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

   1
   2 #include "main/glheader.h"
   3 #include "main/macros.h"
   4 #include "main/mtypes.h"
   5 #include "main/enums.h"
   6 #include "main/bufferobj.h"
   7 #include "main/convolve.h"
   8 #include "main/context.h"
   9 #include "main/texcompress.h"
  10 #include "main/texformat.h"
  11 #include "main/texstore.h"
  12 #include "main/texgetimage.h"
  13 #include "main/texobj.h"
  14 #include "main/texstore.h"
  15 #include "main/teximage.h"
  16
  17 #include "intel_context.h"
  18 #include "intel_mipmap_tree.h"
  19 #include "intel_buffer_objects.h"
  20 #include "intel_batchbuffer.h"
  21 #include "intel_tex.h"
  22 #include "intel_blit.h"
  23 #include "intel_fbo.h"
  24
  25 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  26
  27 /* Functions to store texture images.  Where possible, mipmap_tree's
  28  * will be created or further instantiated with image data, otherwise
  29  * images will be stored in malloc'd memory.  A validation step is
  30  * required to pull those images into a mipmap tree, or otherwise
  31  * decide a fallback is required.
  32  */
  33
  34
  35 static int
  36 logbase2(int n)
  37 {
  38    GLint i = 1;
  39    GLint log2 = 0;
  40
  41    while (n > i) {
  42       i *= 2;
  43       log2++;
  44    }
  45
  46    return log2;
  47 }
  48
  49
  50 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
  51  * 1).
  52  *
  53  * Otherwise, if max_level >= level >= min_level, create tree with
  54  * space for textures from min_level down to max_level.
  55  *
  56  * Otherwise, create tree with space for textures from (level
  57  * 0)..(1x1).  Consider pruning this tree at a validation if the
  58  * saving is worth it.
  59  */
  60 static void
  61 guess_and_alloc_mipmap_tree(struct intel_context *intel,
  62                             struct intel_texture_object *intelObj,
  63                             struct intel_texture_image *intelImage,
  64                             GLboolean expect_accelerated_upload)
  65 {
  66    GLuint firstLevel;
  67    GLuint lastLevel;
  68    GLuint width = intelImage->base.Width;
  69    GLuint height = intelImage->base.Height;
  70    GLuint depth = intelImage->base.Depth;
  71    GLuint l2width, l2height, l2depth;
  72    GLuint i, comp_byte = 0;
  73    GLuint texelBytes;
  74
  75    DBG("%s\n", __FUNCTION__);
  76
  77    if (intelImage->base.Border ||
  78        ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
  79         ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
  80          (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
  81       return;
  82
  83    if (intelImage->level > intelObj->base.BaseLevel &&
  84        (intelImage->base.Width == 1 ||
  85         (intelObj->base.Target != GL_TEXTURE_1D &&
  86          intelImage->base.Height == 1) ||
  87         (intelObj->base.Target == GL_TEXTURE_3D &&
  88          intelImage->base.Depth == 1)))
  89       return;
  90
  91    /* If this image disrespects BaseLevel, allocate from level zero.
  92     * Usually BaseLevel == 0, so it's unlikely to happen.
  93     */
  94    if (intelImage->level < intelObj->base.BaseLevel)
  95       firstLevel = 0;
  96    else
  97       firstLevel = intelObj->base.BaseLevel;
  98
  99
 100    /* Figure out image dimensions at start level.
 101     */
 102    for (i = intelImage->level; i > firstLevel; i--) {
 103       width <<= 1;
 104       if (height != 1)
 105          height <<= 1;
 106       if (depth != 1)
 107          depth <<= 1;
 108    }
 109
 110    /* Guess a reasonable value for lastLevel.  This is probably going
 111     * to be wrong fairly often and might mean that we have to look at
 112     * resizable buffers, or require that buffers implement lazy
 113     * pagetable arrangements.
