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/texobj.h"
  16 #include "main/texstore.h"
  17 #include "main/teximage.h"
  18
  19 #include "intel_context.h"
  20 #include "intel_mipmap_tree.h"
  21 #include "intel_buffer_objects.h"
  22 #include "intel_batchbuffer.h"
  23 #include "intel_tex.h"
  24 #include "intel_blit.h"
  25 #include "intel_fbo.h"
  26
  27 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  28
  29 /* Functions to store texture images.  Where possible, mipmap_tree's
  30  * will be created or further instantiated with image data, otherwise
  31  * images will be stored in malloc'd memory.  A validation step is
  32  * required to pull those images into a mipmap tree, or otherwise
  33  * decide a fallback is required.
  34  */
  35
  36
  37 static int
  38 logbase2(int n)
  39 {
  40    GLint i = 1;
  41    GLint log2 = 0;
  42
  43    while (n > i) {
  44       i *= 2;
  45       log2++;
  46    }
  47
  48    return log2;
  49 }
  50
  51
  52 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
  53  * 1).
  54  *
  55  * Otherwise, if max_level >= level >= min_level, create tree with
  56  * space for textures from min_level down to max_level.
  57  *
  58  * Otherwise, create tree with space for textures from (level
  59  * 0)..(1x1).  Consider pruning this tree at a validation if the
  60  * saving is worth it.
  61  */
  62 static void
  63 guess_and_alloc_mipmap_tree(struct intel_context *intel,
  64                             struct intel_texture_object *intelObj,
  65                             struct intel_texture_image *intelImage)
  66 {
  67    GLuint firstLevel;
  68    GLuint lastLevel;
  69    GLuint width = intelImage->base.Width;
  70    GLuint height = intelImage->base.Height;
  71    GLuint depth = intelImage->base.Depth;
  72    GLuint l2width, l2height, l2depth;
  73    GLuint i, comp_byte = 0;
  74
  75    DBG("%s\n", __FUNCTION__);
  76
  77    if (intelImage->base.Border ||
  78        ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
  79         ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
  80          (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
  81       return;
  82
  83    if (intelImage->level > intelObj->base.BaseLevel &&
  84        (intelImage->base.Width == 1 ||
  85         (intelObj->base.Target != GL_TEXTURE_1D &&
  86          intelImage->base.Height == 1) ||
  87         (intelObj->base.Target == GL_TEXTURE_3D &&
  88          intelImage->base.Depth == 1)))
  89       return;
  90
  91    /* If this image disrespects BaseLevel, allocate from level zero.
  92     * Usually BaseLevel == 0, so it's unlikely to happen.
  93     */
  94    if (intelImage->level < intelObj->base.BaseLevel)
  95       firstLevel = 0;
  96    else
  97       firstLevel = intelObj->base.BaseLevel;
  98
  99
 100    /* Figure out image dimensions at start level.
 101     */
 102    for (i = intelImage->level; i > firstLevel; i--) {
 103       width <<= 1;
 104       if (height != 1)
 105          height <<= 1;
 106       if (depth != 1)
 107          depth <<= 1;
 108    }
 109
 110    /* Guess a reasonable value for lastLevel.  This is probably going
 111     * to be wrong fairly often and might mean that we have to look at
 112     * resizable buffers, or require that buffers implement lazy
 113     * pagetable arrangements.
