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 /* Work back from the specified level of the image to the baselevel and create a
  33  * miptree of that size.
  34  */
  35 struct intel_mipmap_tree *
  36 intel_miptree_create_for_teximage(struct brw_context *brw,
  37                                   struct intel_texture_object *intelObj,
  38                                   struct intel_texture_image *intelImage,
  39                                   uint32_t layout_flags)
  40 {
  41    GLuint lastLevel;
  42    int width, height, depth;
  43    GLuint i;
  44
  45    intel_get_image_dims(&intelImage->base.Base, &width, &height, &depth);
  46
  47    DBG("%s\n", __func__);
  48
  49    /* Figure out image dimensions at start level. */
  50    for (i = intelImage->base.Base.Level; i > 0; i--) {
  51       width <<= 1;
  52       if (height != 1)
  53          height <<= 1;
  54       if (intelObj->base.Target == GL_TEXTURE_3D)
  55          depth <<= 1;
  56    }
  57
  58    /* Guess a reasonable value for lastLevel.  This is probably going
  59     * to be wrong fairly often and might mean that we have to look at
  60     * resizable buffers, or require that buffers implement lazy
  61     * pagetable arrangements.
  62     */
  63    if ((intelObj->base.Sampler.MinFilter == GL_NEAREST ||
  64         intelObj->base.Sampler.MinFilter == GL_LINEAR) &&
  65        intelImage->base.Base.Level == 0 &&
  66        !intelObj->base.GenerateMipmap) {
  67       lastLevel = 0;
  68    } else {
  69       lastLevel = _mesa_get_tex_max_num_levels(intelObj->base.Target,
  70                                                width, height, depth) - 1;
  71    }
  72
  73    return intel_miptree_create(brw,
  74                                intelObj->base.Target,
  75                                intelImage->base.Base.TexFormat,
  76                                0,
  77                                lastLevel,
  78                                width,
  79                                height,
  80                                depth,
  81                                intelImage->base.Base.NumSamples,
  82                                layout_flags | MIPTREE_LAYOUT_TILING_ANY);
  83 }
  84
  85 static void
  86 intelTexImage(struct gl_context * ctx,
  87               GLuint dims,
  88               struct gl_texture_image *texImage,
  89               GLenum format, GLenum type, const void *pixels,
  90               const struct gl_pixelstore_attrib *unpack)
  91 {
  92    struct intel_texture_image *intelImage = intel_texture_image(texImage);
  93    bool ok;
  94
  95    bool tex_busy = intelImage->mt && drm_intel_bo_busy(intelImage->mt->bo);
  96
  97    DBG("%s mesa_format %s target %s format %s type %s level %d %dx%dx%d\n",
  98        __func__, _mesa_get_format_name(texImage->TexFormat),
  99        _mesa_enum_to_string(texImage->TexObject->Target),
 100        _mesa_enum_to_string(format), _mesa_enum_to_string(type),
 101        texImage->Level, texImage->Width, texImage->Height, texImage->Depth);
 102
 103    /* Allocate storage for texture data. */
 104    if (!ctx->Driver.AllocTextureImageBuffer(ctx, texImage)) {
 105       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage%uD", dims);
 106       return;
 107    }
 108
 109    assert(intelImage->mt);
 110
 111    ok = _mesa_meta_pbo_TexSubImage(ctx, dims, texImage, 0, 0, 0,
 112                                    texImage->Width, texImage->Height,
 113                                    texImage->Depth,
 114                                    format, type, pixels,
 115                                    tex_busy, unpack);
 116    if (ok)
 117       return;
 118
 119    ok = intel_texsubimage_tiled_memcpy(ctx, dims, texImage,
 120                                        0, 0, 0, /*x,y,z offsets*/
 121                                        texImage->Width,
 122                                        texImage->Height,
 123                                        texImage->Depth,
 124                                        format, type, pixels, unpack,
 125                                        false /*allocate_storage*/);
 126    if (ok)
 127       return;
 128
 129    DBG("%s: upload image %dx%dx%d pixels %p\n",
 130        __func__, texImage->Width, texImage->Height, texImage->Depth,
 131        pixels);
 132
 133    _mesa_store_teximage(ctx, dims, texImage,