 114     */
 115    if ((intelObj->base.MinFilter == GL_NEAREST ||
 116         intelObj->base.MinFilter == GL_LINEAR) &&
 117        intelImage->level == firstLevel) {
 118       lastLevel = firstLevel;
 119    }
 120    else {
 121       l2width = logbase2(width);
 122       l2height = logbase2(height);
 123       l2depth = logbase2(depth);
 124       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 125    }
 126
 127    assert(!intelObj->mt);
 128    if (intelImage->base.IsCompressed)
 129       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 130
 131    texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat->MesaFormat);
 132
 133    intelObj->mt = intel_miptree_create(intel,
 134                                        intelObj->base.Target,
 135                                        intelImage->base._BaseFormat,
 136                                        intelImage->base.InternalFormat,
 137                                        firstLevel,
 138                                        lastLevel,
 139                                        width,
 140                                        height,
 141                                        depth,
 142                                        texelBytes,
 143                                        comp_byte,
 144                                        expect_accelerated_upload);
 145
 146    DBG("%s - success\n", __FUNCTION__);
 147 }
 148
 149
 150
 151
 152 static GLuint
 153 target_to_face(GLenum target)
 154 {
 155    switch (target) {
 156    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 157    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 158    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 159    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 160    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 161    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 162       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 163    default:
 164       return 0;
 165    }
 166 }
 167
 168 /* There are actually quite a few combinations this will work for,
 169  * more than what I've listed here.
 170  */
 171 static GLboolean
 172 check_pbo_format(GLint internalFormat,
 173                  GLenum format, GLenum type,
 174                  const struct gl_texture_format *mesa_format)
 175 {
 176    switch (internalFormat) {
 177    case 4:
 178    case GL_RGBA:
 179       return (format == GL_BGRA &&
 180               (type == GL_UNSIGNED_BYTE ||
 181                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 182               mesa_format == &_mesa_texformat_argb8888);
 183    case 3:
 184    case GL_RGB:
 185       return (format == GL_RGB &&
 186               type == GL_UNSIGNED_SHORT_5_6_5 &&
 187               mesa_format == &_mesa_texformat_rgb565);
 188    case GL_YCBCR_MESA:
 189       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 190    default:
 191       return GL_FALSE;
 192    }
 193 }
 194
 195
 196 /* XXX: Do this for TexSubImage also:
 197  */
 198 static GLboolean
 199 try_pbo_upload(struct intel_context *intel,
 200                struct intel_texture_image *intelImage,
 201                const struct gl_pixelstore_attrib *unpack,
 202                GLint internalFormat,
 203                GLint width, GLint height,
 204                GLenum format, GLenum type, const void *pixels)
 205 {
 206    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 207    GLuint src_offset, src_stride;
 208    GLuint dst_offset, dst_stride;
 209
 210    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 211        intel->ctx._ImageTransferState ||
 212        unpack->SkipPixels || unpack->SkipRows) {
 213       DBG("%s: failure 1\n", __FUNCTION__);
 214       return GL_FALSE;
 215    }
 216
 217    /* note: potential 64-bit ptr to 32-bit int cast */
 218    src_offset = (GLuint) (unsigned long) pixels;
 219
 220    if (unpack->RowLength > 0)
 221       src_stride = unpack->RowLength;
 222    else
 223       src_stride = width;
 224
 225    dst_offset = intel_miptree_image_offset(intelImage->mt,
 226                                            intelImage->face,
 227                                            intelImage->level);
 228
 229    dst_stride = intelImage->mt->pitch;
 230
 231    intelFlush(&intel->ctx);
 232    LOCK_HARDWARE(intel);
 233    {
 234       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 235       dri_bo *dst_buffer = intel_region_buffer(intel,
 236                                                intelImage->mt->region,
 237                                                INTEL_WRITE_FULL);
 238
 239
 240       if (!intelEmitCopyBlit(intel,
 241                              intelImage->mt->cpp,
 242                              src_stride, src_buffer, src_offset, GL_FALSE,
 243                              dst_stride, dst_buffer, dst_offset, GL_FALSE,
 244                              0, 0, 0, 0, width, height,
 245                              GL_COPY)) {
 246          UNLOCK_HARDWARE(intel);
 247          return GL_FALSE;
 248       }
 249    }
 250    UNLOCK_HARDWARE(intel);
 251
 252    return GL_TRUE;
 253 }
 254
 255
 256 static GLboolean
 257 try_pbo_zcopy(struct intel_context *intel,
 258               struct intel_texture_image *intelImage,
 259               const struct gl_pixelstore_attrib *unpack,
 260               GLint internalFormat,
 261               GLint width, GLint height,
 262               GLenum format, GLenum type, const void *pixels)
 263 {
 264    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 265    GLuint src_offset, src_stride;
 266    GLuint dst_offset, dst_stride;
 267