 114     */
 115    if ((intelObj->base.MinFilter == GL_NEAREST ||
 116         intelObj->base.MinFilter == GL_LINEAR) &&
 117        intelImage->level == firstLevel) {
 118       lastLevel = firstLevel;
 119    }
 120    else {
 121       l2width = logbase2(width);
 122       l2height = logbase2(height);
 123       l2depth = logbase2(depth);
 124       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 125    }
 126
 127    assert(!intelObj->mt);
 128    if (intelImage->base.IsCompressed)
 129       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 130    intelObj->mt = intel_miptree_create(intel,
 131                                        intelObj->base.Target,
 132                                        intelImage->base.InternalFormat,
 133                                        firstLevel,
 134                                        lastLevel,
 135                                        width,
 136                                        height,
 137                                        depth,
 138                                        intelImage->base.TexFormat->TexelBytes,
 139                                        comp_byte);
 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 (!pbo ||
 206        intel->ctx._ImageTransferState ||
 207        unpack->SkipPixels || unpack->SkipRows) {
 208       _mesa_printf("%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       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    }
 242    UNLOCK_HARDWARE(intel);
 243
 244    return GL_TRUE;
 245 }
 246
 247
 248
 249 static GLboolean
 250 try_pbo_zcopy(struct intel_context *intel,
 251               struct intel_texture_image *intelImage,
 252               const struct gl_pixelstore_attrib *unpack,
 253               GLint internalFormat,
 254               GLint width, GLint height,
 255               GLenum format, GLenum type, const void *pixels)
 256 {
 257    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 258    GLuint src_offset, src_stride;
 259    GLuint dst_offset, dst_stride;
 260
 261    if (!pbo ||
 262        intel->ctx._ImageTransferState ||
 263        unpack->SkipPixels || unpack->SkipRows) {
 264       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 265       return GL_FALSE;
 266    }
 267
 268    /* note: potential 64-bit ptr to 32-bit int cast */
 269    src_offset = (GLuint) (unsigned long) pixels;
 270
 271    if (unpack->RowLength > 0)
 272       src_stride = unpack->RowLength;
 273    else
 274       src_stride = width;
 275
 276    dst_offset = intel_miptree_image_offset(intelImage->mt,
 277                                            intelImage->face,
 278                                            intelImage->level);
 279
 280    dst_stride = intelImage->mt->pitch;
 281
 282    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 283       _mesa_printf("%s: failure 2\n", __FUNCTION__);
 284       return GL_FALSE;
 285    }
 286
 287    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 288
 289    return GL_TRUE;
 290 }
 291
 292
 293
 294
 295
 296
 297 static void
 298 intelTexImage(GLcontext * ctx,
 299               GLint dims,
 300               GLenum target, GLint level,
 301               GLint internalFormat,
 302               GLint width, GLint height, GLint depth,
 303               GLint border,
 304               GLenum format, GLenum type, const void *pixels,
 305               const struct gl_pixelstore_attrib *unpack,
 306               struct gl_texture_object *texObj,
 307               struct gl_texture_image *texImage, GLsizei imageSize, int compressed)
 308 {
 309    struct intel_context *intel = intel_context(ctx);
 310    struct intel_texture_object *intelObj = intel_texture_object(texObj);
 311    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 312    GLint postConvWidth = width;
 313    GLint postConvHeight = height;
 314    GLint texelBytes, sizeInBytes;
 315    GLuint dstRowStride, srcRowStride = texImage->RowStride;
 316
 317
 318    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 319        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 320
 321    intelFlush(ctx);
 322
 323    intelImage->face = target_to_face(target);
 324    intelImage->level = level;
 325
 326    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 327       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 328                                          &postConvHeight);
 329    }
 330
 331    /* choose the texture format */
 332    texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
 333                                                   format, type);
 334
 335    _mesa_set_fetch_functions(texImage, dims);
 336
 337    if (texImage->TexFormat->TexelBytes == 0) {
 338       /* must be a compressed format */
 339       texelBytes = 0;
 340       texImage->IsCompressed = GL_TRUE;
 341       texImage->CompressedSize =
 342          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 343                                            texImage->Height, texImage->Depth,
 344                                            texImage->TexFormat->MesaFormat);
 345    } else {
 346       texelBytes = texImage->TexFormat->TexelBytes;
 347
 348       /* Minimum pitch of 32 bytes */
 349       if (postConvWidth * texelBytes < 32) {
 350          postConvWidth = 32 / texelBytes;
 351          texImage->RowStride = postConvWidth;
 352       }
 353
 354       if (!intelImage->mt) {
 355           assert(texImage->RowStride == postConvWidth);
 356       }
 357    }
 358
 359    /* Release the reference to a potentially orphaned buffer.
 360     * Release any old malloced memory.
 361     */
 362    if (intelImage->mt) {
 363       intel_miptree_release(intel, &intelImage->mt);
 364       assert(!texImage->Data);
 365    }
 366    else if (texImage->Data) {
 367       _mesa_free_texmemory(texImage->Data);
 368       texImage->Data = NULL;
 369    }
 370
 371    /* If this is the only texture image in the tree, could call
 372     * bmBufferData with NULL data to free the old block and avoid
 373     * waiting on any outstanding fences.
