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

   1
   2 #include "main/macros.h"
   3 #include "main/mtypes.h"
   4 #include "main/enums.h"
   5 #include "main/bufferobj.h"
   6 #include "main/context.h"
   7 #include "main/formats.h"
   8 #include "main/glformats.h"
   9 #include "main/image.h"
  10 #include "main/pbo.h"
  11 #include "main/renderbuffer.h"
  12 #include "main/texcompress.h"
  13 #include "main/texgetimage.h"
  14 #include "main/texobj.h"
  15 #include "main/teximage.h"
  16 #include "main/texstore.h"
  17
  18 #include "drivers/common/meta.h"
  19
  20 #include "intel_mipmap_tree.h"
  21 #include "intel_buffer_objects.h"
  22 #include "intel_batchbuffer.h"
  23 #include "intel_tex.h"
  24 #include "intel_blit.h"
  25 #include "intel_fbo.h"
  26 #include "intel_image.h"
  27 #include "intel_tiled_memcpy.h"
  28 #include "brw_context.h"
  29
  30 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  31
  32 /* Make sure one doesn't end up shrinking base level zero unnecessarily.
  33  * Determining the base level dimension by shifting higher level dimension
  34  * ends up in off-by-one value in case base level has NPOT size (for example,
  35  * 293 != 146 << 1).
  36  * Choose the original base level dimension when shifted dimensions agree.
  37  * Otherwise assume real resize is intended and use the new shifted value.
  38  */
  39 static unsigned
  40 get_base_dim(unsigned old_base_dim, unsigned new_level_dim, unsigned level)
  41 {
  42    const unsigned old_level_dim = old_base_dim >> level;
  43    const unsigned new_base_dim = new_level_dim << level;
  44
  45    return old_level_dim == new_level_dim ? old_base_dim : new_base_dim;
  46 }
  47
  48 /* Work back from the specified level of the image to the baselevel and create a
  49  * miptree of that size.
  50  */
  51 struct intel_mipmap_tree *
  52 intel_miptree_create_for_teximage(struct brw_context *brw,
  53                                   struct intel_texture_object *intelObj,
  54                                   struct intel_texture_image *intelImage,
  55                                   enum intel_miptree_create_flags flags)
  56 {
  57    GLuint lastLevel;
  58    int width, height, depth;
  59    unsigned old_width = 0, old_height = 0, old_depth = 0;
  60    const struct intel_mipmap_tree *old_mt = intelObj->mt;
  61    const unsigned level = intelImage->base.Base.Level;
  62
  63    intel_get_image_dims(&intelImage->base.Base, &width, &height, &depth);
  64
  65    if (old_mt) {
  66       old_width = old_mt->surf.logical_level0_px.width;
  67       old_height = old_mt->surf.logical_level0_px.height;
  68       old_depth = old_mt->surf.dim == ISL_SURF_DIM_3D ?
  69                      old_mt->surf.logical_level0_px.depth :
  70                      old_mt->surf.logical_level0_px.array_len;
  71    }
  72
  73    DBG("%s\n", __func__);
  74
  75    /* Figure out image dimensions at start level. */
  76    switch(intelObj->base.Target) {
  77    case GL_TEXTURE_2D_MULTISAMPLE:
  78    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
  79    case GL_TEXTURE_RECTANGLE:
  80    case GL_TEXTURE_EXTERNAL_OES:
  81       assert(level == 0);
  82       break;
  83    case GL_TEXTURE_3D:
  84       depth = old_mt ? get_base_dim(old_depth, depth, level) :
  85                        depth << level;
  86       /* Fall through */
  87    case GL_TEXTURE_2D:
  88    case GL_TEXTURE_2D_ARRAY:
  89    case GL_TEXTURE_CUBE_MAP:
  90    case GL_TEXTURE_CUBE_MAP_ARRAY:
  91       height = old_mt ? get_base_dim(old_height, height, level) :
  92                         height << level;
  93       /* Fall through */
  94    case GL_TEXTURE_1D:
  95    case GL_TEXTURE_1D_ARRAY:
  96       width = old_mt ? get_base_dim(old_width, width, level) :
  97                        width << level;
  98       break;
  99    default:
 100       unreachable("Unexpected target");
 101    }
 102
 103    /* Guess a reasonable value for lastLevel.  This is probably going
 104     * to be wrong fairly often and might mean that we have to look at
 105     * resizable buffers, or require that buffers implement lazy
 106     * pagetable arrangements.