 268    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 269        intel->ctx._ImageTransferState ||
 270        unpack->SkipPixels || unpack->SkipRows) {
 271       DBG("%s: failure 1\n", __FUNCTION__);
 272       return GL_FALSE;
 273    }
 274
 275    /* note: potential 64-bit ptr to 32-bit int cast */
 276    src_offset = (GLuint) (unsigned long) pixels;
 277
 278    if (unpack->RowLength > 0)
 279       src_stride = unpack->RowLength;
 280    else
 281       src_stride = width;
 282
 283    dst_offset = intel_miptree_image_offset(intelImage->mt,
 284                                            intelImage->face,
 285                                            intelImage->level);
 286
 287    dst_stride = intelImage->mt->pitch;
 288
 289    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 290       DBG("%s: failure 2\n", __FUNCTION__);
 291       return GL_FALSE;
 292    }
 293
 294    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 295
 296    return GL_TRUE;
 297 }
 298
 299
 300 static void
 301 intelTexImage(GLcontext * ctx,
 302               GLint dims,
 303               GLenum target, GLint level,
 304               GLint internalFormat,
 305               GLint width, GLint height, GLint depth,
 306               GLint border,
 307               GLenum format, GLenum type, const void *pixels,
 308               const struct gl_pixelstore_attrib *unpack,
 309               struct gl_texture_object *texObj,
 310               struct gl_texture_image *texImage, GLsizei imageSize,
 311               GLboolean compressed)
 312 {
 313    struct intel_context *intel = intel_context(ctx);
 314    struct intel_texture_object *intelObj = intel_texture_object(texObj);
 315    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 316    GLint postConvWidth = width;
 317    GLint postConvHeight = height;
 318    GLint texelBytes, sizeInBytes;
 319    GLuint dstRowStride = 0, srcRowStride = texImage->RowStride;
 320
 321    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 322        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 323
 324    intelFlush(ctx);
 325
 326    intelImage->face = target_to_face(target);
 327    intelImage->level = level;
 328
 329    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 330       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 331                                          &postConvHeight);
 332    }
 333
 334    /* choose the texture format */
 335    texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
 336                                                   format, type);
 337
 338    _mesa_set_fetch_functions(texImage, dims);
 339
 340    if (_mesa_is_format_compressed(texImage->TexFormat->MesaFormat)) {
 341       texelBytes = 0;
 342       texImage->IsCompressed = GL_TRUE;
 343       texImage->CompressedSize =
 344          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 345                                            texImage->Height, texImage->Depth,
 346                                            texImage->TexFormat->MesaFormat);
 347    } else {
 348       texelBytes = _mesa_get_format_bytes(texImage->TexFormat->MesaFormat);
 349
 350       /* Minimum pitch of 32 bytes */
 351       if (postConvWidth * texelBytes < 32) {
 352          postConvWidth = 32 / texelBytes;
 353          texImage->RowStride = postConvWidth;
 354       }
 355
 356       if (!intelImage->mt) {
 357           assert(texImage->RowStride == postConvWidth);
 358       }
 359    }
 360
 361    /* Release the reference to a potentially orphaned buffer.
 362     * Release any old malloced memory.
 363     */
 364    if (intelImage->mt) {
 365       intel_miptree_release(intel, &intelImage->mt);
 366       assert(!texImage->Data);
 367    }
 368    else if (texImage->Data) {
 369       _mesa_free_texmemory(texImage->Data);
 370       texImage->Data = NULL;
 371    }
 372
 373    /* If this is the only texture image in the tree, could call
 374     * bmBufferData with NULL data to free the old block and avoid
 375     * waiting on any outstanding fences.
 376     */
 377    if (intelObj->mt &&
 378        intelObj->mt->first_level == level &&
 379        intelObj->mt->last_level == level &&
 380        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 381        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 382                                   intelImage->face, intelImage->level)) {
 383
 384       DBG("release it\n");
 385       intel_miptree_release(intel, &intelObj->mt);
 386       assert(!intelObj->mt);
 387    }
 388
 389    if (!intelObj->mt) {
 390       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
 391       if (!intelObj->mt) {
 392          DBG("guess_and_alloc_mipmap_tree: failed\n");
 393       }
 394    }
 395
 396    assert(!intelImage->mt);
 397
 398    if (intelObj->mt &&
 399        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 400                                  intelImage->face, intelImage->level)) {
 401
 402       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 403       assert(intelImage->mt);
 404    } else if (intelImage->base.Border == 0) {
 405       int comp_byte = 0;
 406       GLuint texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat->MesaFormat);
 407       GLenum baseFormat = _mesa_get_format_base_format(intelImage->base.TexFormat->MesaFormat);
 408       if (intelImage->base.IsCompressed) {
 409          comp_byte =
 410             intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 411       }
 412
 413       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 414        * a miptree, so create one just for our level and store it in the image.
