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/texstore.h"
  11 #include "main/texgetimage.h"
  12 #include "main/texobj.h"
  13 #include "main/texstore.h"
  14 #include "main/teximage.h"
  15
  16 #include "intel_context.h"
  17 #include "intel_mipmap_tree.h"
  18 #include "intel_buffer_objects.h"
  19 #include "intel_batchbuffer.h"
  20 #include "intel_tex.h"
  21 #include "intel_blit.h"
  22 #include "intel_fbo.h"
  23
  24 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  25
  26 /* Functions to store texture images.  Where possible, mipmap_tree's
  27  * will be created or further instantiated with image data, otherwise
  28  * images will be stored in malloc'd memory.  A validation step is
  29  * required to pull those images into a mipmap tree, or otherwise
  30  * decide a fallback is required.
  31  */
  32
  33
  34 static int
  35 logbase2(int n)
  36 {
  37    GLint i = 1;
  38    GLint log2 = 0;
  39
  40    while (n > i) {
  41       i *= 2;
  42       log2++;
  43    }
  44
  45    return log2;
  46 }
  47
  48
  49 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
  50  * 1).
  51  *
  52  * Otherwise, if max_level >= level >= min_level, create tree with
  53  * space for textures from min_level down to max_level.
  54  *
  55  * Otherwise, create tree with space for textures from (level
  56  * 0)..(1x1).  Consider pruning this tree at a validation if the
  57  * saving is worth it.
  58  */
  59 static void
  60 guess_and_alloc_mipmap_tree(struct intel_context *intel,
  61                             struct intel_texture_object *intelObj,
  62                             struct intel_texture_image *intelImage,
  63                             GLboolean expect_accelerated_upload)
  64 {
  65    GLuint firstLevel;
  66    GLuint lastLevel;
  67    GLuint width = intelImage->base.Width;
  68    GLuint height = intelImage->base.Height;
  69    GLuint depth = intelImage->base.Depth;
  70    GLuint l2width, l2height, l2depth;
  71    GLuint i, comp_byte = 0;
  72    GLuint texelBytes;
  73
  74    DBG("%s\n", __FUNCTION__);
  75
  76    if (intelImage->base.Border ||
  77        ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
  78         ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
  79          (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
  80       return;
  81
  82    if (intelImage->level > intelObj->base.BaseLevel &&
  83        (intelImage->base.Width == 1 ||
  84         (intelObj->base.Target != GL_TEXTURE_1D &&
  85          intelImage->base.Height == 1) ||
  86         (intelObj->base.Target == GL_TEXTURE_3D &&
  87          intelImage->base.Depth == 1)))
  88       return;
  89
  90    /* If this image disrespects BaseLevel, allocate from level zero.
  91     * Usually BaseLevel == 0, so it's unlikely to happen.
  92     */
  93    if (intelImage->level < intelObj->base.BaseLevel)
  94       firstLevel = 0;
  95    else
  96       firstLevel = intelObj->base.BaseLevel;
  97
  98
  99    /* Figure out image dimensions at start level.
 100     */
 101    for (i = intelImage->level; i > firstLevel; i--) {
 102       width <<= 1;
 103       if (height != 1)
 104          height <<= 1;
 105       if (depth != 1)
 106          depth <<= 1;
 107    }
 108
 109    /* Guess a reasonable value for lastLevel.  This is probably going
 110     * to be wrong fairly often and might mean that we have to look at
 111     * resizable buffers, or require that buffers implement lazy
 112     * pagetable arrangements.
 113     */
 114    if ((intelObj->base.MinFilter == GL_NEAREST ||
 115         intelObj->base.MinFilter == GL_LINEAR) &&
 116        intelImage->level == firstLevel) {
 117       lastLevel = firstLevel;
 118    }
 119    else {
 120       l2width = logbase2(width);
 121       l2height = logbase2(height);
 122       l2depth = logbase2(depth);
 123       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 124    }
 125
 126    assert(!intelObj->mt);
 127    if (_mesa_is_format_compressed(intelImage->base.TexFormat))
 128       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat);
 129
 130    texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat);
 131
 132    intelObj->mt = intel_miptree_create(intel,
 133                                        intelObj->base.Target,
 134                                        intelImage->base._BaseFormat,
 135                                        intelImage->base.InternalFormat,
 136                                        firstLevel,
 137                                        lastLevel,
 138                                        width,
 139                                        height,
 140                                        depth,
 141                                        texelBytes,
 142                                        comp_byte,
 143                                        expect_accelerated_upload);
 144
 145    DBG("%s - success\n", __FUNCTION__);
 146 }
 147
 148
 149
 150
 151 static GLuint
 152 target_to_face(GLenum target)
 153 {
 154    switch (target) {
 155    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 156    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 157    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 158    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 159    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 160    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 161       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 162    default:
 163       return 0;
 164    }
 165 }
 166
 167 /* There are actually quite a few combinations this will work for,
 168  * more than what I've listed here.
