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                                   uint32_t layout_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 && old_mt->surf.size > 0) {
  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    } else if (old_mt) {
  72       old_width = old_mt->logical_width0;
  73       old_height = old_mt->logical_height0;
  74       old_depth = old_mt->logical_depth0;
  75    }
  76
  77    DBG("%s\n", __func__);
  78
  79    /* Figure out image dimensions at start level. */
  80    switch(intelObj->base.Target) {
  81    case GL_TEXTURE_2D_MULTISAMPLE:
  82    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
  83    case GL_TEXTURE_RECTANGLE:
  84    case GL_TEXTURE_EXTERNAL_OES:
  85       assert(level == 0);
  86       break;
  87    case GL_TEXTURE_3D:
  88       depth = old_mt ? get_base_dim(old_depth, depth, level) :
  89                        depth << level;
  90       /* Fall through */
  91    case GL_TEXTURE_2D:
  92    case GL_TEXTURE_2D_ARRAY:
  93    case GL_TEXTURE_CUBE_MAP:
  94    case GL_TEXTURE_CUBE_MAP_ARRAY:
  95       height = old_mt ? get_base_dim(old_height, height, level) :
  96                         height << level;
  97       /* Fall through */
  98    case GL_TEXTURE_1D:
  99    case GL_TEXTURE_1D_ARRAY:
 100       width = old_mt ? get_base_dim(old_width, width, level) :
 101                        width << level;
 102       break;
 103    default:
 104       unreachable("Unexpected target");
 105    }
 106
 107    /* Guess a reasonable value for lastLevel.  This is probably going
 108     * to be wrong fairly often and might mean that we have to look at
 109     * resizable buffers, or require that buffers implement lazy
 110     * pagetable arrangements.
 111     */
 112    if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
 113         intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
 114        intelImage->base.Base.Level == 0 &&
 115        !intelObj->base.GenerateMipmap) {
 116       lastLevel = 0;
 117    } else {
 118       lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target,
 119                                                width, height, depth) - 1;
 120    }
 121
 122    return intel_miptree_create(brw,
 123                                intelObj->base.Target,
 124                                intelImage->base.Base.TexFormat,
 125                                0,
 126                                lastLevel,
 127                                width,
 128                                height,
 129                                depth,
 130                                MAX2(intelImage->base.Base.NumSamples, 1),
 131                                layout_flags | MIPTREE_LAYOUT_TILING_ANY);
 132 }
 133
 134 static void
 135 intelTexImage(struct gl_context * ctx,
 136               GLuint dims,
 137               struct gl_texture_image *texImage,
 138               GLenum format, GLenum type, const void *pixels,
 139               const struct gl_pixelstore_attrib *unpack)
 140 {
 141    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 142    bool ok;
 143
 144    bool tex_busy = intelImage->mt && brw_bo_busy(intelImage->mt->bo);
 145
 146    DBG("%s mesa_format %s target %s format %s type %s level %d %dx%dx%d\n",
 147        __func__, _mesa_get_format_name(texImage->TexFormat),
 148        _mesa_enum_to_string(texImage->TexObject->Target),
 149        _mesa_enum_to_string(format), _mesa_enum_to_string(type),
 150        texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
 151
 152    /* Allocate storage for texture data. */
 153    if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage)) {
 154       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
 155       return;
 156    }
 157
 158    assert(intelImage->mt);
 159
 160    if (intelImage->mt->format == MESA_FORMAT_S_UINT8)
 161       intelImage->mt->r8stencil_needs_update = true;
 162
 163    ok = _mesa_meta_pbo_TexSubImage(ctx, dims, texImage, 0, 0, 0,
 164                                    texImage->Width, texImage->Height,
 165                                    texImage->Depth,
 166                                    format, type, pixels,
 167                                    tex_busy, unpack);
 168    if (ok)
 169       return;
 170
 171    ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
 172                                        0, 0, 0, /*x,y,z offsets*/
 173                                        texImage->Width,
 174                                        texImage->Height,
 175                                        texImage->Depth,
 176                                        format, type, pixels, unpack,
 177                                        false /*allocate_storage*/);
 178    if (ok)
 179       return;
 180
 181    DBG("%s: upload image %dx%dx%d pixels %p\n",
 182        __func__, texImage->Width, texImage->Height, texImage->Depth,
 183        pixels);
 184
 185    _mesa_store_teximage(ctx, dims, texImage,