 415        * It'll get moved into the object miptree at validate time.
 416        */
 417       intelImage->mt = intel_miptree_create(intel, target,
 418                                             baseFormat,
 419                                             internalFormat,
 420                                             level, level,
 421                                             width, height, depth,
 422                                             texelBytes,
 423                                             comp_byte, pixels == NULL);
 424
 425    }
 426
 427    /* PBO fastpaths:
 428     */
 429    if (dims <= 2 &&
 430        intelImage->mt &&
 431        _mesa_is_bufferobj(unpack->BufferObj) &&
 432        check_pbo_format(internalFormat, format,
 433                         type, intelImage->base.TexFormat)) {
 434
 435       DBG("trying pbo upload\n");
 436
 437       /* Attempt to texture directly from PBO data (zero copy upload).
 438        *
 439        * Currently disable as it can lead to worse as well as better
 440        * performance (in particular when intel_region_cow() is
 441        * required).
 442        */
 443       if (intelObj->mt == intelImage->mt &&
 444           intelObj->mt->first_level == level &&
 445           intelObj->mt->last_level == level) {
 446
 447          if (try_pbo_zcopy(intel, intelImage, unpack,
 448                            internalFormat,
 449                            width, height, format, type, pixels)) {
 450
 451             DBG("pbo zcopy upload succeeded\n");
 452             return;
 453          }
 454       }
 455
 456
 457       /* Otherwise, attempt to use the blitter for PBO image uploads.
 458        */
 459       if (try_pbo_upload(intel, intelImage, unpack,
 460                          internalFormat,
 461                          width, height, format, type, pixels)) {
 462          DBG("pbo upload succeeded\n");
 463          return;
 464       }
 465
 466       DBG("pbo upload failed\n");
 467    }
 468
 469    /* intelCopyTexImage calls this function with pixels == NULL, with
 470     * the expectation that the mipmap tree will be set up but nothing
 471     * more will be done.  This is where those calls return:
 472     */
 473    if (compressed) {
 474       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 475                                                       unpack,
 476                                                       "glCompressedTexImage");
 477    } else {
 478       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 479                                            format, type,
 480                                            pixels, unpack, "glTexImage");
 481    }
 482
 483    LOCK_HARDWARE(intel);
 484
 485    if (intelImage->mt) {
 486       if (pixels != NULL)
 487          texImage->Data = intel_miptree_image_map(intel,
 488                                                   intelImage->mt,
 489                                                   intelImage->face,
 490                                                   intelImage->level,
 491                                                   &dstRowStride,
 492                                                   intelImage->base.ImageOffsets);
 493       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 494    }
 495    else {
 496       /* Allocate regular memory and store the image there temporarily.   */
 497       if (texImage->IsCompressed) {
 498          sizeInBytes = texImage->CompressedSize;
 499          dstRowStride =
 500             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 501          assert(dims != 3);
 502       }
 503       else {
 504          dstRowStride = postConvWidth * texelBytes;
 505          sizeInBytes = depth * dstRowStride * postConvHeight;
 506       }
 507
 508       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 509    }
 510
 511    DBG("Upload image %dx%dx%d row_len %d "
 512        "pitch %d pixels %d compressed %d\n",
 513        width, height, depth, width * texelBytes, dstRowStride,
 514        pixels ? 1 : 0, compressed);
 515
 516    /* Copy data.  Would like to know when it's ok for us to eg. use
 517     * the blitter to copy.  Or, use the hardware to do the format
 518     * conversion and copy:
 519     */
 520    if (pixels) {
 521        if (compressed) {
 522            if (intelImage->mt) {
 523                struct intel_region *dst = intelImage->mt->region;
 524                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 525                                0, 0,
 526                                intelImage->mt->level[level].width,
 527                                (intelImage->mt->level[level].height+3)/4,
 528                                pixels,
 529                                srcRowStride,
 530                                0, 0);
 531            }
 532            else {
 533                memcpy(texImage->Data, pixels, imageSize);
 534            }
 535        }
 536        else if (!_mesa_texstore(ctx, dims,
 537                                 texImage->_BaseFormat,
 538                                 texImage->TexFormat,