 134                         format, type, pixels, unpack);
 135 }
 136
 137
 138 static void
 139 intel_set_texture_image_mt(struct brw_context *brw,
 140                            struct gl_texture_image *image,
 141                            GLenum internal_format,
 142                            struct intel_mipmap_tree *mt)
 143
 144 {
 145    struct gl_texture_object *texobj = image->TexObject;
 146    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 147    struct intel_texture_image *intel_image = intel_texture_image(image);
 148
 149    _mesa_init_teximage_fields(&brw->ctx, image,
 150                               mt->logical_width0, mt->logical_height0, 1,
 151                               0, internal_format, mt->format);
 152
 153    brw->ctx.Driver.FreeTextureImageBuffer(&brw->ctx, image);
 154
 155    intel_texobj->needs_validate = true;
 156    intel_image->base.RowStride = mt->pitch / mt->cpp;
 157    assert(mt->pitch % mt->cpp == 0);
 158
 159    intel_miptree_reference(&intel_image->mt, mt);
 160
 161    /* Immediately validate the image to the object. */
 162    intel_miptree_reference(&intel_texobj->mt, mt);
 163 }
 164
 165 static struct intel_mipmap_tree *
 166 create_mt_for_planar_dri_image(struct brw_context *brw,
 167                                GLenum target, __DRIimage *image)
 168 {
 169    struct intel_image_format *f = image->planar_format;
 170    struct intel_mipmap_tree *planar_mt;
 171
 172    for (int i = 0; i < f->nplanes; i++) {
 173       const int index = f->planes[i].buffer_index;
 174       const uint32_t dri_format = f->planes[i].dri_format;
 175       const mesa_format format = driImageFormatToGLFormat(dri_format);
 176       const uint32_t width = image->width >> f->planes[i].width_shift;
 177       const uint32_t height = image->height >> f->planes[i].height_shift;
 178
 179       /* Disable creation of the texture's aux buffers because the driver
 180        * exposes no EGL API to manage them. That is, there is no API for
 181        * resolving the aux buffer's content to the main buffer nor for
 182        * invalidating the aux buffer's content.
 183        */
 184       struct intel_mipmap_tree *mt =
 185          intel_miptree_create_for_bo(brw, image->bo, format,
 186                                      image->offsets[index],
 187                                      width, height, 1,
 188                                      image->strides[index],
 189                                      MIPTREE_LAYOUT_DISABLE_AUX);
 190       if (mt == NULL)
 191          return NULL;
 192
 193       mt->target = target;
 194       mt->total_width = width;
 195       mt->total_height = height;
 196
 197       if (i == 0)
 198          planar_mt = mt;
 199       else
 200          planar_mt->plane[i - 1] = mt;
 201    }
 202
 203    return planar_mt;
 204 }
 205
 206 /**
 207  * Binds a BO to a texture image, as if it was uploaded by glTexImage2D().
 208  *
 209  * Used for GLX_EXT_texture_from_pixmap and EGL image extensions,
 210  */
 211 static struct intel_mipmap_tree *
 212 create_mt_for_dri_image(struct brw_context *brw,
 213                         GLenum target, __DRIimage *image)
 214 {
 215    struct intel_mipmap_tree *mt;
 216    uint32_t draw_x, draw_y;
 217
 218    /* Disable creation of the texture's aux buffers because the driver exposes
 219     * no EGL API to manage them. That is, there is no API for resolving the aux
 220     * buffer's content to the main buffer nor for invalidating the aux buffer's
 221     * content.
 222     */
 223    mt = intel_miptree_create_for_bo(brw, image->bo, image->format,
 224                                     0, image->width, image->height, 1,
 225                                     image->pitch,
 226                                     MIPTREE_LAYOUT_DISABLE_AUX);
 227    if (mt == NULL)
 228       return NULL;
 229
 230    mt->target = target;
 231    mt->total_width = image->width;
 232    mt->total_height = image->height;
 233    mt->level[0].slice[0].x_offset = image->tile_x;
 234    mt->level[0].slice[0].y_offset = image->tile_y;
 235
 236    intel_miptree_get_tile_offsets(mt, 0, 0, &draw_x, &draw_y);
 237
 238    /* From "OES_EGL_image" error reporting. We report GL_INVALID_OPERATION
 239     * for EGL images from non-tile aligned sufaces in gen4 hw and earlier which has
 240     * trouble resolving back to destination image due to alignment issues.