 169  */
 170 static GLboolean
 171 check_pbo_format(GLint internalFormat,
 172                  GLenum format, GLenum type,
 173                  gl_format mesa_format)
 174 {
 175    switch (internalFormat) {
 176    case 4:
 177    case GL_RGBA:
 178       return (format == GL_BGRA &&
 179               (type == GL_UNSIGNED_BYTE ||
 180                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 181               mesa_format == MESA_FORMAT_ARGB8888);
 182    case 3:
 183    case GL_RGB:
 184       return (format == GL_RGB &&
 185               type == GL_UNSIGNED_SHORT_5_6_5 &&
 186               mesa_format == MESA_FORMAT_RGB565);
 187    case GL_YCBCR_MESA:
 188       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 189    default:
 190       return GL_FALSE;
 191    }
 192 }
 193
 194
 195 /* XXX: Do this for TexSubImage also:
 196  */
 197 static GLboolean
 198 try_pbo_upload(struct intel_context *intel,
 199                struct intel_texture_image *intelImage,
 200                const struct gl_pixelstore_attrib *unpack,
 201                GLint internalFormat,
 202                GLint width, GLint height,
 203                GLenum format, GLenum type, const void *pixels)
 204 {
 205    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 206    GLuint src_offset, src_stride;
 207    GLuint dst_offset, dst_stride;
 208
 209    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 210        intel->ctx._ImageTransferState ||
 211        unpack->SkipPixels || unpack->SkipRows) {
 212       DBG("%s: failure 1\n", __FUNCTION__);
 213       return GL_FALSE;
 214    }
 215
 216    /* note: potential 64-bit ptr to 32-bit int cast */
 217    src_offset = (GLuint) (unsigned long) pixels;
 218
 219    if (unpack->RowLength > 0)
 220       src_stride = unpack->RowLength;
 221    else
 222       src_stride = width;
 223
 224    dst_offset = intel_miptree_image_offset(intelImage->mt,
 225                                            intelImage->face,
 226                                            intelImage->level);
 227
 228    dst_stride = intelImage->mt->pitch;
 229
 230    intelFlush(&intel->ctx);
 231    LOCK_HARDWARE(intel);
 232    {
 233       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 234       dri_bo *dst_buffer = intel_region_buffer(intel,
 235                                                intelImage->mt->region,
 236                                                INTEL_WRITE_FULL);
 237
 238
 239       if (!intelEmitCopyBlit(intel,
 240                              intelImage->mt->cpp,
 241                              src_stride, src_buffer, src_offset, GL_FALSE,
 242                              dst_stride, dst_buffer, dst_offset, GL_FALSE,
 243                              0, 0, 0, 0, width, height,
 244                              GL_COPY)) {
 245          UNLOCK_HARDWARE(intel);
 246          return GL_FALSE;
 247       }
 248    }
 249    UNLOCK_HARDWARE(intel);
 250
 251    return GL_TRUE;
 252 }
 253
 254
 255 static GLboolean
 256 try_pbo_zcopy(struct intel_context *intel,
 257               struct intel_texture_image *intelImage,
 258               const struct gl_pixelstore_attrib *unpack,
 259               GLint internalFormat,
 260               GLint width, GLint height,
 261               GLenum format, GLenum type, const void *pixels)
 262 {
 263    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 264    GLuint src_offset, src_stride;
 265    GLuint dst_offset, dst_stride;
 266
 267    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 268        intel->ctx._ImageTransferState ||
 269        unpack->SkipPixels || unpack->SkipRows) {
 270       DBG("%s: failure 1\n", __FUNCTION__);
 271       return GL_FALSE;
 272    }
 273
 274    /* note: potential 64-bit ptr to 32-bit int cast */
 275    src_offset = (GLuint) (unsigned long) pixels;
 276
 277    if (unpack->RowLength > 0)
 278       src_stride = unpack->RowLength;
 279    else
 280       src_stride = width;
 281
 282    dst_offset = intel_miptree_image_offset(intelImage->mt,
 283                                            intelImage->face,
 284                                            intelImage->level);
 285
 286    dst_stride = intelImage->mt->pitch;
 287
 288    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 289       DBG("%s: failure 2\n", __FUNCTION__);
 290       return GL_FALSE;
 291    }
 292