 539                                 texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 540                                 dstRowStride,
 541                                 texImage->ImageOffsets,
 542                                 width, height, depth,
 543                                 format, type, pixels, unpack)) {
 544           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 545        }
 546    }
 547
 548    _mesa_unmap_teximage_pbo(ctx, unpack);
 549
 550    if (intelImage->mt) {
 551       if (pixels != NULL)
 552          intel_miptree_image_unmap(intel, intelImage->mt);
 553       texImage->Data = NULL;
 554    }
 555
 556    UNLOCK_HARDWARE(intel);
 557 }
 558
 559
 560 static void
 561 intelTexImage3D(GLcontext * ctx,
 562                 GLenum target, GLint level,
 563                 GLint internalFormat,
 564                 GLint width, GLint height, GLint depth,
 565                 GLint border,
 566                 GLenum format, GLenum type, const void *pixels,
 567                 const struct gl_pixelstore_attrib *unpack,
 568                 struct gl_texture_object *texObj,
 569                 struct gl_texture_image *texImage)
 570 {
 571    intelTexImage(ctx, 3, target, level,
 572                  internalFormat, width, height, depth, border,
 573                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 574 }
 575
 576
 577 static void
 578 intelTexImage2D(GLcontext * ctx,
 579                 GLenum target, GLint level,
 580                 GLint internalFormat,
 581                 GLint width, GLint height, GLint border,
 582                 GLenum format, GLenum type, const void *pixels,
 583                 const struct gl_pixelstore_attrib *unpack,
 584                 struct gl_texture_object *texObj,
 585                 struct gl_texture_image *texImage)
 586 {
 587    intelTexImage(ctx, 2, target, level,
 588                  internalFormat, width, height, 1, border,
 589                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 590 }
 591
 592
 593 static void
 594 intelTexImage1D(GLcontext * ctx,
 595                 GLenum target, GLint level,
 596                 GLint internalFormat,
 597                 GLint width, GLint border,
 598                 GLenum format, GLenum type, const void *pixels,
 599                 const struct gl_pixelstore_attrib *unpack,
 600                 struct gl_texture_object *texObj,
 601                 struct gl_texture_image *texImage)
 602 {
 603    intelTexImage(ctx, 1, target, level,
 604                  internalFormat, width, 1, 1, border,
 605                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 606 }
 607
 608
 609 static void
 610 intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 611                            GLint internalFormat,
 612                            GLint width, GLint height, GLint border,
 613                            GLsizei imageSize, const GLvoid *data,
 614                            struct gl_texture_object *texObj,
 615                            struct gl_texture_image *texImage )
 616 {
 617    intelTexImage(ctx, 2, target, level,
 618                  internalFormat, width, height, 1, border,
 619                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
 620 }
 621
 622
 623 /**
 624  * Need to map texture image into memory before copying image data,
 625  * then unmap it.
 626  */
 627 static void
 628 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 629                     GLenum format, GLenum type, GLvoid * pixels,
 630                     struct gl_texture_object *texObj,
 631                     struct gl_texture_image *texImage, GLboolean compressed)
 632 {
 633    struct intel_context *intel = intel_context(ctx);
 634    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 635
 636    /* If we're reading from a texture that has been rendered to, need to
 637     * make sure rendering is complete.
 638     * We could probably predicate this on texObj->_RenderToTexture
 639     */
 640    intelFlush(ctx);
 641
 642    /* Map */
 643    if (intelImage->mt) {
 644       /* Image is stored in hardware format in a buffer managed by the
 645        * kernel.  Need to explicitly map and unmap it.
 646        */
 647       intelImage->base.Data =
 648          intel_miptree_image_map(intel,
 649                                  intelImage->mt,
 650                                  intelImage->face,
 651                                  intelImage->level,
 652                                  &intelImage->base.RowStride,
 653                                  intelImage->base.ImageOffsets);
 654       intelImage->base.RowStride /= intelImage->mt->cpp;
 655    }
 656    else {
 657       /* Otherwise, the image should actually be stored in
 658        * intelImage->base.Data.  This is pretty confusing for
 659        * everybody, I'd much prefer to separate the two functions of
 660        * texImage->Data - storage for texture images in main memory
 661        * and access (ie mappings) of images.  In other words, we'd
 662        * create a new texImage->Map field and leave Data simply for
 663        * storage.