 107     */
 108    if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
 109         intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
 110        intelImage->base.Base.Level == 0 &&
 111        !intelObj->base.GenerateMipmap) {
 112       lastLevel = 0;
 113    } else {
 114       lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target,
 115                                                width, height, depth) - 1;
 116    }
 117
 118    return intel_miptree_create(brw,
 119                                intelObj->base.Target,
 120                                intelImage->base.Base.TexFormat,
 121                                0,
 122                                lastLevel,
 123                                width,
 124                                height,
 125                                depth,
 126                                MAX2(intelImage->base.Base.NumSamples, 1),
 127                                flags);
 128 }
 129
 130 static void
 131 intelTexImage(struct gl_context * ctx,
 132               GLuint dims,
 133               struct gl_texture_image *texImage,
 134               GLenum format, GLenum type, const void *pixels,
 135               const struct gl_pixelstore_attrib *unpack)
 136 {
 137    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 138    bool ok;
 139
 140    bool tex_busy = intelImage->mt && brw_bo_busy(intelImage->mt->bo);
 141
 142    DBG("%s mesa_format %s target %s format %s type %s level %d %dx%dx%d\n",
 143        __func__, _mesa_get_format_name(texImage->TexFormat),
 144        _mesa_enum_to_string(texImage->TexObject->Target),
 145        _mesa_enum_to_string(format), _mesa_enum_to_string(type),
 146        texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
 147
 148    /* Allocate storage for texture data. */
 149    if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage)) {
 150       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
 151       return;
 152    }
 153
 154    assert(intelImage->mt);
 155
 156    if (intelImage->mt->format == MESA_FORMAT_S_UINT8)
 157       intelImage->mt->r8stencil_needs_update = true;
 158
 159    ok = _mesa_meta_pbo_TexSubImage(ctx, dims, texImage, 0, 0, 0,
 160                                    texImage->Width, texImage->Height,
 161                                    texImage->Depth,
 162                                    format, type, pixels,
 163                                    tex_busy, unpack);
 164    if (ok)
 165       return;
 166
 167    ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
 168                                        0, 0, 0, /*x,y,z offsets*/
 169                                        texImage->Width,
 170                                        texImage->Height,
 171                                        texImage->Depth,
 172                                        format, type, pixels, unpack,
 173                                        false /*allocate_storage*/);
 174    if (ok)
 175       return;
 176
 177    DBG("%s: upload image %dx%dx%d pixels %p\n",
 178        __func__, texImage->Width, texImage->Height, texImage->Depth,
 179        pixels);
 180
 181    _mesa_store_teximage(ctx, dims, texImage,
 182                         format, type, pixels, unpack);
 183 }
 184
 185
 186 static void
 187 intel_set_texture_image_mt(struct brw_context *brw,
 188                            struct gl_texture_image *image,
 189                            GLenum internal_format,
 190                            struct intel_mipmap_tree *mt)
 191
 192 {
 193    struct gl_texture_object *texobj = image->TexObject;
 194    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 195    struct intel_texture_image *intel_image = intel_texture_image(image);
 196
 197    _mesa_init_teximage_fields(&brw->ctx, image,
 198                               mt->surf.logical_level0_px.width,
 199                               mt->surf.logical_level0_px.height, 1,
 200                               0, internal_format, mt->format);
 201
 202    brw->ctx.Driver.FreeTextureImageBuffer(&brw->ctx, image);
 203
 204    intel_texobj->needs_validate = true;
 205    intel_image->base.RowStride = mt->surf.row_pitch / mt->cpp;
 206    assert(mt->surf.row_pitch % mt->cpp == 0);
 207
 208    intel_miptree_reference(&intel_image->mt, mt);
 209
 210    /* Immediately validate the image to the object. */
 211    intel_miptree_reference(&intel_texobj->mt, mt);
 212 }
 213
 214
 215 void
 216 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 217                    GLint texture_format,
 218                    __DRIdrawable *dPriv)
 219 {
 220    struct gl_framebuffer *fb = dPriv->driverPrivate;
 221    struct brw_context *brw = pDRICtx->driverPrivate;
 222    struct gl_context *ctx = &brw->ctx;
 223    struct intel_renderbuffer *rb;
 224    struct gl_texture_object *texObj;
 225    struct gl_texture_image *texImage;
 226    mesa_format texFormat = MESA_FORMAT_NONE;
 227    struct intel_mipmap_tree *mt;
 228    GLenum internal_format = 0;
 229
 230    texObj = _mesa_get_current_tex_object(ctx, target);
 231
 232    if (!texObj)
 233       return;
 234
 235    if (dPriv->lastStamp != dPriv->dri2.stamp ||
 236        !pDRICtx->driScreenPriv->dri2.useInvalidate)
 237       intel_update_renderbuffers(pDRICtx, dPriv);
 238
 239    rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 240    /* If the miptree isn't set, then intel_update_renderbuffers was unable
 241     * to get the BO for the drawable from the window system.