 186                         format, type, pixels, unpack);
 187 }
 188
 189
 190 static void
 191 intel_set_texture_image_mt(struct brw_context *brw,
 192                            struct gl_texture_image *image,
 193                            GLenum internal_format,
 194                            struct intel_mipmap_tree *mt)
 195
 196 {
 197    struct gl_texture_object *texobj = image->TexObject;
 198    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 199    struct intel_texture_image *intel_image = intel_texture_image(image);
 200
 201    _mesa_init_teximage_fields(&brw->ctx, image,
 202                               mt->logical_width0, mt->logical_height0, 1,
 203                               0, internal_format, mt->format);
 204
 205    brw->ctx.Driver.FreeTextureImageBuffer(&brw->ctx, image);
 206
 207    intel_texobj->needs_validate = true;
 208    intel_image->base.RowStride = mt->pitch / mt->cpp;
 209    assert(mt->pitch % mt->cpp == 0);
 210
 211    intel_miptree_reference(&intel_image->mt, mt);
 212
 213    /* Immediately validate the image to the object. */
 214    intel_miptree_reference(&intel_texobj->mt, mt);
 215 }
 216
 217
 218 void
 219 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 220                    GLint texture_format,
 221                    __DRIdrawable *dPriv)
 222 {
 223    struct gl_framebuffer *fb = dPriv->driverPrivate;
 224    struct brw_context *brw = pDRICtx->driverPrivate;
 225    struct gl_context *ctx = &brw->ctx;
 226    struct intel_renderbuffer *rb;
 227    struct gl_texture_object *texObj;
 228    struct gl_texture_image *texImage;
 229    mesa_format texFormat = MESA_FORMAT_NONE;
 230    struct intel_mipmap_tree *mt;
 231    GLenum internal_format = 0;
 232
 233    texObj = _mesa_get_current_tex_object(ctx, target);
 234
 235    if (!texObj)
 236       return;
 237
 238    if (dPriv->lastStamp != dPriv->dri2.stamp ||
 239        !pDRICtx->driScreenPriv->dri2.useInvalidate)
 240       intel_update_renderbuffers(pDRICtx, dPriv);
 241
 242    rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 243    /* If the miptree isn't set, then intel_update_renderbuffers was unable
 244     * to get the BO for the drawable from the window system.
 245     */
 246    if (!rb || !rb->mt)
 247       return;
 248
 249    if (rb->mt->cpp == 4) {
 250       if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
 251          internal_format = GL_RGB;
 252          texFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 253       }
 254       else {
 255          internal_format = GL_RGBA;
 256          texFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 257       }
 258    } else if (rb->mt->cpp == 2) {
 259       internal_format = GL_RGB;
 260       texFormat = MESA_FORMAT_B5G6R5_UNORM;
 261    }
 262
 263    intel_miptree_make_shareable(brw, rb->mt);
 264    mt = intel_miptree_create_for_bo(brw, rb->mt->bo, texFormat, 0,
 265                                     rb->Base.Base.Width,
 266                                     rb->Base.Base.Height,
 267                                     1, rb->mt->pitch, 0);
 268    if (mt == NULL)
 269        return;
 270    mt->target = target;
 271
 272    _mesa_lock_texture(&brw->ctx, texObj);
 273    texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
 274    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 275    intel_miptree_release(&mt);
 276    _mesa_unlock_texture(&brw->ctx, texObj);
 277 }
 278
 279 static GLboolean
 280 intel_bind_renderbuffer_tex_image(struct gl_context *ctx,
 281                                   struct gl_renderbuffer *rb,
 282                                   struct gl_texture_image *image)
 283 {
 284    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
 285    struct intel_texture_image *intel_image = intel_texture_image(image);
 286    struct gl_texture_object *texobj = image->TexObject;
 287    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 288
 289    /* We can only handle RB allocated with AllocRenderbufferStorage, or
 290     * window-system renderbuffers.
 291     */
 292    assert(!rb->TexImage);
 293
 294    if (!irb->mt)
 295       return false;
 296
 297    _mesa_lock_texture(ctx, texobj);
 298    _mesa_init_teximage_fields(ctx, image,
 299                               rb->Width, rb->Height, 1,
 300                               0, rb->InternalFormat, rb->Format);
 301    image->NumSamples = rb->NumSamples;
 302
 303    intel_miptree_reference(&intel_image->mt, irb->mt);
 304
 305    /* Immediately validate the image to the object. */
 306    intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 307
 308    intel_texobj->needs_validate = true;
 309    _mesa_unlock_texture(ctx, texobj);
 310
 311    return true;
 312 }
 313
 314 void
 315 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 316 {
 317    /* The old interface didn't have the format argument, so copy our
 318     * implementation's behavior at the time.
