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                                intelImage->base.Base.NumSamples,
 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 static struct intel_mipmap_tree *
 218 create_mt_for_planar_dri_image(struct brw_context *brw,
 219                                GLenum target, __DRIimage *image)
 220 {
 221    struct intel_image_format *f = image->planar_format;
 222    struct intel_mipmap_tree *planar_mt;
 223
 224    for (int i = 0; i < f->nplanes; i++) {
 225       const int index = f->planes[i].buffer_index;
 226       const uint32_t dri_format = f->planes[i].dri_format;
 227       const mesa_format format = driImageFormatToGLFormat(dri_format);
 228       const uint32_t width = image->width >> f->planes[i].width_shift;
 229       const uint32_t height = image->height >> f->planes[i].height_shift;
 230
 231       /* Disable creation of the texture's aux buffers because the driver
 232        * exposes no EGL API to manage them. That is, there is no API for
 233        * resolving the aux buffer's content to the main buffer nor for
 234        * invalidating the aux buffer's content.
 235        */
 236       struct intel_mipmap_tree *mt =
 237          intel_miptree_create_for_bo(brw, image->bo, format,
 238                                      image->offsets[index],
 239                                      width, height, 1,
 240                                      image->strides[index],
 241                                      MIPTREE_LAYOUT_DISABLE_AUX);
 242       if (mt == NULL)
 243          return NULL;
 244
 245       mt->target = target;
 246       mt->total_width = width;
 247       mt->total_height = height;
 248
 249       if (i == 0)
 250          planar_mt = mt;
 251       else
 252          planar_mt->plane[i - 1] = mt;
 253    }
 254
 255    return planar_mt;
 256 }
 257
 258 /**
 259  * Binds a BO to a texture image, as if it was uploaded by glTexImage2D().
 260  *
 261  * Used for GLX_EXT_texture_from_pixmap and EGL image extensions,
 262  */
 263 static struct intel_mipmap_tree *
 264 create_mt_for_dri_image(struct brw_context *brw,
 265                         GLenum target, __DRIimage *image)
 266 {
 267    struct gl_context *ctx = &brw->ctx;
 268    struct intel_mipmap_tree *mt;
 269    uint32_t draw_x, draw_y;
 270    mesa_format format = image->format;
 271
 272    if (!ctx->TextureFormatSupported[format]) {
 273       /* The texture storage paths in core Mesa detect if the driver does not
 274        * support the user-requested format, and then searches for a
 275        * fallback format. The DRIimage code bypasses core Mesa, though. So we
 276        * do the fallbacks here for important formats.
 277        *
 278        * We must support DRM_FOURCC_XBGR8888 textures because the Android
 279        * framework produces HAL_PIXEL_FORMAT_RGBX8888 winsys surfaces, which
 280        * the Chrome OS compositor consumes as dma_buf EGLImages.
 281        */
 282       format = _mesa_format_fallback_rgbx_to_rgba(format);
 283    }
 284
 285    if (!ctx->TextureFormatSupported[format])
 286       return NULL;
 287
 288    /* Disable creation of the texture's aux buffers because the driver exposes
 289     * no EGL API to manage them. That is, there is no API for resolving the aux
 290     * buffer's content to the main buffer nor for invalidating the aux buffer's
 291     * content.
 292     */
 293    mt = intel_miptree_create_for_bo(brw, image->bo, format,
 294                                     0, image->width, image->height, 1,
 295                                     image->pitch,
 296                                     MIPTREE_LAYOUT_DISABLE_AUX);
 297    if (mt == NULL)
 298       return NULL;
 299
 300    mt->target = target;
 301    mt->total_width = image->width;
 302    mt->total_height = image->height;
 303    mt->level[0].slice[0].x_offset = image->tile_x;
 304    mt->level[0].slice[0].y_offset = image->tile_y;
 305
 306    intel_miptree_get_tile_offsets(mt, 0, 0, &draw_x, &draw_y);
 307
 308    /* From "OES_EGL_image" error reporting. We report GL_INVALID_OPERATION
 309     * for EGL images from non-tile aligned sufaces in gen4 hw and earlier which has
 310     * trouble resolving back to destination image due to alignment issues.
