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       _mesa_printf("%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
 252 static GLboolean
 253 try_pbo_zcopy(struct intel_context *intel,
 254               struct intel_texture_image *intelImage,
 255               const struct gl_pixelstore_attrib *unpack,
 256               GLint internalFormat,
 257               GLint width, GLint height,
 258               GLenum format, GLenum type, const void *pixels)
 259 {
 260    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 261    GLuint src_offset, src_stride;
 262    GLuint dst_offset, dst_stride;
 263
 264    if (!pbo ||
 265        intel->ctx._ImageTransferState ||
 266        unpack->SkipPixels || unpack->SkipRows) {
 267       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 268       return GL_FALSE;
 269    }
 270
 271    /* note: potential 64-bit ptr to 32-bit int cast */
 272    src_offset = (GLuint) (unsigned long) pixels;
 273
 274    if (unpack->RowLength > 0)
 275       src_stride = unpack->RowLength;
 276    else
 277       src_stride = width;
 278
 279    dst_offset = intel_miptree_image_offset(intelImage->mt,
 280                                            intelImage->face,
 281                                            intelImage->level);
 282
 283    dst_stride = intelImage->mt->pitch;
 284
 285    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 286       _mesa_printf("%s: failure 2\n", __FUNCTION__);
 287       return GL_FALSE;
 288    }
 289
 290    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 291
 292    return GL_TRUE;
 293 }
 294
 295
 296
 297
 298
 299
 300 static void
 301 intelTexImage(GLcontext * ctx,
 302               GLint dims,
 303               GLenum target, GLint level,
 304               GLint internalFormat,
 305               GLint width, GLint height, GLint depth,
 306               GLint border,
 307               GLenum format, GLenum type, const void *pixels,
 308               const struct gl_pixelstore_attrib *unpack,
 309               struct gl_texture_object *texObj,
 310               struct gl_texture_image *texImage, GLsizei imageSize, int 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, srcRowStride = texImage->RowStride;
 319
 320
 321    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 322        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 323
 324    intelFlush(ctx);
 325
 326    intelImage->face = target_to_face(target);
 327    intelImage->level = level;
 328
 329    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 330       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 331                                          &postConvHeight);
 332    }
 333
 334    /* choose the texture format */
 335    texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
 336                                                   format, type);
 337
 338    _mesa_set_fetch_functions(texImage, dims);
 339
 340    if (texImage->TexFormat->TexelBytes == 0) {
 341       /* must be a compressed format */
 342       texelBytes = 0;
 343       texImage->IsCompressed = GL_TRUE;
 344       texImage->CompressedSize =
 345          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 346                                            texImage->Height, texImage->Depth,
 347                                            texImage->TexFormat->MesaFormat);
 348    } else {
 349       texelBytes = texImage->TexFormat->TexelBytes;
 350
 351       /* Minimum pitch of 32 bytes */
 352       if (postConvWidth * texelBytes < 32) {
 353          postConvWidth = 32 / texelBytes;
 354          texImage->RowStride = postConvWidth;
 355       }
 356
 357       if (!intelImage->mt) {
 358           assert(texImage->RowStride == postConvWidth);
 359       }
 360    }
 361
 362    /* Release the reference to a potentially orphaned buffer.
 363     * Release any old malloced memory.
 364     */
 365    if (intelImage->mt) {
 366       intel_miptree_release(intel, &intelImage->mt);
 367       assert(!texImage->Data);
 368    }
 369    else if (texImage->Data) {
 370       _mesa_free_texmemory(texImage->Data);
 371       texImage->Data = NULL;
 372    }
 373
 374    /* If this is the only texture image in the tree, could call
 375     * bmBufferData with NULL data to free the old block and avoid
 376     * waiting on any outstanding fences.