 319     */
 320    intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 321 }
 322
 323 static void
 324 intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
 325                               struct gl_texture_object *texObj,
 326                               struct gl_texture_image *texImage,
 327                               GLeglImageOES image_handle)
 328 {
 329    struct brw_context *brw = brw_context(ctx);
 330    struct intel_mipmap_tree *mt;
 331    __DRIscreen *dri_screen = brw->screen->driScrnPriv;
 332    __DRIimage *image;
 333
 334    image = dri_screen->dri2.image->lookupEGLImage(dri_screen, image_handle,
 335                                                   dri_screen->loaderPrivate);
 336    if (image == NULL)
 337       return;
 338
 339    /* We support external textures only for EGLImages created with
 340     * EGL_EXT_image_dma_buf_import. We may lift that restriction in the future.
 341     */
 342    if (target == GL_TEXTURE_EXTERNAL_OES && !image->dma_buf_imported) {
 343       _mesa_error(ctx, GL_INVALID_OPERATION,
 344             "glEGLImageTargetTexture2DOES(external target is enabled only "
 345                "for images created with EGL_EXT_image_dma_buf_import");
 346       return;
 347    }
 348
 349    /* Disallow depth/stencil textures: we don't have a way to pass the
 350     * separate stencil miptree of a GL_DEPTH_STENCIL texture through.
 351     */
 352    if (image->has_depthstencil) {
 353       _mesa_error(ctx, GL_INVALID_OPERATION, __func__);
 354       return;
 355    }
 356
 357    mt = intel_miptree_create_for_dri_image(brw, image, target,
 358                                            ISL_COLORSPACE_NONE, false);
 359    if (mt == NULL)
 360       return;
 361
 362    struct intel_texture_object *intel_texobj = intel_texture_object(texObj);
 363    intel_texobj->planar_format = image->planar_format;
 364
 365    const GLenum internal_format =
 366       image->internal_format != 0 ?
 367       image->internal_format : _mesa_get_format_base_format(mt->format);
 368    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 369    intel_miptree_release(&mt);
 370 }
 371
 372 /**
 373  * \brief A fast path for glGetTexImage.
 374  *
 375  * \see intel_readpixels_tiled_memcpy()
 376  */
 377 bool
 378 intel_gettexsubimage_tiled_memcpy(struct gl_context *ctx,
 379                                   struct gl_texture_image *texImage,
 380                                   GLint xoffset, GLint yoffset,
 381                                   GLsizei width, GLsizei height,
 382                                   GLenum format, GLenum type,
 383                                   GLvoid *pixels,
 384                                   const struct gl_pixelstore_attrib *packing)
 385 {
 386    struct brw_context *brw = brw_context(ctx);
 387    struct intel_texture_image *image = intel_texture_image(texImage);
 388    int dst_pitch;
 389
 390    /* The miptree's buffer. */
 391    struct brw_bo *bo;
 392
 393    uint32_t cpp;
 394    mem_copy_fn mem_copy = NULL;
 395
 396    /* This fastpath is restricted to specific texture types:
 397     * a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
 398     * more types.
 399     *
 400     * FINISHME: The restrictions below on packing alignment and packing row
 401     * length are likely unneeded now because we calculate the destination stride
 402     * with _mesa_image_row_stride. However, before removing the restrictions
 403     * we need tests.
 404     */
 405    if (!brw->has_llc ||
 406        !(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
 407        !(texImage->TexObject->Target == GL_TEXTURE_2D ||
 408          texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
 409        pixels == NULL ||
 410        _mesa_is_bufferobj(packing->BufferObj) ||
 411        packing->Alignment > 4 ||
 412        packing->SkipPixels > 0 ||
 413        packing->SkipRows > 0 ||
 414        (packing->RowLength != 0 && packing->RowLength != width) ||
 415        packing->SwapBytes ||
 416        packing->LsbFirst ||
 417        packing->Invert)
 418       return false;
 419
 420    /* We can't handle copying from RGBX or BGRX because the tiled_memcpy
 421     * function doesn't set the last channel to 1. Note this checks BaseFormat
 422     * rather than TexFormat in case the RGBX format is being simulated with an
 423     * RGBA format.