 311     */
 312    if (!brw->has_surface_tile_offset &&
 313        (draw_x != 0 || draw_y != 0)) {
 314       _mesa_error(&brw->ctx, GL_INVALID_OPERATION, __func__);
 315       intel_miptree_release(&mt);
 316       return NULL;
 317    }
 318
 319    mt->offset = image->offset;
 320
 321    return mt;
 322 }
 323
 324 void
 325 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 326                    GLint texture_format,
 327                    __DRIdrawable *dPriv)
 328 {
 329    struct gl_framebuffer *fb = dPriv->driverPrivate;
 330    struct brw_context *brw = pDRICtx->driverPrivate;
 331    struct gl_context *ctx = &brw->ctx;
 332    struct intel_renderbuffer *rb;
 333    struct gl_texture_object *texObj;
 334    struct gl_texture_image *texImage;
 335    mesa_format texFormat = MESA_FORMAT_NONE;
 336    struct intel_mipmap_tree *mt;
 337    GLenum internal_format = 0;
 338
 339    texObj = _mesa_get_current_tex_object(ctx, target);
 340
 341    if (!texObj)
 342       return;
 343
 344    if (dPriv->lastStamp != dPriv->dri2.stamp ||
 345        !pDRICtx->driScreenPriv->dri2.useInvalidate)
 346       intel_update_renderbuffers(pDRICtx, dPriv);
 347
 348    rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 349    /* If the miptree isn't set, then intel_update_renderbuffers was unable
 350     * to get the BO for the drawable from the window system.
 351     */
 352    if (!rb || !rb->mt)
 353       return;
 354
 355    if (rb->mt->cpp == 4) {
 356       if (texture_format == __DRI_TEXTURE_FORMAT_RGB) {
 357          internal_format = GL_RGB;
 358          texFormat = MESA_FORMAT_B8G8R8X8_UNORM;
 359       }
 360       else {
 361          internal_format = GL_RGBA;
 362          texFormat = MESA_FORMAT_B8G8R8A8_UNORM;
 363       }
 364    } else if (rb->mt->cpp == 2) {
 365       internal_format = GL_RGB;
 366       texFormat = MESA_FORMAT_B5G6R5_UNORM;
 367    }
 368
 369    intel_miptree_make_shareable(brw, rb->mt);
 370    mt = intel_miptree_create_for_bo(brw, rb->mt->bo, texFormat, 0,
 371                                     rb->Base.Base.Width,
 372                                     rb->Base.Base.Height,
 373                                     1, rb->mt->pitch, 0);
 374    if (mt == NULL)
 375        return;
 376    mt->target = target;
 377    mt->total_width = rb->Base.Base.Width;
 378    mt->total_height = rb->Base.Base.Height;
 379
 380    _mesa_lock_texture(&brw->ctx, texObj);
 381    texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
 382    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 383    intel_miptree_release(&mt);
 384    _mesa_unlock_texture(&brw->ctx, texObj);
 385 }
 386
 387 static GLboolean
 388 intel_bind_renderbuffer_tex_image(struct gl_context *ctx,
 389                                   struct gl_renderbuffer *rb,
 390                                   struct gl_texture_image *image)
 391 {
 392    struct intel_renderbuffer *irb = intel_renderbuffer(rb);
 393    struct intel_texture_image *intel_image = intel_texture_image(image);
 394    struct gl_texture_object *texobj = image->TexObject;
 395    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
 396
 397    /* We can only handle RB allocated with AllocRenderbufferStorage, or
 398     * window-system renderbuffers.
 399     */
 400    assert(!rb->TexImage);
 401
 402    if (!irb->mt)
 403       return false;
 404
 405    _mesa_lock_texture(ctx, texobj);
 406    _mesa_init_teximage_fields(ctx, image,
 407                               rb->Width, rb->Height, 1,
 408                               0, rb->InternalFormat, rb->Format);
 409    image->NumSamples = rb->NumSamples;
 410
 411    intel_miptree_reference(&intel_image->mt, irb->mt);
 412
 413    /* Immediately validate the image to the object. */
 414    intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 415
 416    intel_texobj->needs_validate = true;
 417    _mesa_unlock_texture(ctx, texobj);
 418
 419    return true;
 420 }
 421
 422 void
 423 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 424 {
 425    /* The old interface didn't have the format argument, so copy our
 426     * implementation's behavior at the time.