 242     */
 243    if (!rb || !rb->mt)
 244       return;
 245
 246    if (rb->mt->cpp == 4) {
 247       if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
 248          internal_format = GL_RGB;
 249          texFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 250       }
 251       else {
 252          internal_format = GL_RGBA;
 253          texFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 254       }
 255    } else if (rb->mt->cpp == 2) {
 256       internal_format = GL_RGB;
 257       texFormat = MESA_FORMAT_B5G6R5_UNORM;
 258    }
 259
 260    intel_miptree_make_shareable(brw, rb->mt);
 261    mt = intel_miptree_create_for_bo(brw, rb->mt->bo, texFormat, 0,
 262                                     rb->Base.Base.Width,
 263                                     rb->Base.Base.Height,
 264                                     1, rb->mt->surf.row_pitch,
 265                                     MIPTREE_CREATE_DEFAULT);
 266    if (mt == NULL)
 267        return;
 268    mt->target = target;
 269
 270    _mesa_lock_texture(&brw->ctx, texObj);
 271    texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
 272    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 273    intel_miptree_release(&mt);
 274    _mesa_unlock_texture(&brw->ctx, texObj);
 275 }
 276
 277 static GLboolean
 278 intel_bind_renderbuffer_tex_image(struct gl_context *ctx,
 279                                   struct gl_renderbuffer *rb,
 280                                   struct gl_texture_image *image)
 281 {
 282    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
 283    struct intel_texture_image *intel_image = intel_texture_image(image);
 284    struct gl_texture_object *texobj = image->TexObject;
 285    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 286
 287    /* We can only handle RB allocated with AllocRenderbufferStorage, or
 288     * window-system renderbuffers.
 289     */
 290    assert(!rb->TexImage);
 291
 292    if (!irb->mt)
 293       return false;
 294
 295    _mesa_lock_texture(ctx, texobj);
 296    _mesa_init_teximage_fields(ctx, image,
 297                               rb->Width, rb->Height, 1,
 298                               0, rb->InternalFormat, rb->Format);
 299    image->NumSamples = rb->NumSamples;
 300
 301    intel_miptree_reference(&intel_image->mt, irb->mt);
 302
 303    /* Immediately validate the image to the object. */
 304    intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 305
 306    intel_texobj->needs_validate = true;
 307    _mesa_unlock_texture(ctx, texobj);
 308
 309    return true;
 310 }
 311
 312 void
 313 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 314 {
 315    /* The old interface didn't have the format argument, so copy our
 316     * implementation's behavior at the time.
 317     */
 318    intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 319 }
 320
 321 static void
 322 intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
 323                               struct gl_texture_object *texObj,
 324                               struct gl_texture_image *texImage,
 325                               GLeglImageOES image_handle)
 326 {
 327    struct brw_context *brw = brw_context(ctx);
 328    struct intel_mipmap_tree *mt;
 329    __DRIscreen *dri_screen = brw->screen->driScrnPriv;
 330    __DRIimage *image;
 331
 332    image = dri_screen->dri2.image->lookupEGLImage(dri_screen, image_handle,
 333                                                   dri_screen->loaderPrivate);
 334    if (image == NULL)
 335       return;
 336
 337    /* We support external textures only for EGLImages created with
 338     * EGL_EXT_image_dma_buf_import. We may lift that restriction in the future.