 293    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 294
 295    return GL_TRUE;
 296 }
 297
 298
 299 static void
 300 intelTexImage(GLcontext * ctx,
 301               GLint dims,
 302               GLenum target, GLint level,
 303               GLint internalFormat,
 304               GLint width, GLint height, GLint depth,
 305               GLint border,
 306               GLenum format, GLenum type, const void *pixels,
 307               const struct gl_pixelstore_attrib *unpack,
 308               struct gl_texture_object *texObj,
 309               struct gl_texture_image *texImage, GLsizei imageSize,
 310               GLboolean compressed)
 311 {
 312    struct intel_context *intel = intel_context(ctx);
 313    struct intel_texture_object *intelObj = intel_texture_object(texObj);
 314    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 315    GLint postConvWidth = width;
 316    GLint postConvHeight = height;
 317    GLint texelBytes, sizeInBytes;
 318    GLuint dstRowStride = 0, srcRowStride = texImage->RowStride;
 319
 320    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 321        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 322
 323    intelFlush(ctx);
 324
 325    intelImage->face = target_to_face(target);
 326    intelImage->level = level;
 327
 328    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 329       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 330                                          &postConvHeight);
 331    }
 332
 333    /* choose the texture format */
 334    texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
 335                                                   format, type);
 336
 337    if (_mesa_is_format_compressed(texImage->TexFormat)) {
 338       texelBytes = 0;
 339    }
 340    else {
 341       texelBytes = _mesa_get_format_bytes(texImage->TexFormat);
 342
 343       /* Minimum pitch of 32 bytes */
 344       if (postConvWidth * texelBytes < 32) {
 345          postConvWidth = 32 / texelBytes;
 346          texImage->RowStride = postConvWidth;
 347       }
 348
 349       if (!intelImage->mt) {
 350           assert(texImage->RowStride == postConvWidth);
 351       }
 352    }
 353
 354    /* Release the reference to a potentially orphaned buffer.
 355     * Release any old malloced memory.
 356     */
 357    if (intelImage->mt) {
 358       intel_miptree_release(intel, &intelImage->mt);
 359       assert(!texImage->Data);
 360    }
 361    else if (texImage->Data) {
 362       _mesa_free_texmemory(texImage->Data);
 363       texImage->Data = NULL;
 364    }
 365
 366    /* If this is the only texture image in the tree, could call
 367     * bmBufferData with NULL data to free the old block and avoid
 368     * waiting on any outstanding fences.
 369     */
 370    if (intelObj->mt &&
 371        intelObj->mt->first_level == level &&
 372        intelObj->mt->last_level == level &&
 373        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 374        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 375                                   intelImage->face, intelImage->level)) {
 376
 377       DBG("release it\n");
 378       intel_miptree_release(intel, &intelObj->mt);
 379       assert(!intelObj->mt);
 380    }
 381
 382    if (!intelObj->mt) {
 383       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
 384       if (!intelObj->mt) {
 385          DBG("guess_and_alloc_mipmap_tree: failed\n");
 386       }
 387    }
 388
 389    assert(!intelImage->mt);
 390
 391    if (intelObj->mt &&
 392        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 393                                  intelImage->face, intelImage->level)) {
 394
 395       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 396       assert(intelImage->mt);
 397    } else if (intelImage->base.Border == 0) {
 398       int comp_byte = 0;
 399       GLuint texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat);
 400       GLenum baseFormat = _mesa_get_format_base_format(intelImage->base.TexFormat);
 401       if (_mesa_is_format_compressed(intelImage->base.TexFormat)) {
 402          comp_byte =
 403             intel_compressed_num_bytes(intelImage->base.TexFormat);
 404       }
 405
 406       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 407        * a miptree, so create one just for our level and store it in the image.
 408        * It'll get moved into the object miptree at validate time.