 241     */
 242    if (!brw->has_surface_tile_offset &&
 243        (draw_x != 0 || draw_y != 0)) {
 244       _mesa_error(&brw->ctx, GL_INVALID_OPERATION, __func__);
 245       intel_miptree_release(&mt);
 246       return NULL;
 247    }
 248
 249    mt->offset = image->offset;
 250
 251    return mt;
 252 }
 253
 254 void
 255 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 256                    GLint texture_format,
 257                    __DRIdrawable *dPriv)
 258 {
 259    struct gl_framebuffer *fb = dPriv->driverPrivate;
 260    struct brw_context *brw = pDRICtx->driverPrivate;
 261    struct gl_context *ctx = &brw->ctx;
 262    struct intel_renderbuffer *rb;
 263    struct gl_texture_object *texObj;
 264    struct gl_texture_image *texImage;
 265    mesa_format texFormat = MESA_FORMAT_NONE;
 266    struct intel_mipmap_tree *mt;
 267    GLenum internal_format = 0;
 268
 269    texObj = _mesa_get_current_tex_object(ctx, target);
 270
 271    if (!texObj)
 272       return;
 273
 274    if (dPriv->lastStamp != dPriv->dri2.stamp ||
 275        !pDRICtx->driScreenPriv->dri2.useInvalidate)
 276       intel_update_renderbuffers(pDRICtx, dPriv);
 277
 278    rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 279    /* If the miptree isn't set, then intel_update_renderbuffers was unable
 280     * to get the BO for the drawable from the window system.
 281     */
 282    if (!rb || !rb->mt)
 283       return;
 284
 285    if (rb->mt->cpp == 4) {
 286       if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
 287          internal_format = GL_RGB;
 288          texFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 289       }
 290       else {
 291          internal_format = GL_RGBA;
 292          texFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 293       }
 294    } else if (rb->mt->cpp == 2) {
 295       internal_format = GL_RGB;
 296       texFormat = MESA_FORMAT_B5G6R5_UNORM;
 297    }
 298
 299    intel_miptree_make_shareable(brw, rb->mt);
 300    mt = intel_miptree_create_for_bo(brw, rb->mt->bo, texFormat, 0,
 301                                     rb->Base.Base.Width,
 302                                     rb->Base.Base.Height,
 303                                     1, rb->mt->pitch, 0);
 304    if (mt == NULL)
 305        return;
 306    mt->target = target;
 307    mt->total_width = rb->Base.Base.Width;
 308    mt->total_height = rb->Base.Base.Height;
 309
 310    _mesa_lock_texture(&brw->ctx, texObj);
 311    texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
 312    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 313    intel_miptree_release(&mt);
 314    _mesa_unlock_texture(&brw->ctx, texObj);
 315 }
 316
 317 static GLboolean
 318 intel_bind_renderbuffer_tex_image(struct gl_context *ctx,
 319                                   struct gl_renderbuffer *rb,
 320                                   struct gl_texture_image *image)
 321 {
 322    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
 323    struct intel_texture_image *intel_image = intel_texture_image(image);
 324    struct gl_texture_object *texobj = image->TexObject;
 325    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 326
 327    /* We can only handle RB allocated with AllocRenderbufferStorage, or
 328     * window-system renderbuffers.
 329     */
 330    assert(!rb->TexImage);
 331
 332    if (!irb->mt)
 333       return false;
 334
 335    _mesa_lock_texture(ctx, texobj);
 336    _mesa_init_teximage_fields(ctx, image,
 337                               rb->Width, rb->Height, 1,
 338                               0, rb->InternalFormat, rb->Format);
 339    image->NumSamples = rb->NumSamples;
 340
 341    intel_miptree_reference(&intel_image->mt, irb->mt);
 342
 343    /* Immediately validate the image to the object. */
 344    intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 345
 346    intel_texobj->needs_validate = true;
 347    _mesa_unlock_texture(ctx, texobj);
 348
 349    return true;
 350 }
 351
 352 void
 353 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 354 {
 355    /* The old interface didn't have the format argument, so copy our
 356     * implementation's behavior at the time.