 664        */
 665       assert(intelImage->base.Data);
 666    }
 667
 668
 669    if (compressed) {
 670       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 671                                     texObj, texImage);
 672    } else {
 673       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 674                          texObj, texImage);
 675    }
 676
 677
 678    /* Unmap */
 679    if (intelImage->mt) {
 680       intel_miptree_image_unmap(intel, intelImage->mt);
 681       intelImage->base.Data = NULL;
 682    }
 683 }
 684
 685
 686 static void
 687 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 688                  GLenum format, GLenum type, GLvoid * pixels,
 689                  struct gl_texture_object *texObj,
 690                  struct gl_texture_image *texImage)
 691 {
 692    intel_get_tex_image(ctx, target, level, format, type, pixels,
 693                        texObj, texImage, GL_FALSE);
 694 }
 695
 696
 697 static void
 698 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 699                            GLvoid *pixels,
 700                            struct gl_texture_object *texObj,
 701                            struct gl_texture_image *texImage)
 702 {
 703    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 704                        texObj, texImage, GL_TRUE);
 705 }
 706
 707
 708 void
 709 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 710                   unsigned long long offset, GLint depth, GLuint pitch)
 711 {
 712    struct intel_context *intel = pDRICtx->driverPrivate;
 713    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 714    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 715
 716    if (!intelObj)
 717       return;
 718
 719    if (intelObj->mt)
 720       intel_miptree_release(intel, &intelObj->mt);
 721
 722    intelObj->imageOverride = GL_TRUE;
 723    intelObj->depthOverride = depth;
 724    intelObj->pitchOverride = pitch;
 725
 726    if (offset)
 727       intelObj->textureOffset = offset;
 728 }
 729
 730 void
 731 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 732                    GLint glx_texture_format,
 733                    __DRIdrawable *dPriv)
 734 {
 735    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 736    struct intel_context *intel = pDRICtx->driverPrivate;
 737    struct intel_texture_object *intelObj;
 738    struct intel_texture_image *intelImage;
 739    struct intel_mipmap_tree *mt;
 740    struct intel_renderbuffer *rb;
 741    struct gl_texture_unit *texUnit;
 742    struct gl_texture_object *texObj;
 743    struct gl_texture_image *texImage;
 744    int level = 0, type, format, internalFormat;
 745
 746    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 747    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 748    intelObj = intel_texture_object(texObj);
 749
 750    if (!intelObj)
 751       return;
 752
 753    intel_update_renderbuffers(pDRICtx, dPriv);
 754
 755    rb = intel_fb->color_rb[0];
 756    /* If the region isn't set, then intel_update_renderbuffers was unable
 757     * to get the buffers for the drawable.
 758     */
 759    if (rb->region == NULL)
 760       return;
 761
 762    type = GL_BGRA;
 763    format = GL_UNSIGNED_BYTE;
 764    if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
 765       internalFormat = GL_RGB;
 766    else
 767       internalFormat = GL_RGBA;
 768
 769    mt = intel_miptree_create_for_region(intel, target,
 770                                         internalFormat,
 771                                         0, 0, rb->region, 1, 0);
 772    if (mt == NULL)
 773        return;
 774
 775    _mesa_lock_texture(&intel->ctx, texObj);
 776
 777    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 778    intelImage = intel_texture_image(texImage);
 779
 780    if (intelImage->mt) {
 781       intel_miptree_release(intel, &intelImage->mt);
 782       assert(!texImage->Data);
 783    }
 784    if (intelObj->mt)
 785       intel_miptree_release(intel, &intelObj->mt);
 786
 787    intelObj->mt = mt;
 788    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 789                               rb->region->width, rb->region->height, 1,
 790                               0, internalFormat);
 791
 792    intelImage->face = target_to_face(target);
 793    intelImage->level = level;
 794    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 795                                                   type, format);
 796    _mesa_set_fetch_functions(texImage, 2);
 797    texImage->RowStride = rb->region->pitch;
 798    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 799
 800    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 801                                   intelImage->face, intelImage->level)) {
 802            fprintf(stderr, "miptree doesn't match image\n");
 803    }
 804
 805    _mesa_unlock_texture(&intel->ctx, texObj);
 806 }
 807
 808 void
 809 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 810 {
 811    /* The old interface didn't have the format argument, so copy our
 812     * implementation's behavior at the time.
 813     */
 814    intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 815 }
 816
 817
 818 void
 819 intelInitTextureImageFuncs(struct dd_function_table *functions)
 820 {
 821    functions->TexImage1D = intelTexImage1D;
 822    functions->TexImage2D = intelTexImage2D;
 823    functions->TexImage3D = intelTexImage3D;
 824    functions->GetTexImage = intelGetTexImage;
 825
 826    functions->CompressedTexImage2D = intelCompressedTexImage2D;
 827    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 828 }