 377     */
 378    if (intelObj->mt &&
 379        intelObj->mt->first_level == level &&
 380        intelObj->mt->last_level == level &&
 381        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 382        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 383                                   intelImage->face, intelImage->level)) {
 384
 385       DBG("release it\n");
 386       intel_miptree_release(intel, &intelObj->mt);
 387       assert(!intelObj->mt);
 388    }
 389
 390    if (!intelObj->mt) {
 391       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
 392       if (!intelObj->mt) {
 393          DBG("guess_and_alloc_mipmap_tree: failed\n");
 394       }
 395    }
 396
 397    assert(!intelImage->mt);
 398
 399    if (intelObj->mt &&
 400        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 401                                  intelImage->face, intelImage->level)) {
 402
 403       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 404       assert(intelImage->mt);
 405    } else if (intelImage->base.Border == 0) {
 406       int comp_byte = 0;
 407
 408       if (intelImage->base.IsCompressed) {
 409          comp_byte =
 410             intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 411       }
 412
 413       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 414        * a miptree, so create one just for our level and store it in the image.
 415        * It'll get moved into the object miptree at validate time.
 416        */
 417       intelImage->mt = intel_miptree_create(intel, target, internalFormat,
 418                                             level, level,
 419                                             width, height, depth,
 420                                             intelImage->base.TexFormat->TexelBytes,
 421                                             comp_byte, pixels == NULL);
 422
 423    }
 424
 425    /* PBO fastpaths:
 426     */
 427    if (dims <= 2 &&
 428        intelImage->mt &&
 429        intel_buffer_object(unpack->BufferObj) &&
 430        check_pbo_format(internalFormat, format,
 431                         type, intelImage->base.TexFormat)) {
 432
 433       DBG("trying pbo upload\n");
 434
 435       /* Attempt to texture directly from PBO data (zero copy upload).
 436        *
 437        * Currently disable as it can lead to worse as well as better
 438        * performance (in particular when intel_region_cow() is
 439        * required).
 440        */
 441       if (intelObj->mt == intelImage->mt &&
 442           intelObj->mt->first_level == level &&
 443           intelObj->mt->last_level == level) {
 444
 445          if (try_pbo_zcopy(intel, intelImage, unpack,
 446                            internalFormat,
 447                            width, height, format, type, pixels)) {
 448
 449             DBG("pbo zcopy upload succeeded\n");
 450             return;
 451          }
 452       }
 453
 454
 455       /* Otherwise, attempt to use the blitter for PBO image uploads.
 456        */
 457       if (try_pbo_upload(intel, intelImage, unpack,
 458                          internalFormat,
 459                          width, height, format, type, pixels)) {
 460          DBG("pbo upload succeeded\n");
 461          return;
 462       }
 463
 464       DBG("pbo upload failed\n");
 465    }
 466
 467
 468
 469    /* intelCopyTexImage calls this function with pixels == NULL, with
 470     * the expectation that the mipmap tree will be set up but nothing
 471     * more will be done.  This is where those calls return:
 472     */
 473    if (compressed) {
 474       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 475                                                       unpack,
 476                                                       "glCompressedTexImage");
 477    } else {
 478       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 479                                            format, type,
 480                                            pixels, unpack, "glTexImage");
 481    }
 482
 483    LOCK_HARDWARE(intel);
 484
 485    if (intelImage->mt) {
 486       if (pixels)
 487          texImage->Data = intel_miptree_image_map(intel,
 488                                                   intelImage->mt,
 489                                                   intelImage->face,
 490                                                   intelImage->level,
 491                                                   &dstRowStride,
 492                                                   intelImage->base.ImageOffsets);
 493       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 494    }
 495    else {
 496       /* Allocate regular memory and store the image there temporarily.   */
 497       if (texImage->IsCompressed) {
 498          sizeInBytes = texImage->CompressedSize;
 499          dstRowStride =
 500             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 501          assert(dims != 3);
 502       }
 503       else {
 504          dstRowStride = postConvWidth * texelBytes;
 505          sizeInBytes = depth * dstRowStride * postConvHeight;
 506       }
 507
 508       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 509    }
 510
 511    DBG("Upload image %dx%dx%d row_len %d "
 512        "pitch %d\n",
 513        width, height, depth, width * texelBytes, dstRowStride);
 514
 515    /* Copy data.  Would like to know when it's ok for us to eg. use
 516     * the blitter to copy.  Or, use the hardware to do the format
 517     * conversion and copy:
