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

   1
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4
   5 #include "main/glheader.h"
   6 #include "main/macros.h"
   7 #include "main/mtypes.h"
   8 #include "main/enums.h"
   9 #include "main/colortab.h"
  10 #include "main/convolve.h"
  11 #include "main/context.h"
  12 #include "main/simple_list.h"
  13 #include "main/texcompress.h"
  14 #include "main/texformat.h"
  15 #include "main/texgetimage.h"
  16 #include "main/texobj.h"
  17 #include "main/texstore.h"
  18 #include "main/teximage.h"
  19
  20 #include "intel_context.h"
  21 #include "intel_mipmap_tree.h"
  22 #include "intel_buffer_objects.h"
  23 #include "intel_batchbuffer.h"
  24 #include "intel_tex.h"
  25 #include "intel_blit.h"
  26 #include "intel_fbo.h"
  27
  28 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  29
  30 /* Functions to store texture images.  Where possible, mipmap_tree's
  31  * will be created or further instantiated with image data, otherwise
  32  * images will be stored in malloc'd memory.  A validation step is
  33  * required to pull those images into a mipmap tree, or otherwise
  34  * decide a fallback is required.
  35  */
  36
  37
  38 static int
  39 logbase2(int n)
  40 {
  41    GLint i = 1;
  42    GLint log2 = 0;
  43
  44    while (n > i) {
  45       i *= 2;
  46       log2++;
  47    }
  48
  49    return log2;
  50 }
  51
  52
  53 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
  54  * 1).
  55  *
  56  * Otherwise, if max_level >= level >= min_level, create tree with
  57  * space for textures from min_level down to max_level.
  58  *
  59  * Otherwise, create tree with space for textures from (level
  60  * 0)..(1x1).  Consider pruning this tree at a validation if the
  61  * saving is worth it.
  62  */
  63 static void
  64 guess_and_alloc_mipmap_tree(struct intel_context *intel,
  65                             struct intel_texture_object *intelObj,
  66                             struct intel_texture_image *intelImage,
  67                             GLboolean expect_accelerated_upload)
  68 {
  69    GLuint firstLevel;
  70    GLuint lastLevel;
  71    GLuint width = intelImage->base.Width;
  72    GLuint height = intelImage->base.Height;
  73    GLuint depth = intelImage->base.Depth;
  74    GLuint l2width, l2height, l2depth;
  75    GLuint i, comp_byte = 0;
  76
  77    DBG("%s\n", __FUNCTION__);
  78
  79    if (intelImage->base.Border ||
  80        ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
  81         ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
  82          (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
  83       return;
  84
  85    if (intelImage->level > intelObj->base.BaseLevel &&
  86        (intelImage->base.Width == 1 ||
  87         (intelObj->base.Target != GL_TEXTURE_1D &&
  88          intelImage->base.Height == 1) ||
  89         (intelObj->base.Target == GL_TEXTURE_3D &&
  90          intelImage->base.Depth == 1)))
  91       return;
  92
  93    /* If this image disrespects BaseLevel, allocate from level zero.
  94     * Usually BaseLevel == 0, so it's unlikely to happen.
  95     */
  96    if (intelImage->level < intelObj->base.BaseLevel)
  97       firstLevel = 0;
  98    else
  99       firstLevel = intelObj->base.BaseLevel;
 100
 101
 102    /* Figure out image dimensions at start level.
 103     */
 104    for (i = intelImage->level; i > firstLevel; i--) {
 105       width <<= 1;
 106       if (height != 1)
 107          height <<= 1;
 108       if (depth != 1)
 109          depth <<= 1;
 110    }
 111
 112    /* Guess a reasonable value for lastLevel.  This is probably going
 113     * to be wrong fairly often and might mean that we have to look at
 114     * resizable buffers, or require that buffers implement lazy
 115     * pagetable arrangements.
 116     */
 117    if ((intelObj->base.MinFilter == GL_NEAREST ||
 118         intelObj->base.MinFilter == GL_LINEAR) &&
 119        intelImage->level == firstLevel) {
 120       lastLevel = firstLevel;
 121    }
 122    else {
 123       l2width = logbase2(width);
 124       l2height = logbase2(height);
 125       l2depth = logbase2(depth);
 126       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 127    }
 128
 129    assert(!intelObj->mt);
 130    if (intelImage->base.IsCompressed)
 131       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 132    intelObj->mt = intel_miptree_create(intel,
 133                                        intelObj->base.Target,
 134                                        intelImage->base.InternalFormat,
 135                                        firstLevel,
 136                                        lastLevel,
 137                                        width,
 138                                        height,
 139                                        depth,
 140                                        intelImage->base.TexFormat->TexelBytes,
 141                                        comp_byte,
 142                                        expect_accelerated_upload);
 143
 144    DBG("%s - success\n", __FUNCTION__);
 145 }
 146
 147
 148
 149
 150 static GLuint
 151 target_to_face(GLenum target)
 152 {
 153    switch (target) {
 154    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 155    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 156    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 157    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 158    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 159    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 160       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 161    default:
 162       return 0;
 163    }
 164 }
 165
 166 /* There are actually quite a few combinations this will work for,
 167  * more than what I've listed here.