 409        */
 410       intelImage->mt = intel_miptree_create(intel, target,
 411                                             baseFormat,
 412                                             internalFormat,
 413                                             level, level,
 414                                             width, height, depth,
 415                                             texelBytes,
 416                                             comp_byte, pixels == NULL);
 417
 418    }
 419
 420    /* PBO fastpaths:
 421     */
 422    if (dims <= 2 &&
 423        intelImage->mt &&
 424        _mesa_is_bufferobj(unpack->BufferObj) &&
 425        check_pbo_format(internalFormat, format,
 426                         type, intelImage->base.TexFormat)) {
 427
 428       DBG("trying pbo upload\n");
 429
 430       /* Attempt to texture directly from PBO data (zero copy upload).
 431        *
 432        * Currently disable as it can lead to worse as well as better
 433        * performance (in particular when intel_region_cow() is
 434        * required).
 435        */
 436       if (intelObj->mt == intelImage->mt &&
 437           intelObj->mt->first_level == level &&
 438           intelObj->mt->last_level == level) {
 439
 440          if (try_pbo_zcopy(intel, intelImage, unpack,
 441                            internalFormat,
 442                            width, height, format, type, pixels)) {
 443
 444             DBG("pbo zcopy upload succeeded\n");
 445             return;
 446          }
 447       }
 448
 449
 450       /* Otherwise, attempt to use the blitter for PBO image uploads.
 451        */
 452       if (try_pbo_upload(intel, intelImage, unpack,
 453                          internalFormat,
 454                          width, height, format, type, pixels)) {
 455          DBG("pbo upload succeeded\n");
 456          return;
 457       }
 458
 459       DBG("pbo upload failed\n");
 460    }
 461
 462    /* intelCopyTexImage calls this function with pixels == NULL, with
 463     * the expectation that the mipmap tree will be set up but nothing
 464     * more will be done.  This is where those calls return:
 465     */
 466    if (compressed) {
 467       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 468                                                       unpack,
 469                                                       "glCompressedTexImage");
 470    } else {
 471       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 472                                            format, type,
 473                                            pixels, unpack, "glTexImage");
 474    }
 475
 476    LOCK_HARDWARE(intel);
 477
 478    if (intelImage->mt) {
 479       if (pixels != NULL)
 480          texImage->Data = intel_miptree_image_map(intel,
 481                                                   intelImage->mt,
 482                                                   intelImage->face,
 483                                                   intelImage->level,
 484                                                   &dstRowStride,
 485                                                   intelImage->base.ImageOffsets);
 486       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 487    }
 488    else {
 489       /* Allocate regular memory and store the image there temporarily.   */
 490       if (_mesa_is_format_compressed(texImage->TexFormat)) {
 491          sizeInBytes = ctx->Driver.CompressedTextureSize(ctx,
 492                                                          texImage->Width,
 493                                                          texImage->Height,
 494                                                          texImage->Depth,
 495                                                          texImage->TexFormat);
 496          dstRowStride =
 497             _mesa_compressed_row_stride(texImage->TexFormat, width);
 498          assert(dims != 3);
 499       }
 500       else {
 501          dstRowStride = postConvWidth * texelBytes;
 502          sizeInBytes = depth * dstRowStride * postConvHeight;
 503       }
 504
 505       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 506    }
 507
 508    DBG("Upload image %dx%dx%d row_len %d "
 509        "pitch %d pixels %d compressed %d\n",
 510        width, height, depth, width * texelBytes, dstRowStride,
 511        pixels ? 1 : 0, compressed);
 512
 513    /* Copy data.  Would like to know when it's ok for us to eg. use
 514     * the blitter to copy.  Or, use the hardware to do the format
 515     * conversion and copy:
 516     */
 517    if (pixels) {
 518        if (compressed) {
 519            if (intelImage->mt) {
 520                struct intel_region *dst = intelImage->mt->region;
 521                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 522                                0, 0,
 523                                intelImage->mt->level[level].width,
 524                                (intelImage->mt->level[level].height+3)/4,
 525                                pixels,
 526                                srcRowStride,
 527                                0, 0);
 528            }
 529            else {
 530                memcpy(texImage->Data, pixels, imageSize);
 531            }
 532        }
 533        else if (!_mesa_texstore(ctx, dims,