 518     */
 519    if (pixels) {
 520        if (compressed) {
 521            if (intelImage->mt) {
 522                struct intel_region *dst = intelImage->mt->region;
 523                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 524                                0, 0,
 525                                intelImage->mt->level[level].width,
 526                                intelImage->mt->level[level].height/4,
 527                                pixels,
 528                                srcRowStride,
 529                                0, 0);
 530            } else
 531                memcpy(texImage->Data, pixels, imageSize);
 532        } else if (!texImage->TexFormat->StoreImage(ctx, dims,
 533                                                    texImage->_BaseFormat,
 534                                                    texImage->TexFormat,
 535                                                    texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 536                                                    dstRowStride,
 537                                                    texImage->ImageOffsets,
 538                                                    width, height, depth,
 539                                                    format, type, pixels, unpack)) {
 540            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 541        }
 542
 543        /* GL_SGIS_generate_mipmap */
 544        if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 545           intel_generate_mipmap(ctx, target, texObj);
 546        }
 547    }
 548
 549    _mesa_unmap_teximage_pbo(ctx, unpack);
 550
 551    if (intelImage->mt) {
 552       if (pixels)
 553          intel_miptree_image_unmap(intel, intelImage->mt);
 554       texImage->Data = NULL;
 555    }
 556
 557    UNLOCK_HARDWARE(intel);
 558 }
 559
 560 void
 561 intelTexImage3D(GLcontext * ctx,
 562                 GLenum target, GLint level,
 563                 GLint internalFormat,
 564                 GLint width, GLint height, GLint depth,
 565                 GLint border,
 566                 GLenum format, GLenum type, const void *pixels,
 567                 const struct gl_pixelstore_attrib *unpack,
 568                 struct gl_texture_object *texObj,
 569                 struct gl_texture_image *texImage)
 570 {
 571    intelTexImage(ctx, 3, target, level,
 572                  internalFormat, width, height, depth, border,
 573                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 574 }
 575
 576
 577 void
 578 intelTexImage2D(GLcontext * ctx,
 579                 GLenum target, GLint level,
 580                 GLint internalFormat,
 581                 GLint width, GLint height, GLint border,
 582                 GLenum format, GLenum type, const void *pixels,
 583                 const struct gl_pixelstore_attrib *unpack,
 584                 struct gl_texture_object *texObj,
 585                 struct gl_texture_image *texImage)
 586 {
 587    intelTexImage(ctx, 2, target, level,
 588                  internalFormat, width, height, 1, border,
 589                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 590 }
 591
 592 void
 593 intelTexImage1D(GLcontext * ctx,
 594                 GLenum target, GLint level,
 595                 GLint internalFormat,
 596                 GLint width, GLint border,
 597                 GLenum format, GLenum type, const void *pixels,
 598                 const struct gl_pixelstore_attrib *unpack,
 599                 struct gl_texture_object *texObj,
 600                 struct gl_texture_image *texImage)
 601 {
 602    intelTexImage(ctx, 1, target, level,
 603                  internalFormat, width, 1, 1, border,
 604                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 605 }
 606
 607 void 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, 1);
 617 }
 618
 619 /**
 620  * Need to map texture image into memory before copying image data,
 621  * then unmap it.
 622  */
 623 static void
 624 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 625                     GLenum format, GLenum type, GLvoid * pixels,
 626                     struct gl_texture_object *texObj,
 627                     struct gl_texture_image *texImage, int compressed)
 628 {
 629    struct intel_context *intel = intel_context(ctx);
 630    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 631
 632    /* Map */
 633    if (intelImage->mt) {
 634       /* Image is stored in hardware format in a buffer managed by the
 635        * kernel.  Need to explicitly map and unmap it.
 636        */
 637       intelImage->base.Data =
 638          intel_miptree_image_map(intel,
 639                                  intelImage->mt,
 640                                  intelImage->face,
 641                                  intelImage->level,
 642                                  &intelImage->base.RowStride,
 643                                  intelImage->base.ImageOffsets);
 644       intelImage->base.RowStride /= intelImage->mt->cpp;
 645    }
 646    else {
 647       /* Otherwise, the image should actually be stored in
 648        * intelImage->base.Data.  This is pretty confusing for
 649        * everybody, I'd much prefer to separate the two functions of
 650        * texImage->Data - storage for texture images in main memory
 651        * and access (ie mappings) of images.  In other words, we'd
 652        * create a new texImage->Map field and leave Data simply for
 653        * storage.