 168  */
 169 static GLboolean
 170 check_pbo_format(GLint internalFormat,
 171                  GLenum format, GLenum type,
 172                  const struct gl_texture_format *mesa_format)
 173 {
 174    switch (internalFormat) {
 175    case 4:
 176    case GL_RGBA:
 177       return (format == GL_BGRA &&
 178               (type == GL_UNSIGNED_BYTE ||
 179                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 180               mesa_format == &_mesa_texformat_argb8888);
 181    case 3:
 182    case GL_RGB:
 183       return (format == GL_RGB &&
 184               type == GL_UNSIGNED_SHORT_5_6_5 &&
 185               mesa_format == &_mesa_texformat_rgb565);
 186    case GL_YCBCR_MESA:
 187       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 188    default:
 189       return GL_FALSE;
 190    }
 191 }
 192
 193
 194 /* XXX: Do this for TexSubImage also:
 195  */
 196 static GLboolean
 197 try_pbo_upload(struct intel_context *intel,
 198                struct intel_texture_image *intelImage,
 199                const struct gl_pixelstore_attrib *unpack,
 200                GLint internalFormat,
 201                GLint width, GLint height,
 202                GLenum format, GLenum type, const void *pixels)
 203 {
 204    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 205    GLuint src_offset, src_stride;
 206    GLuint dst_offset, dst_stride;
 207
 208    if (!pbo ||
 209        intel->ctx._ImageTransferState ||
 210        unpack->SkipPixels || unpack->SkipRows) {
 211       DBG("%s: failure 1\n", __FUNCTION__);
 212       return GL_FALSE;
 213    }
 214
 215    /* note: potential 64-bit ptr to 32-bit int cast */
 216    src_offset = (GLuint) (unsigned long) pixels;
 217
 218    if (unpack->RowLength > 0)
 219       src_stride = unpack->RowLength;
 220    else
 221       src_stride = width;
 222
 223    dst_offset = intel_miptree_image_offset(intelImage->mt,
 224                                            intelImage->face,
 225                                            intelImage->level);
 226
 227    dst_stride = intelImage->mt->pitch;
 228
 229    intelFlush(&intel->ctx);
 230    LOCK_HARDWARE(intel);
 231    {
 232       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 233       dri_bo *dst_buffer = intel_region_buffer(intel,
 234                                                intelImage->mt->region,
 235                                                INTEL_WRITE_FULL);
 236
 237
 238       intelEmitCopyBlit(intel,
 239                         intelImage->mt->cpp,
 240                         src_stride, src_buffer, src_offset, GL_FALSE,
 241                         dst_stride, dst_buffer, dst_offset, GL_FALSE,
 242                         0, 0, 0, 0, width, height,
 243                         GL_COPY);
 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 (!pbo ||
 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, internalFormat,
 413                                             level, level,
 414                                             width, height, depth,
 415                                             intelImage->base.TexFormat->TexelBytes,
 416                                             comp_byte, pixels == NULL);
 417
 418    }
 419
 420    /* PBO fastpaths:
 421     */
 422    if (dims <= 2 &&
 423        intelImage->mt &&
 424        intel_buffer_object(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 (texImage->IsCompressed) {
 491          sizeInBytes = texImage->CompressedSize;
 492          dstRowStride =
 493             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 494          assert(dims != 3);
 495       }
 496       else {
 497          dstRowStride = postConvWidth * texelBytes;
 498          sizeInBytes = depth * dstRowStride * postConvHeight;
 499       }
 500
 501       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 502    }
 503
 504    DBG("Upload image %dx%dx%d row_len %d "
 505        "pitch %d pixels %d compressed %d\n",
 506        width, height, depth, width * texelBytes, dstRowStride,
 507        pixels ? 1 : 0, compressed);
 508
 509    /* Copy data.  Would like to know when it's ok for us to eg. use
 510     * the blitter to copy.  Or, use the hardware to do the format
 511     * conversion and copy:
 512     */
 513    if (pixels) {
 514        if (compressed) {
 515            if (intelImage->mt) {
 516                struct intel_region *dst = intelImage->mt->region;
 517                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 518                                0, 0,
 519                                intelImage->mt->level[level].width,
 520                                (intelImage->mt->level[level].height+3)/4,
 521                                pixels,
 522                                srcRowStride,
 523                                0, 0);
 524            } else
 525                memcpy(texImage->Data, pixels, imageSize);
 526        } else if (!texImage->TexFormat->StoreImage(ctx, dims,
 527                                                    texImage->_BaseFormat,
 528                                                    texImage->TexFormat,
 529                                                    texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 530                                                    dstRowStride,