 374     */
 375    if (intelObj->mt &&
 376        intelObj->mt->first_level == level &&
 377        intelObj->mt->last_level == level &&
 378        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 379        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 380                                   intelImage->face, intelImage->level)) {
 381
 382       DBG("release it\n");
 383       intel_miptree_release(intel, &intelObj->mt);
 384       assert(!intelObj->mt);
 385    }
 386
 387    if (!intelObj->mt) {
 388       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage);
 389       if (!intelObj->mt) {
 390          DBG("guess_and_alloc_mipmap_tree: failed\n");
 391       }
 392    }
 393
 394    assert(!intelImage->mt);
 395
 396    if (intelObj->mt &&
 397        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 398                                  intelImage->face, intelImage->level)) {
 399
 400       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 401       assert(intelImage->mt);
 402    } else if (intelImage->base.Border == 0) {
 403       int comp_byte = 0;
 404
 405       if (intelImage->base.IsCompressed) {
 406          comp_byte =
 407             intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 408       }
 409
 410       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 411        * a miptree, so create one just for our level and store it in the image.
 412        * It'll get moved into the object miptree at validate time.
 413        */
 414       intelImage->mt = intel_miptree_create(intel, target, internalFormat,
 415                                             level, level,
 416                                             width, height, depth,
 417                                             intelImage->base.TexFormat->TexelBytes,
 418                                             comp_byte);
 419
 420    }
 421
 422    /* PBO fastpaths:
 423     */
 424    if (dims <= 2 &&
 425        intelImage->mt &&
 426        intel_buffer_object(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
 465
 466    /* intelCopyTexImage calls this function with pixels == NULL, with
 467     * the expectation that the mipmap tree will be set up but nothing
 468     * more will be done.  This is where those calls return:
 469     */
 470    if (compressed) {
 471       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 472                                                       unpack,
 473                                                       "glCompressedTexImage");
 474    } else {
 475       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 476                                            format, type,
 477                                            pixels, unpack, "glTexImage");
 478    }
 479
 480    LOCK_HARDWARE(intel);
 481
 482    if (intelImage->mt) {
 483       texImage->Data = intel_miptree_image_map(intel,
 484                                                intelImage->mt,
 485                                                intelImage->face,
 486                                                intelImage->level,
 487                                                &dstRowStride,
 488                                                intelImage->base.ImageOffsets);
 489       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 490    }
 491    else {
 492       /* Allocate regular memory and store the image there temporarily.   */
 493       if (texImage->IsCompressed) {
 494          sizeInBytes = texImage->CompressedSize;
 495          dstRowStride =
 496             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 497          assert(dims != 3);
 498       }
 499       else {
 500          dstRowStride = postConvWidth * texelBytes;
 501          sizeInBytes = depth * dstRowStride * postConvHeight;
 502       }
 503
 504       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 505    }
 506
 507    DBG("Upload image %dx%dx%d row_len %d "
 508        "pitch %d\n",
 509        width, height, depth, width * texelBytes, dstRowStride);
 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/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    /* GL_SGIS_generate_mipmap */
 541    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 542       intel_generate_mipmap(ctx, target, texObj);
 543    }
 544
 545    _mesa_unmap_teximage_pbo(ctx, unpack);
 546
 547    if (intelImage->mt) {
 548       intel_miptree_image_unmap(intel, intelImage->mt);
 549       texImage->Data = NULL;
 550    }
 551
 552    UNLOCK_HARDWARE(intel);
 553 }
 554
 555 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, 0);
 569 }
 570
 571
 572 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, 0);
 585 }
 586
 587 void
 588 intelTexImage1D(GLcontext * ctx,
 589                 GLenum target, GLint level,
 590                 GLint internalFormat,
 591                 GLint width, GLint border,
 592                 GLenum format, GLenum type, const void *pixels,
 593                 const struct gl_pixelstore_attrib *unpack,
 594                 struct gl_texture_object *texObj,
 595                 struct gl_texture_image *texImage)
 596 {
 597    intelTexImage(ctx, 1, target, level,
 598                  internalFormat, width, 1, 1, border,
 599                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 600 }
 601
 602 void 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, 1);
 612 }
 613
 614 /**
 615  * Need to map texture image into memory before copying image data,
 616  * then unmap it.
 617  */
 618 static void
 619 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 620                     GLenum format, GLenum type, GLvoid * pixels,
 621                     struct gl_texture_object *texObj,
 622                     struct gl_texture_image *texImage, int compressed)
 623 {
 624    struct intel_context *intel = intel_context(ctx);
 625    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 626
 627    /* Map */
 628    if (intelImage->mt) {
 629       /* Image is stored in hardware format in a buffer managed by the
 630        * kernel.  Need to explicitly map and unmap it.