 427     */
 428    intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 429 }
 430
 431 static void
 432 intel_image_target_texture_2d(struct gl_context *ctx, GLenum target,
 433                               struct gl_texture_object *texObj,
 434                               struct gl_texture_image *texImage,
 435                               GLeglImageOES image_handle)
 436 {
 437    struct brw_context *brw = brw_context(ctx);
 438    struct intel_mipmap_tree *mt;
 439    __DRIscreen *dri_screen = brw->screen->driScrnPriv;
 440    __DRIimage *image;
 441
 442    image = dri_screen->dri2.image->lookupEGLImage(dri_screen, image_handle,
 443                                                   dri_screen->loaderPrivate);
 444    if (image == NULL)
 445       return;
 446
 447    /* We support external textures only for EGLImages created with
 448     * EGL_EXT_image_dma_buf_import. We may lift that restriction in the future.
 449     */
 450    if (target == GL_TEXTURE_EXTERNAL_OES && !image->dma_buf_imported) {
 451       _mesa_error(ctx, GL_INVALID_OPERATION,
 452             "glEGLImageTargetTexture2DOES(external target is enabled only "
 453                "for images created with EGL_EXT_image_dma_buf_import");
 454       return;
 455    }
 456
 457    /* Disallow depth/stencil textures: we don't have a way to pass the
 458     * separate stencil miptree of a GL_DEPTH_STENCIL texture through.
 459     */
 460    if (image->has_depthstencil) {
 461       _mesa_error(ctx, GL_INVALID_OPERATION, __func__);
 462       return;
 463    }
 464
 465    if (image->planar_format && image->planar_format->nplanes > 0)
 466       mt = create_mt_for_planar_dri_image(brw, target, image);
 467    else
 468       mt = create_mt_for_dri_image(brw, target, image);
 469    if (mt == NULL)
 470       return;
 471
 472    struct intel_texture_object *intel_texobj = intel_texture_object(texObj);
 473    intel_texobj->planar_format = image->planar_format;
 474
 475    const GLenum internal_format =
 476       image->internal_format != 0 ?
 477       image->internal_format : _mesa_get_format_base_format(mt->format);
 478    intel_set_texture_image_mt(brw, texImage, internal_format, mt);
 479    intel_miptree_release(&mt);
 480 }
 481
 482 /**
 483  * \brief A fast path for glGetTexImage.
 484  *
 485  * \see intel_readpixels_tiled_memcpy()
 486  */
 487 bool
 488 intel_gettexsubimage_tiled_memcpy(struct gl_context *ctx,
 489                                   struct gl_texture_image *texImage,
 490                                   GLint xoffset, GLint yoffset,
 491                                   GLsizei width, GLsizei height,
 492                                   GLenum format, GLenum type,
 493                                   GLvoid *pixels,
 494                                   const struct gl_pixelstore_attrib *packing)
 495 {
 496    struct brw_context *brw = brw_context(ctx);
 497    struct intel_texture_image *image = intel_texture_image(texImage);
 498    int dst_pitch;
 499
 500    /* The miptree's buffer. */
 501    struct brw_bo *bo;
 502
 503    uint32_t cpp;
 504    mem_copy_fn mem_copy = NULL;
 505
 506    /* This fastpath is restricted to specific texture types:
 507     * a 2D BGRA, RGBA, L8 or A8 texture. It could be generalized to support
 508     * more types.
 509     *
 510     * FINISHME: The restrictions below on packing alignment and packing row
 511     * length are likely unneeded now because we calculate the destination stride
 512     * with _mesa_image_row_stride. However, before removing the restrictions
 513     * we need tests.
 514     */
 515    if (!brw->has_llc ||
 516        !(type == GL_UNSIGNED_BYTE || type == GL_UNSIGNED_INT_8_8_8_8_REV) ||
 517        !(texImage->TexObject->Target == GL_TEXTURE_2D ||
 518          texImage->TexObject->Target == GL_TEXTURE_RECTANGLE) ||
 519        pixels == NULL ||
 520        _mesa_is_bufferobj(packing->BufferObj) ||
 521        packing->Alignment > 4 ||
 522        packing->SkipPixels > 0 ||
 523        packing->SkipRows > 0 ||
 524        (packing->RowLength != 0 && packing->RowLength != width) ||
 525        packing->SwapBytes ||
 526        packing->LsbFirst ||
 527        packing->Invert)
 528       return false;
 529
 530    /* We can't handle copying from RGBX or BGRX because the tiled_memcpy
 531     * function doesn't set the last channel to 1. Note this checks BaseFormat
 532     * rather than TexFormat in case the RGBX format is being simulated with an
 533     * RGBA format.