 424     */
 425    if (texImage->_BaseFormat == GL_RGB)
 426       return false;
 427
 428    if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp))
 429       return false;
 430
 431    /* If this is a nontrivial texture view, let another path handle it instead. */
 432    if (texImage->TexObject->MinLayer)
 433       return false;
 434
 435    if (!image->mt ||
 436        (image->mt->tiling != I915_TILING_X &&
 437        image->mt->tiling != I915_TILING_Y)) {
 438       /* The algorithm is written only for X- or Y-tiled memory. */
 439       return false;
 440    }
 441
 442    /* tiled_to_linear() assumes that if the object is swizzled, it is using
 443     * I915_BIT6_SWIZZLE_9_10 for X and I915_BIT6_SWIZZLE_9 for Y.  This is only
 444     * true on gen5 and above.
 445     *
 446     * The killer on top is that some gen4 have an L-shaped swizzle mode, where
 447     * parts of the memory aren't swizzled at all. Userspace just can't handle
 448     * that.
 449     */
 450    if (brw->gen < 5 && brw->has_swizzling)
 451       return false;
 452
 453    int level = texImage->Level + texImage->TexObject->MinLevel;
 454
 455    /* Since we are going to write raw data to the miptree, we need to resolve
 456     * any pending fast color clears before we start.
 457     */
 458    assert(image->mt->logical_depth0 == 1);
 459    intel_miptree_access_raw(brw, image->mt, level, 0, true);
 460
 461    bo = image->mt->bo;
 462
 463    if (brw_batch_references(&brw->batch, bo)) {
 464       perf_debug("Flushing before mapping a referenced bo.\n");
 465       intel_batchbuffer_flush(brw);
 466    }
 467
 468    void *map = brw_bo_map(brw, bo, MAP_READ | MAP_RAW);
 469    if (map == NULL) {
 470       DBG("%s: failed to map bo\n", __func__);
 471       return false;
 472    }
 473
 474    dst_pitch = _mesa_image_row_stride(packing, width, format, type);
 475
 476    DBG("%s: level=%d x,y=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
 477        "mesa_format=0x%x tiling=%d "
 478        "packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d)\n",
 479        __func__, texImage->Level, xoffset, yoffset, width, height,
 480        format, type, texImage->TexFormat, image->mt->tiling,
 481        packing->Alignment, packing->RowLength, packing->SkipPixels,
 482        packing->SkipRows);
 483
 484    /* Adjust x and y offset based on miplevel */
 485    unsigned level_x, level_y;
 486    intel_miptree_get_image_offset(image->mt, level, 0, &level_x, &level_y);
 487    xoffset += level_x;
 488    yoffset += level_y;
 489
 490    tiled_to_linear(
 491       xoffset * cpp, (xoffset + width) * cpp,
 492       yoffset, yoffset + height,
 493       pixels - (ptrdiff_t) yoffset * dst_pitch - (ptrdiff_t) xoffset * cpp,
 494       map,
 495       dst_pitch, image->mt->pitch,
 496       brw->has_swizzling,
 497       image->mt->tiling,
 498       mem_copy
 499    );
 500
 501    brw_bo_unmap(bo);
 502    return true;
 503 }
 504
 505 static void
 506 intel_get_tex_sub_image(struct gl_context *ctx,
 507                         GLint xoffset, GLint yoffset, GLint zoffset,
 508                         GLsizei width, GLsizei height, GLint depth,
 509                         GLenum format, GLenum type, GLvoid *pixels,
 510                         struct gl_texture_image *texImage)
 511 {
 512    struct brw_context *brw = brw_context(ctx);
 513    bool ok;
 514
 515    DBG("%s\n", __func__);
 516
 517    if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
 518       if (_mesa_meta_pbo_GetTexSubImage(ctx, 3, texImage,
 519                                         xoffset, yoffset, zoffset,
 520                                         width, height, depth, format, type,
 521                                         pixels, &ctx->Pack)) {
 522          /* Flush to guarantee coherency between the render cache and other
 523           * caches the PBO could potentially be bound to after this point.
 524           * See the related comment in intelReadPixels() for a more detailed
 525           * explanation.