 357     */
 358    intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 359 }
 360
 361 static void
 362 intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
 363                               struct gl_texture_object *texObj,
 364                               struct gl_texture_image *texImage,
 365                               GLeglImageOES image_handle)
 366 {
 367    struct brw_context *brw = brw_context(ctx);
 368    struct intel_mipmap_tree *mt;
 369    __DRIscreen *screen;
 370    __DRIimage *image;
 371
 372    screen = brw->intelScreen->driScrnPriv;
 373    image = screen->dri2.image->lookupEGLImage(screen, image_handle,
 374                                               screen->loaderPrivate);
 375    if (image == NULL)
 376       return;
 377
 378    /* We support external textures only for EGLImages created with
 379     * EGL_EXT_image_dma_buf_import. We may lift that restriction in the future.
 380     */
 381    if (target == GL_TEXTURE_EXTERNAL_OES && !image->dma_buf_imported) {
 382       _mesa_error(ctx, GL_INVALID_OPERATION,
 383             "glEGLImageTargetTexture2DOES(external target is enabled only "
 384                "for images created with EGL_EXT_image_dma_buf_import");
 385       return;
 386    }
 387
 388    /* Disallow depth/stencil textures: we don't have a way to pass the
 389     * separate stencil miptree of a GL_DEPTH_STENCIL texture through.
 390     */
 391    if (image->has_depthstencil) {
 392       _mesa_error(ctx, GL_INVALID_OPERATION, __func__);
 393       return;
 394    }
 395
 396    if (image->planar_format && image->planar_format->nplanes > 0)
 397       mt = create_mt_for_planar_dri_image(brw, target, image);
 398    else
 399       mt = create_mt_for_dri_image(brw, target, image);
 400    if (mt == NULL)
 401       return;
 402
 403    struct intel_texture_object *intel_texobj = intel_texture_object(texObj);
 404    intel_texobj->planar_format = image->planar_format;
 405
 406    const GLenum internal_format =
 407       image->internal_format != 0 ?
 408       image->internal_format : _mesa_get_format_base_format(mt->format);
 409    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 410    intel_miptree_release(&mt);
 411 }
 412
 413 /**
 414  * \brief A fast path for glGetTexImage.
 415  *
 416  * \see intel_readpixels_tiled_memcpy()
 417  */
 418 bool
 419 intel_gettexsubimage_tiled_memcpy(struct gl_context *ctx,
 420                                   struct gl_texture_image *texImage,
 421                                   GLint xoffset, GLint yoffset,
 422                                   GLsizei width, GLsizei height,
 423                                   GLenum format, GLenum type,
 424                                   GLvoid *pixels,
 425                                   const struct gl_pixelstore_attrib *packing)
 426 {
 427    struct brw_context *brw = brw_context(ctx);
 428    struct intel_texture_image *image = intel_texture_image(texImage);
 429    int dst_pitch;
 430
 431    /* The miptree's buffer. */
 432    drm_intel_bo *bo;
 433
 434    int error = 0;
 435
 436    uint32_t cpp;
 437    mem_copy_fn mem_copy = NULL;
 438
 439    /* This fastpath is restricted to specific texture types:
 440     * a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
 441     * more types.
 442     *
 443     * FINISHME: The restrictions below on packing alignment and packing row
 444     * length are likely unneeded now because we calculate the destination stride
 445     * with _mesa_image_row_stride. However, before removing the restrictions
 446     * we need tests.
 447     */
 448    if (!brw->has_llc ||
 449        !(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
 450        !(texImage->TexObject->Target == GL_TEXTURE_2D ||
 451          texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
 452        pixels == NULL ||
 453        _mesa_is_bufferobj(packing->BufferObj) ||
 454        packing->Alignment > 4 ||
 455        packing->SkipPixels > 0 ||
 456        packing->SkipRows > 0 ||
 457        (packing->RowLength != 0 && packing->RowLength != width) ||
 458        packing->SwapBytes ||
 459        packing->LsbFirst ||
 460        packing->Invert)
 461       return false;
 462
 463    /* We can't handle copying from RGBX or BGRX because the tiled_memcpy
 464     * function doesn't set the last channel to 1. Note this checks BaseFormat
 465     * rather than TexFormat in case the RGBX format is being simulated with an
 466     * RGBA format.