 531                                                    texImage->ImageOffsets,
 532                                                    width, height, depth,
 533                                                    format, type, pixels, unpack)) {
 534            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 535        }
 536    }
 537
 538    _mesa_unmap_teximage_pbo(ctx, unpack);
 539
 540    if (intelImage->mt) {
 541       if (pixels != NULL)
 542          intel_miptree_image_unmap(intel, intelImage->mt);
 543       texImage->Data = NULL;
 544    }
 545
 546    UNLOCK_HARDWARE(intel);
 547
 548    /* GL_SGIS_generate_mipmap */
 549    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 550       intel_generate_mipmap(ctx, target, texObj);
 551    }
 552 }
 553
 554
 555 static void
 556 intelTexImage3D(GLcontext * ctx,
 557                 GLenum target, GLint level,
 558                 GLint internalFormat,
 559                 GLint width, GLint height, GLint depth,
 560                 GLint border,
 561                 GLenum format, GLenum type, const void *pixels,
 562                 const struct gl_pixelstore_attrib *unpack,
 563                 struct gl_texture_object *texObj,
 564                 struct gl_texture_image *texImage)
 565 {
 566    intelTexImage(ctx, 3, target, level,
 567                  internalFormat, width, height, depth, border,
 568                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 569 }
 570
 571
 572 static void
 573 intelTexImage2D(GLcontext * ctx,
 574                 GLenum target, GLint level,
 575                 GLint internalFormat,
 576                 GLint width, GLint height, GLint border,
 577                 GLenum format, GLenum type, const void *pixels,
 578                 const struct gl_pixelstore_attrib *unpack,
 579                 struct gl_texture_object *texObj,
 580                 struct gl_texture_image *texImage)
 581 {
 582    intelTexImage(ctx, 2, target, level,
 583                  internalFormat, width, height, 1, border,
 584                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 585 }
 586
 587
 588 static void
 589 intelTexImage1D(GLcontext * ctx,
 590                 GLenum target, GLint level,
 591                 GLint internalFormat,
 592                 GLint width, GLint border,
 593                 GLenum format, GLenum type, const void *pixels,
 594                 const struct gl_pixelstore_attrib *unpack,
 595                 struct gl_texture_object *texObj,
 596                 struct gl_texture_image *texImage)
 597 {
 598    intelTexImage(ctx, 1, target, level,
 599                  internalFormat, width, 1, 1, border,
 600                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 601 }
 602
 603
 604 static void
 605 intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 606                            GLint internalFormat,
 607                            GLint width, GLint height, GLint border,
 608                            GLsizei imageSize, const GLvoid *data,
 609                            struct gl_texture_object *texObj,
 610                            struct gl_texture_image *texImage )
 611 {
 612    intelTexImage(ctx, 2, target, level,
 613                  internalFormat, width, height, 1, border,
 614                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
 615 }
 616
 617
 618 /**
 619  * Need to map texture image into memory before copying image data,
 620  * then unmap it.
 621  */
 622 static void
 623 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 624                     GLenum format, GLenum type, GLvoid * pixels,
 625                     struct gl_texture_object *texObj,
 626                     struct gl_texture_image *texImage, GLboolean compressed)
 627 {
 628    struct intel_context *intel = intel_context(ctx);
 629    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 630
 631    /* If we're reading from a texture that has been rendered to, need to
 632     * make sure rendering is complete.
 633     * We could probably predicate this on texObj->_RenderToTexture
 634     */
 635    intelFlush(ctx);
 636
 637    /* Map */
 638    if (intelImage->mt) {
 639       /* Image is stored in hardware format in a buffer managed by the
 640        * kernel.  Need to explicitly map and unmap it.
 641        */
 642       intelImage->base.Data =
 643          intel_miptree_image_map(intel,
 644                                  intelImage->mt,
 645                                  intelImage->face,
 646                                  intelImage->level,
 647                                  &intelImage->base.RowStride,
 648                                  intelImage->base.ImageOffsets);
 649       intelImage->base.RowStride /= intelImage->mt->cpp;
 650    }
 651    else {
 652       /* Otherwise, the image should actually be stored in
 653        * intelImage->base.Data.  This is pretty confusing for
 654        * everybody, I'd much prefer to separate the two functions of
 655        * texImage->Data - storage for texture images in main memory
 656        * and access (ie mappings) of images.  In other words, we'd
 657        * create a new texImage->Map field and leave Data simply for
 658        * storage.