 534                                 texImage->_BaseFormat,
 535                                 texImage->TexFormat,
 536                                 texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 537                                 dstRowStride,
 538                                 texImage->ImageOffsets,
 539                                 width, height, depth,
 540                                 format, type, pixels, unpack)) {
 541           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 542        }
 543    }
 544
 545    _mesa_unmap_teximage_pbo(ctx, unpack);
 546
 547    if (intelImage->mt) {
 548       if (pixels != NULL)
 549          intel_miptree_image_unmap(intel, intelImage->mt);
 550       texImage->Data = NULL;
 551    }
 552
 553    UNLOCK_HARDWARE(intel);
 554 }
 555
 556
 557 static void
 558 intelTexImage3D(GLcontext * ctx,
 559                 GLenum target, GLint level,
 560                 GLint internalFormat,
 561                 GLint width, GLint height, GLint depth,
 562                 GLint border,
 563                 GLenum format, GLenum type, const void *pixels,
 564                 const struct gl_pixelstore_attrib *unpack,
 565                 struct gl_texture_object *texObj,
 566                 struct gl_texture_image *texImage)
 567 {
 568    intelTexImage(ctx, 3, target, level,
 569                  internalFormat, width, height, depth, border,
 570                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 571 }
 572
 573
 574 static void
 575 intelTexImage2D(GLcontext * ctx,
 576                 GLenum target, GLint level,
 577                 GLint internalFormat,
 578                 GLint width, GLint height, GLint border,
 579                 GLenum format, GLenum type, const void *pixels,
 580                 const struct gl_pixelstore_attrib *unpack,
 581                 struct gl_texture_object *texObj,
 582                 struct gl_texture_image *texImage)
 583 {
 584    intelTexImage(ctx, 2, target, level,
 585                  internalFormat, width, height, 1, border,
 586                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 587 }
 588
 589
 590 static void
 591 intelTexImage1D(GLcontext * ctx,
 592                 GLenum target, GLint level,
 593                 GLint internalFormat,
 594                 GLint width, GLint border,
 595                 GLenum format, GLenum type, const void *pixels,
 596                 const struct gl_pixelstore_attrib *unpack,
 597                 struct gl_texture_object *texObj,
 598                 struct gl_texture_image *texImage)
 599 {
 600    intelTexImage(ctx, 1, target, level,
 601                  internalFormat, width, 1, 1, border,
 602                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 603 }
 604
 605
 606 static void
 607 intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 608                            GLint internalFormat,
 609                            GLint width, GLint height, GLint border,
 610                            GLsizei imageSize, const GLvoid *data,
 611                            struct gl_texture_object *texObj,
 612                            struct gl_texture_image *texImage )
 613 {
 614    intelTexImage(ctx, 2, target, level,
 615                  internalFormat, width, height, 1, border,
 616                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
 617 }
 618
 619
 620 /**
 621  * Need to map texture image into memory before copying image data,
 622  * then unmap it.
 623  */
 624 static void
 625 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 626                     GLenum format, GLenum type, GLvoid * pixels,
 627                     struct gl_texture_object *texObj,
 628                     struct gl_texture_image *texImage, GLboolean compressed)
 629 {
 630    struct intel_context *intel = intel_context(ctx);
 631    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 632
 633    /* If we're reading from a texture that has been rendered to, need to
 634     * make sure rendering is complete.
 635     * We could probably predicate this on texObj->_RenderToTexture
 636     */
 637    intelFlush(ctx);
 638
 639    /* Map */
 640    if (intelImage->mt) {
 641       /* Image is stored in hardware format in a buffer managed by the
 642        * kernel.  Need to explicitly map and unmap it.
 643        */
 644       intelImage->base.Data =
 645          intel_miptree_image_map(intel,
 646                                  intelImage->mt,
 647                                  intelImage->face,
 648                                  intelImage->level,
 649                                  &intelImage->base.RowStride,
 650                                  intelImage->base.ImageOffsets);
 651       intelImage->base.RowStride /= intelImage->mt->cpp;
 652    }
 653    else {
 654       /* Otherwise, the image should actually be stored in
 655        * intelImage->base.Data.  This is pretty confusing for
 656        * everybody, I'd much prefer to separate the two functions of
 657        * texImage->Data - storage for texture images in main memory
 658        * and access (ie mappings) of images.  In other words, we'd
 659        * create a new texImage->Map field and leave Data simply for
 660        * storage.