 534     */
 535    if (texImage->_BaseFormat == GL_RGB)
 536       return false;
 537
 538    if (!intel_get_memcpy(texImage->TexFormat, format, type, &mem_copy, &cpp))
 539       return false;
 540
 541    /* If this is a nontrivial texture view, let another path handle it instead. */
 542    if (texImage->TexObject->MinLayer)
 543       return false;
 544
 545    if (!image->mt ||
 546        (image->mt->tiling != I915_TILING_X &&
 547        image->mt->tiling != I915_TILING_Y)) {
 548       /* The algorithm is written only for X- or Y-tiled memory. */
 549       return false;
 550    }
 551
 552    /* tiled_to_linear() assumes that if the object is swizzled, it is using
 553     * I915_BIT6_SWIZZLE_9_10 for X and I915_BIT6_SWIZZLE_9 for Y.  This is only
 554     * true on gen5 and above.
 555     *
 556     * The killer on top is that some gen4 have an L-shaped swizzle mode, where
 557     * parts of the memory aren't swizzled at all. Userspace just can't handle
 558     * that.
 559     */
 560    if (brw->gen < 5 && brw->has_swizzling)
 561       return false;
 562
 563    int level = texImage->Level + texImage->TexObject->MinLevel;
 564
 565    /* Since we are going to write raw data to the miptree, we need to resolve
 566     * any pending fast color clears before we start.
 567     */
 568    assert(image->mt->logical_depth0 == 1);
 569    intel_miptree_access_raw(brw, image->mt, level, 0, true);
 570
 571    bo = image->mt->bo;
 572
 573    if (brw_batch_references(&brw->batch, bo)) {
 574       perf_debug("Flushing before mapping a referenced bo.\n");
 575       intel_batchbuffer_flush(brw);
 576    }
 577
 578    void *map = brw_bo_map(brw, bo, MAP_READ | MAP_RAW);
 579    if (map == NULL) {
 580       DBG("%s: failed to map bo\n", __func__);
 581       return false;
 582    }
 583
 584    dst_pitch = _mesa_image_row_stride(packing, width, format, type);
 585
 586    DBG("%s: level=%d x,y=(%d,%d) (w,h)=(%d,%d) format=0x%x type=0x%x "
 587        "mesa_format=0x%x tiling=%d "
 588        "packing=(alignment=%d row_length=%d skip_pixels=%d skip_rows=%d)\n",
 589        __func__, texImage->Level, xoffset, yoffset, width, height,
 590        format, type, texImage->TexFormat, image->mt->tiling,
 591        packing->Alignment, packing->RowLength, packing->SkipPixels,
 592        packing->SkipRows);
 593
 594    /* Adjust x and y offset based on miplevel */
 595    xoffset += image->mt->level[level].level_x;
 596    yoffset += image->mt->level[level].level_y;
 597
 598    tiled_to_linear(
 599       xoffset * cpp, (xoffset + width) * cpp,
 600       yoffset, yoffset + height,
 601       pixels - (ptrdiff_t) yoffset * dst_pitch - (ptrdiff_t) xoffset * cpp,
 602       map,
 603       dst_pitch, image->mt->pitch,
 604       brw->has_swizzling,
 605       image->mt->tiling,
 606       mem_copy
 607    );
 608
 609    brw_bo_unmap(bo);
 610    return true;
 611 }
 612
 613 static void
 614 intel_get_tex_sub_image(struct gl_context *ctx,
 615                         GLint xoffset, GLint yoffset, GLint zoffset,
 616                         GLsizei width, GLsizei height, GLint depth,
 617                         GLenum format, GLenum type, GLvoid *pixels,
 618                         struct gl_texture_image *texImage)
 619 {
 620    struct brw_context *brw = brw_context(ctx);
 621    bool ok;
 622
 623    DBG("%s\n", __func__);
 624
 625    if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) {
 626       if (_mesa_meta_pbo_GetTexSubImage(ctx, 3, texImage,
 627                                         xoffset, yoffset, zoffset,
 628                                         width, height, depth, format, type,
 629                                         pixels, &ctx->Pack)) {
 630          /* Flush to guarantee coherency between the render cache and other
 631           * caches the PBO could potentially be bound to after this point.
 632           * See the related comment in intelReadPixels() for a more detailed
 633           * explanation.