 659        */
 660       assert(intelImage->base.Data);
 661    }
 662
 663
 664    if (compressed) {
 665       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 666                                     texObj, texImage);
 667    } else {
 668       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 669                          texObj, texImage);
 670    }
 671
 672
 673    /* Unmap */
 674    if (intelImage->mt) {
 675       intel_miptree_image_unmap(intel, intelImage->mt);
 676       intelImage->base.Data = NULL;
 677    }
 678 }
 679
 680
 681 static void
 682 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 683                  GLenum format, GLenum type, GLvoid * pixels,
 684                  struct gl_texture_object *texObj,
 685                  struct gl_texture_image *texImage)
 686 {
 687    intel_get_tex_image(ctx, target, level, format, type, pixels,
 688                        texObj, texImage, GL_FALSE);
 689 }
 690
 691
 692 static void
 693 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 694                            GLvoid *pixels,
 695                            struct gl_texture_object *texObj,
 696                            struct gl_texture_image *texImage)
 697 {
 698    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 699                        texObj, texImage, GL_TRUE);
 700 }
 701
 702
 703 void
 704 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 705                   unsigned long long offset, GLint depth, GLuint pitch)
 706 {
 707    struct intel_context *intel = pDRICtx->driverPrivate;
 708    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 709    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 710
 711    if (!intelObj)
 712       return;
 713
 714    if (intelObj->mt)
 715       intel_miptree_release(intel, &intelObj->mt);
 716
 717    intelObj->imageOverride = GL_TRUE;
 718    intelObj->depthOverride = depth;
 719    intelObj->pitchOverride = pitch;
 720
 721    if (offset)
 722       intelObj->textureOffset = offset;
 723 }
 724
 725 void
 726 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 727                    GLint glx_texture_format,
 728                    __DRIdrawable *dPriv)
 729 {
 730    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 731    struct intel_context *intel = pDRICtx->driverPrivate;
 732    struct intel_texture_object *intelObj;
 733    struct intel_texture_image *intelImage;
 734    struct intel_mipmap_tree *mt;
 735    struct intel_renderbuffer *rb;
 736    struct gl_texture_unit *texUnit;
 737    struct gl_texture_object *texObj;
 738    struct gl_texture_image *texImage;
 739    int level = 0, type, format, internalFormat;
 740
 741    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 742    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 743    intelObj = intel_texture_object(texObj);
 744
 745    if (!intelObj)
 746       return;
 747
 748    intel_update_renderbuffers(pDRICtx, dPriv);
 749
 750    rb = intel_fb->color_rb[0];
 751    /* If the region isn't set, then intel_update_renderbuffers was unable
 752     * to get the buffers for the drawable.
 753     */
 754    if (rb->region == NULL)
 755       return;
 756
 757    type = GL_BGRA;
 758    format = GL_UNSIGNED_BYTE;
 759    if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
 760       internalFormat = GL_RGB;
 761    else
 762       internalFormat = GL_RGBA;
 763
 764    mt = intel_miptree_create_for_region(intel, target,
 765                                         internalFormat,
 766                                         0, 0, rb->region, 1, 0);
 767    if (mt == NULL)
 768        return;
 769
 770    _mesa_lock_texture(&intel->ctx, texObj);
 771
 772    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 773    intelImage = intel_texture_image(texImage);
 774
 775    if (intelImage->mt) {
 776       intel_miptree_release(intel, &intelImage->mt);
 777       assert(!texImage->Data);
 778    }
 779    if (intelObj->mt)
 780       intel_miptree_release(intel, &intelObj->mt);
 781
 782    intelObj->mt = mt;
 783    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 784                               rb->region->width, rb->region->height, 1,
 785                               0, internalFormat);
 786
 787    intelImage->face = target_to_face(target);
 788    intelImage->level = level;
 789    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 790                                                   type, format);
 791    _mesa_set_fetch_functions(texImage, 2);
 792    texImage->RowStride = rb->region->pitch;
 793    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 794
 795    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 796                                   intelImage->face, intelImage->level)) {
 797            fprintf(stderr, "miptree doesn't match image\n");
 798    }
 799
 800    _mesa_unlock_texture(&intel->ctx, texObj);
 801 }
 802
 803 void
 804 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 805 {
 806    /* The old interface didn't have the format argument, so copy our
 807     * implementation's behavior at the time.
 808     */
 809    intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 810 }
 811
 812
 813 void
 814 intelInitTextureImageFuncs(struct dd_function_table *functions)
 815 {
 816    functions->TexImage1D = intelTexImage1D;
 817    functions->TexImage2D = intelTexImage2D;
 818    functions->TexImage3D = intelTexImage3D;
 819    functions->GetTexImage = intelGetTexImage;
 820
 821    functions->CompressedTexImage2D = intelCompressedTexImage2D;
 822    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 823 }