 661        */
 662       assert(intelImage->base.Data);
 663    }
 664
 665
 666    if (compressed) {
 667       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 668                                     texObj, texImage);
 669    } else {
 670       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 671                          texObj, texImage);
 672    }
 673
 674
 675    /* Unmap */
 676    if (intelImage->mt) {
 677       intel_miptree_image_unmap(intel, intelImage->mt);
 678       intelImage->base.Data = NULL;
 679    }
 680 }
 681
 682
 683 static void
 684 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 685                  GLenum format, GLenum type, GLvoid * pixels,
 686                  struct gl_texture_object *texObj,
 687                  struct gl_texture_image *texImage)
 688 {
 689    intel_get_tex_image(ctx, target, level, format, type, pixels,
 690                        texObj, texImage, GL_FALSE);
 691 }
 692
 693
 694 static void
 695 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 696                            GLvoid *pixels,
 697                            struct gl_texture_object *texObj,
 698                            struct gl_texture_image *texImage)
 699 {
 700    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 701                        texObj, texImage, GL_TRUE);
 702 }
 703
 704
 705 void
 706 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 707                   unsigned long long offset, GLint depth, GLuint pitch)
 708 {
 709    struct intel_context *intel = pDRICtx->driverPrivate;
 710    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 711    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 712
 713    if (!intelObj)
 714       return;
 715
 716    if (intelObj->mt)
 717       intel_miptree_release(intel, &intelObj->mt);
 718
 719    intelObj->imageOverride = GL_TRUE;
 720    intelObj->depthOverride = depth;
 721    intelObj->pitchOverride = pitch;
 722
 723    if (offset)
 724       intelObj->textureOffset = offset;
 725 }
 726
 727 void
 728 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 729                    GLint glx_texture_format,
 730                    __DRIdrawable *dPriv)
 731 {
 732    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 733    struct intel_context *intel = pDRICtx->driverPrivate;
 734    struct intel_texture_object *intelObj;
 735    struct intel_texture_image *intelImage;
 736    struct intel_mipmap_tree *mt;
 737    struct intel_renderbuffer *rb;
 738    struct gl_texture_unit *texUnit;
 739    struct gl_texture_object *texObj;
 740    struct gl_texture_image *texImage;
 741    int level = 0, type, format, internalFormat;
 742
 743    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 744    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 745    intelObj = intel_texture_object(texObj);
 746
 747    if (!intelObj)
 748       return;
 749
 750    intel_update_renderbuffers(pDRICtx, dPriv);
 751
 752    rb = intel_fb->color_rb[0];
 753    /* If the region isn't set, then intel_update_renderbuffers was unable
 754     * to get the buffers for the drawable.
 755     */
 756    if (rb->region == NULL)
 757       return;
 758
 759    type = GL_BGRA;
 760    format = GL_UNSIGNED_BYTE;
 761    if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
 762       internalFormat = GL_RGB;
 763    else
 764       internalFormat = GL_RGBA;
 765
 766    mt = intel_miptree_create_for_region(intel, target,
 767                                         internalFormat,
 768                                         0, 0, rb->region, 1, 0);
 769    if (mt == NULL)
 770        return;
 771
 772    _mesa_lock_texture(&intel->ctx, texObj);
 773
 774    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 775    intelImage = intel_texture_image(texImage);
 776
 777    if (intelImage->mt) {
 778       intel_miptree_release(intel, &intelImage->mt);
 779       assert(!texImage->Data);
 780    }
 781    if (intelObj->mt)
 782       intel_miptree_release(intel, &intelObj->mt);
 783
 784    intelObj->mt = mt;
 785    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 786                               rb->region->width, rb->region->height, 1,
 787                               0, internalFormat);
 788
 789    intelImage->face = target_to_face(target);
 790    intelImage->level = level;
 791    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 792                                                   type, format);
 793    texImage->RowStride = rb->region->pitch;
 794    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 795
 796    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 797                                   intelImage->face, intelImage->level)) {
 798            fprintf(stderr, "miptree doesn't match image\n");
 799    }
 800
 801    _mesa_unlock_texture(&intel->ctx, texObj);
 802 }
 803
 804 void
 805 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 806 {
 807    /* The old interface didn't have the format argument, so copy our
 808     * implementation's behavior at the time.
 809     */
 810    intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 811 }
 812
 813
 814 void
 815 intelInitTextureImageFuncs(struct dd_function_table *functions)
 816 {
 817    functions->TexImage1D = intelTexImage1D;
 818    functions->TexImage2D = intelTexImage2D;
 819    functions->TexImage3D = intelTexImage3D;
 820    functions->GetTexImage = intelGetTexImage;
 821
 822    functions->CompressedTexImage2D = intelCompressedTexImage2D;
 823    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 824 }