 634           */
 635          brw_emit_mi_flush(brw);
 636          return;
 637       }
 638
 639       perf_debug("%s: fallback to CPU mapping in PBO case\n", __func__);
 640    }
 641
 642    ok = intel_gettexsubimage_tiled_memcpy(ctx, texImage, xoffset, yoffset,
 643                                           width, height,
 644                                           format, type, pixels, &ctx->Pack);
 645
 646    if(ok)
 647       return;
 648
 649    _mesa_meta_GetTexSubImage(ctx, xoffset, yoffset, zoffset,
 650                              width, height, depth,
 651                              format, type, pixels, texImage);
 652
 653    DBG("%s - DONE\n", __func__);
 654 }
 655
 656 static void
 657 flush_astc_denorms(struct gl_context *ctx, GLuint dims,
 658                    struct gl_texture_image *texImage,
 659                    GLint xoffset, GLint yoffset, GLint zoffset,
 660                    GLsizei width, GLsizei height, GLsizei depth)
 661 {
 662    struct compressed_pixelstore store;
 663    _mesa_compute_compressed_pixelstore(dims, texImage->TexFormat,
 664                                        width, height, depth,
 665                                        &ctx->Unpack, &store);
 666
 667    for (int slice = 0; slice < store.CopySlices; slice++) {
 668
 669       /* Map dest texture buffer */
 670       GLubyte *dstMap;
 671       GLint dstRowStride;
 672       ctx->Driver.MapTextureImage(ctx, texImage, slice + zoffset,
 673                                   xoffset, yoffset, width, height,
 674                                   GL_MAP_READ_BIT | GL_MAP_WRITE_BIT,
 675                                   &dstMap, &dstRowStride);
 676       if (!dstMap)
 677          continue;
 678
 679       for (int i = 0; i < store.CopyRowsPerSlice; i++) {
 680
 681          /* An ASTC block is stored in little endian mode. The byte that
 682           * contains bits 0..7 is stored at the lower address in memory.
 683           */
 684          struct astc_void_extent {
 685             uint16_t header : 12;
 686             uint16_t dontcare[3];
 687             uint16_t R;
 688             uint16_t G;
 689             uint16_t B;
 690             uint16_t A;
 691          } *blocks = (struct astc_void_extent*) dstMap;
 692
 693          /* Iterate over every copied block in the row */
 694          for (int j = 0; j < store.CopyBytesPerRow / 16; j++) {
 695
 696             /* Check if the header matches that of an LDR void-extent block */
 697             if (blocks[j].header == 0xDFC) {
 698
 699                /* Flush UNORM16 values that would be denormalized */
 700                if (blocks[j].A < 4) blocks[j].A = 0;
 701                if (blocks[j].B < 4) blocks[j].B = 0;
 702                if (blocks[j].G < 4) blocks[j].G = 0;
 703                if (blocks[j].R < 4) blocks[j].R = 0;
 704             }
 705          }
 706
 707          dstMap += dstRowStride;
 708       }
 709
 710       ctx->Driver.UnmapTextureImage(ctx, texImage, slice + zoffset);
 711    }
 712 }
 713
 714
 715 static void
 716 intelCompressedTexSubImage(struct gl_context *ctx, GLuint dims,
 717                         struct gl_texture_image *texImage,
 718                         GLint xoffset, GLint yoffset, GLint zoffset,
 719                         GLsizei width, GLsizei height, GLsizei depth,
 720                         GLenum format,
 721                         GLsizei imageSize, const GLvoid *data)
 722 {
 723    /* Upload the compressed data blocks */
 724    _mesa_store_compressed_texsubimage(ctx, dims, texImage,
 725                                       xoffset, yoffset, zoffset,
 726                                       width, height, depth,
 727                                       format, imageSize, data);
 728
 729    /* Fix up copied ASTC blocks if necessary */
 730    GLenum gl_format = _mesa_compressed_format_to_glenum(ctx,
 731                                                         texImage->TexFormat);
 732    bool is_linear_astc = _mesa_is_astc_format(gl_format) &&
 733                         !_mesa_is_srgb_format(gl_format);
 734    struct brw_context *brw = (struct brw_context*) ctx;
 735    if (brw->gen == 9 && is_linear_astc)
 736       flush_astc_denorms(ctx, dims, texImage,
 737                          xoffset, yoffset, zoffset,
 738                          width, height, depth);
 739 }
 740
 741 void
 742 intelInitTextureImageFuncs(struct dd_function_table *functions)
 743 {
 744    functions->TexImage = intelTexImage;
 745    functions->CompressedTexSubImage = intelCompressedTexSubImage;
 746    functions->EGLImageTargetTexture2D = intel_image_target_texture_2d;
 747    functions->BindRenderbufferTexImage = intel_bind_renderbuffer_tex_image;
 748    functions->GetTexSubImage = intel_get_tex_sub_image;
 749 }