 339     */
 340    if (target == GL_TEXTURE_EXTERNAL_OES && !image->dma_buf_imported) {
 341       _mesa_error(ctx, GL_INVALID_OPERATION,
 342             "glEGLImageTargetTexture2DOES(external target is enabled only "
 343                "for images created with EGL_EXT_image_dma_buf_import");
 344       return;
 345    }
 346
 347    /* Disallow depth/stencil textures: we don't have a way to pass the
 348     * separate stencil miptree of a GL_DEPTH_STENCIL texture through.
 349     */
 350    if (image->has_depthstencil) {
 351       _mesa_error(ctx, GL_INVALID_OPERATION, __func__);
 352       return;
 353    }
 354
 355    mt = intel_miptree_create_for_dri_image(brw, image, target,
 356                                            ISL_COLORSPACE_NONE, false);
 357    if (mt == NULL)
 358       return;
 359
 360    struct intel_texture_object *intel_texobj = intel_texture_object(texObj);
 361    intel_texobj->planar_format = image->planar_format;
 362
 363    const GLenum internal_format =
 364       image->internal_format != 0 ?
 365       image->internal_format : _mesa_get_format_base_format(mt->format);
 366    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 367    intel_miptree_release(&mt);
 368 }
 369
 370 /**
 371  * \brief A fast path for glGetTexImage.
 372  *
 373  * \see intel_readpixels_tiled_memcpy()
 374  */
 375 bool
 376 intel_gettexsubimage_tiled_memcpy(struct gl_context *ctx,
 377                                   struct gl_texture_image *texImage,
 378                                   GLint xoffset, GLint yoffset,
 379                                   GLsizei width, GLsizei height,
 380                                   GLenum format, GLenum type,
 381                                   GLvoid *pixels,
 382                                   const struct gl_pixelstore_attrib *packing)
 383 {
 384    struct brw_context *brw = brw_context(ctx);
 385    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 386    struct intel_texture_image *image = intel_texture_image(texImage);
 387    int dst_pitch;
 388
 389    /* The miptree's buffer. */
 390    struct brw_bo *bo;
 391
 392    uint32_t cpp;
 393    mem_copy_fn mem_copy = NULL;
 394
 395    /* This fastpath is restricted to specific texture types:
 396     * a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
 397     * more types.
 398     *
 399     * FINISHME: The restrictions below on packing alignment and packing row
 400     * length are likely unneeded now because we calculate the destination stride
 401     * with _mesa_image_row_stride. However, before removing the restrictions
 402     * we need tests.
 403     */
 404    if (!devinfo->has_llc ||
 405        !(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
 406        !(texImage->TexObject->Target == GL_TEXTURE_2D ||
 407          texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
 408        pixels == NULL ||
 409        _mesa_is_bufferobj(packing->BufferObj) ||
 410        packing->Alignment > 4 ||
 411        packing->SkipPixels > 0 ||
 412        packing->SkipRows > 0 ||
 413        (packing->RowLength != 0 && packing->RowLength != width) ||
 414        packing->SwapBytes ||
 415        packing->LsbFirst ||
 416        packing->Invert)
 417       return false;
 418
 419    /* We can't handle copying from RGBX or BGRX because the tiled_memcpy
 420     * function doesn't set the last channel to 1. Note this checks BaseFormat
 421     * rather than TexFormat in case the RGBX format is being simulated with an
 422     * RGBA format.
 423     */
 424    if (texImage->_BaseFormat == GL_RGB)
 425       return false;
 426
 427    if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp))
 428       return false;
 429
 430    /* If this is a nontrivial texture view, let another path handle it instead. */
 431    if (texImage->TexObject->MinLayer)
 432       return false;
 433
 434    if (!image->mt ||
 435        (image->mt->surf.tiling != ISL_TILING_X &&
 436         image->mt->surf.tiling != ISL_TILING_Y0)) {
 437       /* The algorithm is written only for X- or Y-tiled memory. */
 438       return false;
 439    }
 440
 441    /* tiled_to_linear() assumes that if the object is swizzled, it is using
 442     * I915_BIT6_SWIZZLE_9_10 for X and I915_BIT6_SWIZZLE_9 for Y.  This is only
 443     * true on gen5 and above.