 467     */
 468    if (texImage->_BaseFormat == GL_RGB)
 469       return false;
 470
 471    if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp))
 472       return false;
 473
 474    /* If this is a nontrivial texture view, let another path handle it instead. */
 475    if (texImage->TexObject->MinLayer)
 476       return false;
 477
 478    if (!image->mt ||
 479        (image->mt->tiling != I915_TILING_X &&
 480        image->mt->tiling != I915_TILING_Y)) {
 481       /* The algorithm is written only for X- or Y-tiled memory. */
 482       return false;
 483    }
 484
 485    /* Since we are going to write raw data to the miptree, we need to resolve
 486     * any pending fast color clears before we start.
 487     */
 488    intel_miptree_resolve_color(brw, image->mt, 0);
 489
 490    bo = image->mt->bo;
 491
 492    if (drm_intel_bo_references(brw->batch.bo, bo)) {
 493       perf_debug("Flushing before mapping a referenced bo.\n");
 494       intel_batchbuffer_flush(brw);
 495    }
 496
 497    error = brw_bo_map(brw, bo, false /* write enable */, "miptree");
 498    if (error) {
 499       DBG("%s: failed to map bo\n", __func__);
 500       return false;
 501    }
 502
 503    dst_pitch = _mesa_image_row_stride(packing, width, format, type);
 504
 505    DBG("%s: level=%d x,y=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
 506        "mesa_format=0x%x tiling=%d "
 507        "packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d)\n",
 508        __func__, texImage->Level, xoffset, yoffset, width, height,
 509        format, type, texImage->TexFormat, image->mt->tiling,
 510        packing->Alignment, packing->RowLength, packing->SkipPixels,
 511        packing->SkipRows);
 512
 513    int level = texImage->Level + texImage->TexObject->MinLevel;
 514
 515    /* Adjust x and y offset based on miplevel */
 516    xoffset += image->mt->level[level].level_x;
 517    yoffset += image->mt->level[level].level_y;
 518
 519    tiled_to_linear(
 520       xoffset * cpp, (xoffset + width) * cpp,
 521       yoffset, yoffset + height,
 522       pixels - (ptrdiff_t) yoffset * dst_pitch - (ptrdiff_t) xoffset * cpp,
 523       bo->virtual,
 524       dst_pitch, image->mt->pitch,
 525       brw->has_swizzling,
 526       image->mt->tiling,
 527       mem_copy
 528    );
 529
 530    drm_intel_bo_unmap(bo);
 531    return true;
 532 }
 533
 534 static void
 535 intel_get_tex_sub_image(struct gl_context *ctx,
 536                         GLint xoffset, GLint yoffset, GLint zoffset,
 537                         GLsizei width, GLsizei height, GLint depth,
 538                         GLenum format, GLenum type, GLvoid *pixels,
 539                         struct gl_texture_image *texImage)
 540 {
 541    struct brw_context *brw = brw_context(ctx);
 542    bool ok;
 543
 544    DBG("%s\n", __func__);
 545
 546    if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
 547       if (_mesa_meta_pbo_GetTexSubImage(ctx, 3, texImage,
 548                                         xoffset, yoffset, zoffset,
 549                                         width, height, depth, format, type,
 550                                         pixels, &ctx->Pack)) {
 551          /* Flush to guarantee coherency between the render cache and other
 552           * caches the PBO could potentially be bound to after this point.
 553           * See the related comment in intelReadPixels() for a more detailed
 554           * explanation.