 654        */
 655       assert(intelImage->base.Data);
 656    }
 657
 658
 659    if (compressed) {
 660       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 661                                     texObj, texImage);
 662    } else {
 663       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 664                          texObj, texImage);
 665    }
 666
 667
 668    /* Unmap */
 669    if (intelImage->mt) {
 670       intel_miptree_image_unmap(intel, intelImage->mt);
 671       intelImage->base.Data = NULL;
 672    }
 673 }
 674
 675 void
 676 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 677                  GLenum format, GLenum type, GLvoid * pixels,
 678                  struct gl_texture_object *texObj,
 679                  struct gl_texture_image *texImage)
 680 {
 681    intel_get_tex_image(ctx, target, level, format, type, pixels,
 682                        texObj, texImage, 0);
 683
 684
 685 }
 686
 687 void
 688 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 689                            GLvoid *pixels,
 690                            struct gl_texture_object *texObj,
 691                            struct gl_texture_image *texImage)
 692 {
 693    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 694                        texObj, texImage, 1);
 695 }
 696
 697 void
 698 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 699                   unsigned long long offset, GLint depth, GLuint pitch)
 700 {
 701    struct intel_context *intel = pDRICtx->driverPrivate;
 702    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 703    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 704
 705    if (!intelObj)
 706       return;
 707
 708    if (intelObj->mt)
 709       intel_miptree_release(intel, &intelObj->mt);
 710
 711    intelObj->imageOverride = GL_TRUE;
 712    intelObj->depthOverride = depth;
 713    intelObj->pitchOverride = pitch;
 714
 715    if (offset)
 716       intelObj->textureOffset = offset;
 717 }
 718
 719 void
 720 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 721                    GLint glx_texture_format,
 722                    __DRIdrawable *dPriv)
 723 {
 724    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 725    struct intel_context *intel = pDRICtx->driverPrivate;
 726    struct intel_texture_object *intelObj;
 727    struct intel_texture_image *intelImage;
 728    struct intel_mipmap_tree *mt;
 729    struct intel_renderbuffer *rb;
 730    struct gl_texture_unit *texUnit;
 731    struct gl_texture_object *texObj;
 732    struct gl_texture_image *texImage;
 733    int level = 0, type, format, internalFormat;
 734
 735    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 736    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 737    intelObj = intel_texture_object(texObj);
 738
 739    if (!intelObj)
 740       return;
 741
 742    intel_update_renderbuffers(pDRICtx, dPriv);
 743
 744    rb = intel_fb->color_rb[0];
 745    /* If the region isn't set, then intel_update_renderbuffers was unable
 746     * to get the buffers for the drawable.
 747     */
 748    if (rb->region == NULL)
 749       return;
 750
 751    type = GL_BGRA;
 752    format = GL_UNSIGNED_BYTE;
 753    if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
 754       internalFormat = GL_RGB;
 755    else
 756       internalFormat = GL_RGBA;
 757
 758    mt = intel_miptree_create_for_region(intel, target,
 759                                         internalFormat,
 760                                         0, 0, rb->region, 1, 0);
 761    if (mt == NULL)
 762        return;
 763
 764    _mesa_lock_texture(&intel->ctx, texObj);
 765
 766    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 767    intelImage = intel_texture_image(texImage);
 768
 769    if (intelImage->mt) {
 770       intel_miptree_release(intel, &intelImage->mt);
 771       assert(!texImage->Data);
 772    }
 773    if (intelObj->mt)
 774       intel_miptree_release(intel, &intelObj->mt);
 775
 776    intelObj->mt = mt;
 777    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 778                               rb->region->width, rb->region->height, 1,
 779                               0, internalFormat);
 780
 781    intelImage->face = target_to_face(target);
 782    intelImage->level = level;
 783    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 784                                                   type, format);
 785    _mesa_set_fetch_functions(texImage, 2);
 786    texImage->RowStride = rb->region->pitch;
 787    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 788
 789    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 790                                   intelImage->face, intelImage->level)) {
 791            fprintf(stderr, "miptree doesn't match image\n");
 792    }
 793
 794    _mesa_unlock_texture(&intel->ctx, texObj);
 795 }
 796
 797 void
 798 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 799 {
 800    /* The old interface didn't have the format argument, so copy our
 801     * implementation's behavior at the time.
 802     */
 803    intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 804 }