 444     *
 445     * The killer on top is that some gen4 have an L-shaped swizzle mode, where
 446     * parts of the memory aren't swizzled at all. Userspace just can't handle
 447     * that.
 448     */
 449    if (devinfo->gen < 5 && brw->has_swizzling)
 450       return false;
 451
 452    int level = texImage->Level + texImage->TexObject->MinLevel;
 453
 454    /* Since we are going to write raw data to the miptree, we need to resolve
 455     * any pending fast color clears before we start.
 456     */
 457    assert(image->mt->surf.logical_level0_px.depth == 1);
 458    assert(image->mt->surf.logical_level0_px.array_len == 1);
 459
 460    intel_miptree_access_raw(brw, image->mt, level, 0, true);
 461
 462    bo = image->mt->bo;
 463
 464    if (brw_batch_references(&brw->batch, bo)) {
 465       perf_debug("Flushing before mapping a referenced bo.\n");
 466       intel_batchbuffer_flush(brw);
 467    }
 468
 469    void *map = brw_bo_map(brw, bo, MAP_READ | MAP_RAW);
 470    if (map == NULL) {
 471       DBG("%s: failed to map bo\n", __func__);
 472       return false;
 473    }
 474
 475    dst_pitch = _mesa_image_row_stride(packing, width, format, type);
 476
 477    DBG("%s: level=%d x,y=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
 478        "mesa_format=0x%x tiling=%d "
 479        "packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d)\n",
 480        __func__, texImage->Level, xoffset, yoffset, width, height,
 481        format, type, texImage->TexFormat, image->mt->surf.tiling,
 482        packing->Alignment, packing->RowLength, packing->SkipPixels,
 483        packing->SkipRows);
 484
 485    /* Adjust x and y offset based on miplevel */
 486    unsigned level_x, level_y;
 487    intel_miptree_get_image_offset(image->mt, level, 0, &level_x, &level_y);
 488    xoffset += level_x;
 489    yoffset += level_y;
 490
 491    tiled_to_linear(
 492       xoffset * cpp, (xoffset + width) * cpp,
 493       yoffset, yoffset + height,
 494       pixels - (ptrdiff_t) yoffset * dst_pitch - (ptrdiff_t) xoffset * cpp,
 495       map,
 496       dst_pitch, image->mt->surf.row_pitch,
 497       brw->has_swizzling,
 498       image->mt->surf.tiling,
 499       mem_copy
 500    );
 501
 502    brw_bo_unmap(bo);
 503    return true;
 504 }
 505
 506 static void
 507 intel_get_tex_sub_image(struct gl_context *ctx,
 508                         GLint xoffset, GLint yoffset, GLint zoffset,
 509                         GLsizei width, GLsizei height, GLint depth,
 510                         GLenum format, GLenum type, GLvoid *pixels,
 511                         struct gl_texture_image *texImage)
 512 {
 513    struct brw_context *brw = brw_context(ctx);
 514    bool ok;
 515
 516    DBG("%s\n", __func__);
 517
 518    if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
 519       if (_mesa_meta_pbo_GetTexSubImage(ctx, 3, texImage,
 520                                         xoffset, yoffset, zoffset,
 521                                         width, height, depth, format, type,
 522                                         pixels, &ctx->Pack)) {
 523          /* Flush to guarantee coherency between the render cache and other
 524           * caches the PBO could potentially be bound to after this point.
 525           * See the related comment in intelReadPixels() for a more detailed
 526           * explanation.