 526           */
 527          brw_emit_mi_flush(brw);
 528          return;
 529       }
 530
 531       perf_debug("%s: fallback to CPU mapping in PBO case\n", __func__);
 532    }
 533
 534    ok = intel_gettexsubimage_tiled_memcpy(ctx, texImage, xoffset, yoffset,
 535                                           width, height,
 536                                           format, type, pixels, &ctx->Pack);
 537
 538    if(ok)
 539       return;
 540
 541    _mesa_meta_GetTexSubImage(ctx, xoffset, yoffset, zoffset,
 542                              width, height, depth,
 543                              format, type, pixels, texImage);
 544
 545    DBG("%s - DONE\n", __func__);
 546 }
 547
 548 static void
 549 flush_astc_denorms(struct gl_context *ctx, GLuint dims,
 550                    struct gl_texture_image *texImage,
 551                    GLint xoffset, GLint yoffset, GLint zoffset,
 552                    GLsizei width, GLsizei height, GLsizei depth)
 553 {
 554    struct compressed_pixelstore store;
 555    _mesa_compute_compressed_pixelstore(dims, texImage->TexFormat,
 556                                        width, height, depth,
 557                                        &ctx->Unpack, &store);
 558
 559    for (int slice = 0; slice < store.CopySlices; slice++) {
 560
 561       /* Map dest texture buffer */
 562       GLubyte *dstMap;
 563       GLint dstRowStride;
 564       ctx->Driver.MapTextureImage(ctx, texImage, slice + zoffset,
 565                                   xoffset, yoffset, width, height,
 566                                   GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
 567                                   &dstMap, &dstRowStride);
 568       if (!dstMap)
 569          continue;
 570
 571       for (int i = 0; i < store.CopyRowsPerSlice; i++) {
 572
 573          /* An ASTC block is stored in little endian mode. The byte that
 574           * contains bits 0..7 is stored at the lower address in memory.
 575           */
 576          struct astc_void_extent {
 577             uint16_t header : 12;
 578             uint16_t dontcare[3];
 579             uint16_t R;
 580             uint16_t G;
 581             uint16_t B;
 582             uint16_t A;
 583          } *blocks = (struct astc_void_extent*) dstMap;
 584
 585          /* Iterate over every copied block in the row */
 586          for (int j = 0; j < store.CopyBytesPerRow / 16; j++) {
 587
 588             /* Check if the header matches that of an LDR void-extent block */
 589             if (blocks[j].header == 0xDFC) {
 590
 591                /* Flush UNORM16 values that would be denormalized */
 592                if (blocks[j].A < 4) blocks[j].A = 0;
 593                if (blocks[j].B < 4) blocks[j].B = 0;
 594                if (blocks[j].G < 4) blocks[j].G = 0;
 595                if (blocks[j].R < 4) blocks[j].R = 0;
 596             }
 597          }
 598
 599          dstMap += dstRowStride;
 600       }
 601
 602       ctx->Driver.UnmapTextureImage(ctx, texImage, slice + zoffset);
 603    }
 604 }
 605
 606
 607 static void
 608 intelCompressedTexSubImage(struct gl_context *ctx, GLuint dims,
 609                         struct gl_texture_image *texImage,
 610                         GLint xoffset, GLint yoffset, GLint zoffset,
 611                         GLsizei width, GLsizei height, GLsizei depth,
 612                         GLenum format,
 613                         GLsizei imageSize, const GLvoid *data)
 614 {
 615    /* Upload the compressed data blocks */
 616    _mesa_store_compressed_texsubimage(ctx, dims, texImage,
 617                                       xoffset, yoffset, zoffset,
 618                                       width, height, depth,
 619                                       format, imageSize, data);
 620
 621    /* Fix up copied ASTC blocks if necessary */
 622    GLenum gl_format = _mesa_compressed_format_to_glenum(ctx,
 623                                                         texImage->TexFormat);
 624    bool is_linear_astc = _mesa_is_astc_format(gl_format) &&
 625                         !_mesa_is_srgb_format(gl_format);
 626    struct brw_context *brw = (struct brw_context*) ctx;
 627    if (brw->gen == 9 && is_linear_astc)
 628       flush_astc_denorms(ctx, dims, texImage,
 629                          xoffset, yoffset, zoffset,
 630                          width, height, depth);
 631 }
 632
 633 void
 634 intelInitTextureImageFuncs(struct dd_function_table *functions)
 635 {
 636    functions->TexImage = intelTexImage;
 637    functions->CompressedTexSubImage = intelCompressedTexSubImage;
 638    functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
 639    functions->BindRenderbufferTexImage = intel_bind_renderbuffer_tex_image;
 640    functions->GetTexSubImage = intel_get_tex_sub_image;
 641 }