 631        */
 632       intelImage->base.Data =
 633          intel_miptree_image_map(intel,
 634                                  intelImage->mt,
 635                                  intelImage->face,
 636                                  intelImage->level,
 637                                  &intelImage->base.RowStride,
 638                                  intelImage->base.ImageOffsets);
 639       intelImage->base.RowStride /= intelImage->mt->cpp;
 640    }
 641    else {
 642       /* Otherwise, the image should actually be stored in
 643        * intelImage->base.Data.  This is pretty confusing for
 644        * everybody, I'd much prefer to separate the two functions of
 645        * texImage->Data - storage for texture images in main memory
 646        * and access (ie mappings) of images.  In other words, we'd
 647        * create a new texImage->Map field and leave Data simply for
 648        * storage.
 649        */
 650       assert(intelImage->base.Data);
 651    }
 652
 653
 654    if (compressed) {
 655       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 656                                     texObj, texImage);
 657    } else {
 658       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 659                          texObj, texImage);
 660    }
 661
 662
 663    /* Unmap */
 664    if (intelImage->mt) {
 665       intel_miptree_image_unmap(intel, intelImage->mt);
 666       intelImage->base.Data = NULL;
 667    }
 668 }
 669
 670 void
 671 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 672                  GLenum format, GLenum type, GLvoid * pixels,
 673                  struct gl_texture_object *texObj,
 674                  struct gl_texture_image *texImage)
 675 {
 676    intel_get_tex_image(ctx, target, level, format, type, pixels,
 677                        texObj, texImage, 0);
 678
 679
 680 }
 681
 682 void
 683 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 684                            GLvoid *pixels,
 685                            struct gl_texture_object *texObj,
 686                            struct gl_texture_image *texImage)
 687 {
 688    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 689                        texObj, texImage, 1);
 690 }
 691
 692 void
 693 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 694                   unsigned long long offset, GLint depth, GLuint pitch)
 695 {
 696    struct intel_context *intel = pDRICtx->driverPrivate;
 697    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 698    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 699
 700    if (!intelObj)
 701       return;
 702
 703    if (intelObj->mt)
 704       intel_miptree_release(intel, &intelObj->mt);
 705
 706    intelObj->imageOverride = GL_TRUE;
 707    intelObj->depthOverride = depth;
 708    intelObj->pitchOverride = pitch;
 709
 710    if (offset)
 711       intelObj->textureOffset = offset;
 712 }
 713
 714 void
 715 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 716 {
 717    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 718    struct intel_context *intel = pDRICtx->driverPrivate;
 719    struct intel_texture_object *intelObj;
 720    struct intel_texture_image *intelImage;
 721    struct intel_mipmap_tree *mt;
 722    struct intel_renderbuffer *rb;
 723    struct gl_texture_unit *texUnit;
 724    struct gl_texture_object *texObj;
 725    struct gl_texture_image *texImage;
 726    int level = 0, type, format, internalFormat;
 727
 728    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 729    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 730    intelObj = intel_texture_object(texObj);
 731
 732    if (!intelObj)
 733       return;
 734
 735    intel_update_renderbuffers(pDRICtx, dPriv);
 736
 737    rb = intel_fb->color_rb[0];
 738    /* If the region isn't set, then intel_update_renderbuffers was unable
 739     * to get the buffers for the drawable.
 740     */
 741    if (rb->region == NULL)
 742       return;
 743
 744    type = GL_BGRA;
 745    format = GL_UNSIGNED_BYTE;
 746    internalFormat = (rb->region->cpp == 3 ? 3 : 4);
 747
 748    mt = intel_miptree_create_for_region(intel, target,
 749                                         internalFormat,
 750                                         0, 0, rb->region, 1, 0);
 751    if (mt == NULL)
 752        return;
 753
 754    _mesa_lock_texture(&intel->ctx, texObj);
 755
 756    if (intelObj->mt)
 757       intel_miptree_release(intel, &intelObj->mt);
 758
 759    intelObj->mt = mt;
 760    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 761    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 762                               rb->region->width, rb->region->height, 1,
 763                               0, internalFormat);
 764
 765    intelImage = intel_texture_image(texImage);
 766    intelImage->face = target_to_face(target);
 767    intelImage->level = level;
 768    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 769                                                   type, format);
 770    _mesa_set_fetch_functions(texImage, 2);
 771    texImage->RowStride = rb->region->pitch;
 772    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 773
 774    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 775                                   intelImage->face, intelImage->level)) {
 776            fprintf(stderr, "miptree doesn't match image\n");
 777    }
 778
 779    _mesa_unlock_texture(&intel->ctx, texObj);
 780 }