 527           */
 528          brw_emit_mi_flush(brw);
 529          return;
 530       }
 531
 532       perf_debug("%s: fallback to CPU mapping in PBO case\n", __func__);
 533    }
 534
 535    ok = intel_gettexsubimage_tiled_memcpy(ctx, texImage, xoffset, yoffset,
 536                                           width, height,
 537                                           format, type, pixels, &ctx->Pack);
 538
 539    if(ok)
 540       return;
 541
 542    _mesa_meta_GetTexSubImage(ctx, xoffset, yoffset, zoffset,
 543                              width, height, depth,
 544                              format, type, pixels, texImage);
 545
 546    DBG("%s - DONE\n", __func__);
 547 }
 548
 549 static void
 550 flush_astc_denorms(struct gl_context *ctx, GLuint dims,
 551                    struct gl_texture_image *texImage,
 552                    GLint xoffset, GLint yoffset, GLint zoffset,
 553                    GLsizei width, GLsizei height, GLsizei depth)
 554 {
 555    struct compressed_pixelstore store;
 556    _mesa_compute_compressed_pixelstore(dims, texImage->TexFormat,
 557                                        width, height, depth,
 558                                        &ctx->Unpack, &store);
 559
 560    for (int slice = 0; slice < store.CopySlices; slice++) {
 561
 562       /* Map dest texture buffer */
 563       GLubyte *dstMap;
 564       GLint dstRowStride;
 565       ctx->Driver.MapTextureImage(ctx, texImage, slice + zoffset,
 566                                   xoffset, yoffset, width, height,
 567                                   GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
 568                                   &dstMap, &dstRowStride);
 569       if (!dstMap)
 570          continue;
 571
 572       for (int i = 0; i < store.CopyRowsPerSlice; i++) {
 573
 574          /* An ASTC block is stored in little endian mode. The byte that
 575           * contains bits 0..7 is stored at the lower address in memory.
 576           */
 577          struct astc_void_extent {
 578             uint16_t header : 12;
 579             uint16_t dontcare[3];
 580             uint16_t R;
 581             uint16_t G;
 582             uint16_t B;
 583             uint16_t A;
 584          } *blocks = (struct astc_void_extent*) dstMap;
 585
 586          /* Iterate over every copied block in the row */
 587          for (int j = 0; j < store.CopyBytesPerRow / 16; j++) {
 588
 589             /* Check if the header matches that of an LDR void-extent block */
 590             if (blocks[j].header == 0xDFC) {
 591
 592                /* Flush UNORM16 values that would be denormalized */
 593                if (blocks[j].A < 4) blocks[j].A = 0;
 594                if (blocks[j].B < 4) blocks[j].B = 0;
 595                if (blocks[j].G < 4) blocks[j].G = 0;
 596                if (blocks[j].R < 4) blocks[j].R = 0;
 597             }
 598          }
 599
 600          dstMap += dstRowStride;
 601       }
 602
 603       ctx->Driver.UnmapTextureImage(ctx, texImage, slice + zoffset);
 604    }
 605 }
 606
 607
 608 static void
 609 intelCompressedTexSubImage(struct gl_context *ctx, GLuint dims,
 610                         struct gl_texture_image *texImage,
 611                         GLint xoffset, GLint yoffset, GLint zoffset,
 612                         GLsizei width, GLsizei height, GLsizei depth,
 613                         GLenum format,
 614                         GLsizei imageSize, const GLvoid *data)
 615 {
 616    /* Upload the compressed data blocks */
 617    _mesa_store_compressed_texsubimage(ctx, dims, texImage,
 618                                       xoffset, yoffset, zoffset,
 619                                       width, height, depth,
 620                                       format, imageSize, data);
 621
 622    /* Fix up copied ASTC blocks if necessary */
 623    GLenum gl_format = _mesa_compressed_format_to_glenum(ctx,
 624                                                         texImage->TexFormat);
 625    bool is_linear_astc = _mesa_is_astc_format(gl_format) &&
 626                         !_mesa_is_srgb_format(gl_format);
 627    struct brw_context *brw = (struct brw_context*) ctx;
 628    const struct gen_device_info *devinfo = &brw->screen->devinfo;
 629    if (devinfo->gen == 9 && is_linear_astc)
 630       flush_astc_denorms(ctx, dims, texImage,
 631                          xoffset, yoffset, zoffset,
 632                          width, height, depth);
 633 }
 634
 635 void
 636 intelInitTextureImageFuncs(struct dd_function_table *functions)
 637 {
 638    functions->TexImage = intelTexImage;
 639    functions->CompressedTexSubImage = intelCompressedTexSubImage;
 640    functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
 641    functions->BindRenderbufferTexImage = intel_bind_renderbuffer_tex_image;
 642    functions->GetTexSubImage = intel_get_tex_sub_image;
 643 }