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