 555           */
 556          brw_emit_mi_flush(brw);
 557          return;
 558       }
 559
 560       perf_debug("%s: fallback to CPU mapping in PBO case\n", __func__);
 561    }
 562
 563    ok = intel_gettexsubimage_tiled_memcpy(ctx, texImage, xoffset, yoffset,
 564                                           width, height,
 565                                           format, type, pixels, &ctx->Pack);
 566
 567    if(ok)
 568       return;
 569
 570    _mesa_meta_GetTexSubImage(ctx, xoffset, yoffset, zoffset,
 571                              width, height, depth,
 572                              format, type, pixels, texImage);
 573
 574    DBG("%s - DONE\n", __func__);
 575 }
 576
 577 static void
 578 flush_astc_denorms(struct gl_context *ctx, GLuint dims,
 579                    struct gl_texture_image *texImage,
 580                    GLint xoffset, GLint yoffset, GLint zoffset,
 581                    GLsizei width, GLsizei height, GLsizei depth)
 582 {
 583    struct compressed_pixelstore store;
 584    _mesa_compute_compressed_pixelstore(dims, texImage->TexFormat,
 585                                        width, height, depth,
 586                                        &ctx->Unpack, &store);
 587
 588    for (int slice = 0; slice < store.CopySlices; slice++) {
 589
 590       /* Map dest texture buffer */
 591       GLubyte *dstMap;
 592       GLint dstRowStride;
 593       ctx->Driver.MapTextureImage(ctx, texImage, slice + zoffset,
 594                                   xoffset, yoffset, width, height,
 595                                   GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
 596                                   &dstMap, &dstRowStride);
 597       if (!dstMap)
 598          continue;
 599
 600       for (int i = 0; i < store.CopyRowsPerSlice; i++) {
 601
 602          /* An ASTC block is stored in little endian mode. The byte that
 603           * contains bits 0..7 is stored at the lower address in memory.
 604           */
 605          struct astc_void_extent {
 606             uint16_t header : 12;
 607             uint16_t dontcare[3];
 608             uint16_t R;
 609             uint16_t G;
 610             uint16_t B;
 611             uint16_t A;
 612          } *blocks = (struct astc_void_extent*) dstMap;
 613
 614          /* Iterate over every copied block in the row */
 615          for (int j = 0; j < store.CopyBytesPerRow / 16; j++) {
 616
 617             /* Check if the header matches that of an LDR void-extent block */
 618             if (blocks[j].header == 0xDFC) {
 619
 620                /* Flush UNORM16 values that would be denormalized */
 621                if (blocks[j].A < 4) blocks[j].A = 0;
 622                if (blocks[j].B < 4) blocks[j].B = 0;
 623                if (blocks[j].G < 4) blocks[j].G = 0;
 624                if (blocks[j].R < 4) blocks[j].R = 0;
 625             }
 626          }
 627
 628          dstMap += dstRowStride;
 629       }
 630
 631       ctx->Driver.UnmapTextureImage(ctx, texImage, slice + zoffset);
 632    }
 633 }
 634
 635
 636 static void
 637 intelCompressedTexSubImage(struct gl_context *ctx, GLuint dims,
 638                         struct gl_texture_image *texImage,
 639                         GLint xoffset, GLint yoffset, GLint zoffset,
 640                         GLsizei width, GLsizei height, GLsizei depth,
 641                         GLenum format,
 642                         GLsizei imageSize, const GLvoid *data)
 643 {
 644    /* Upload the compressed data blocks */
 645    _mesa_store_compressed_texsubimage(ctx, dims, texImage,
 646                                       xoffset, yoffset, zoffset,
 647                                       width, height, depth,
 648                                       format, imageSize, data);
 649
 650    /* Fix up copied ASTC blocks if necessary */
 651    GLenum gl_format = _mesa_compressed_format_to_glenum(ctx,
 652                                                         texImage->TexFormat);
 653    bool is_linear_astc = _mesa_is_astc_format(gl_format) &&
 654                         !_mesa_is_srgb_format(gl_format);
 655    struct brw_context *brw = (struct brw_context*) ctx;
 656    if (brw->gen == 9 && is_linear_astc)
 657       flush_astc_denorms(ctx, dims, texImage,
 658                          xoffset, yoffset, zoffset,
 659                          width, height, depth);
 660 }
 661
 662 void
 663 intelInitTextureImageFuncs(struct dd_function_table *functions)
 664 {
 665    functions->TexImage = intelTexImage;
 666    functions->CompressedTexSubImage = intelCompressedTexSubImage;
 667    functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
 668    functions->BindRenderbufferTexImage = intel_bind_renderbuffer_tex_image;
 669    functions->GetTexSubImage = intel_get_tex_sub_image;
 670 }