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

   1
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4
   5 #include "glheader.h"
   6 #include "macros.h"
   7 #include "mtypes.h"
   8 #include "enums.h"
   9 #include "colortab.h"
  10 #include "convolve.h"
  11 #include "context.h"
  12 #include "simple_list.h"
  13 #include "texcompress.h"
  14 #include "texformat.h"
  15 #include "texobj.h"
  16 #include "texstore.h"
  17 #include "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_ioctl.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 {
  68    GLuint firstLevel;
  69    GLuint lastLevel;
  70    GLuint width = intelImage->base.Width;
  71    GLuint height = intelImage->base.Height;
  72    GLuint depth = intelImage->base.Depth;
  73    GLuint l2width, l2height, l2depth;
  74    GLuint i, comp_byte = 0;
  75
  76    DBG("%s\n", __FUNCTION__);
  77
  78    if (intelImage->base.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.InternalFormat,
 131                                        firstLevel,
 132                                        lastLevel,
 133                                        width,
 134                                        height,
 135                                        depth,
 136                                        intelImage->base.TexFormat->TexelBytes,
 137                                        comp_byte);
 138
 139    DBG("%s - success\n", __FUNCTION__);
 140 }
 141
 142
 143
 144
 145 static GLuint
 146 target_to_face(GLenum target)
 147 {
 148    switch (target) {
 149    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 150    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 151    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 152    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 153    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 154    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 155       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 156    default:
 157       return 0;
 158    }
 159 }
 160
 161 /* There are actually quite a few combinations this will work for,
 162  * more than what I've listed here.
 163  */
 164 static GLboolean
 165 check_pbo_format(GLint internalFormat,
 166                  GLenum format, GLenum type,
 167                  const struct gl_texture_format *mesa_format)
 168 {
 169    switch (internalFormat) {
 170    case 4:
 171    case GL_RGBA:
 172       return (format == GL_BGRA &&
 173               (type == GL_UNSIGNED_BYTE ||
 174                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 175               mesa_format == &_mesa_texformat_argb8888);
 176    case 3:
 177    case GL_RGB:
 178       return (format == GL_RGB &&
 179               type == GL_UNSIGNED_SHORT_5_6_5 &&
 180               mesa_format == &_mesa_texformat_rgb565);
 181    case GL_YCBCR_MESA:
 182       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 183    default:
 184       return GL_FALSE;
 185    }
 186 }
 187
 188
 189 /* XXX: Do this for TexSubImage also:
 190  */
 191 static GLboolean
 192 try_pbo_upload(struct intel_context *intel,
 193                struct intel_texture_image *intelImage,
 194                const struct gl_pixelstore_attrib *unpack,
 195                GLint internalFormat,
 196                GLint width, GLint height,
 197                GLenum format, GLenum type, const void *pixels)
 198 {
 199    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 200    GLuint src_offset, src_stride;
 201    GLuint dst_offset, dst_stride;
 202
 203    if (!pbo ||
 204        intel->ctx._ImageTransferState ||
 205        unpack->SkipPixels || unpack->SkipRows) {
 206       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 207       return GL_FALSE;
 208    }
 209
 210    src_offset = (GLuint) pixels;
 211
 212    if (unpack->RowLength > 0)
 213       src_stride = unpack->RowLength;
 214    else
 215       src_stride = width;
 216
 217    dst_offset = intel_miptree_image_offset(intelImage->mt,
 218                                            intelImage->face,
 219                                            intelImage->level);
 220
 221    dst_stride = intelImage->mt->pitch;
 222
 223    intelFlush(&intel->ctx);
 224    LOCK_HARDWARE(intel);
 225    {
 226       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 227       dri_bo *dst_buffer = intel_region_buffer(intel,
 228                                                intelImage->mt->region,
 229                                                INTEL_WRITE_FULL);
 230
 231
 232       intelEmitCopyBlit(intel,
 233                         intelImage->mt->cpp,
 234                         src_stride, src_buffer, src_offset, GL_FALSE,
 235                         dst_stride, dst_buffer, dst_offset, GL_FALSE,
 236                         0, 0, 0, 0, width, height,
 237                         GL_COPY);
 238
 239       intel_batchbuffer_flush(intel->batch);
 240    }
 241    UNLOCK_HARDWARE(intel);
 242
 243    return GL_TRUE;
 244 }
 245
 246
 247
 248 static GLboolean
 249 try_pbo_zcopy(struct intel_context *intel,
 250               struct intel_texture_image *intelImage,
 251               const struct gl_pixelstore_attrib *unpack,
 252               GLint internalFormat,
 253               GLint width, GLint height,
 254               GLenum format, GLenum type, const void *pixels)
 255 {
 256    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 257    GLuint src_offset, src_stride;
 258    GLuint dst_offset, dst_stride;
 259
 260    if (!pbo ||
 261        intel->ctx._ImageTransferState ||
 262        unpack->SkipPixels || unpack->SkipRows) {
 263       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 264       return GL_FALSE;
 265    }
 266
 267    src_offset = (GLuint) pixels;
 268
 269    if (unpack->RowLength > 0)
 270       src_stride = unpack->RowLength;
 271    else
 272       src_stride = width;
 273
 274    dst_offset = intel_miptree_image_offset(intelImage->mt,
 275                                            intelImage->face,
 276                                            intelImage->level);
 277
 278    dst_stride = intelImage->mt->pitch;
 279
 280    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 281       _mesa_printf("%s: failure 2\n", __FUNCTION__);
 282       return GL_FALSE;
 283    }
 284
 285    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 286
 287    return GL_TRUE;
 288 }
 289
 290
 291
 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, int compressed)
 306 {
 307    struct intel_context *intel = intel_context(ctx);
 308    struct intel_texture_object *intelObj = intel_texture_object(texObj);
 309    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 310    GLint postConvWidth = width;
 311    GLint postConvHeight = height;
 312    GLint texelBytes, sizeInBytes;
 313    GLuint dstRowStride, srcRowStride = texImage->RowStride;
 314
 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       assert(texImage->RowStride == postConvWidth);
 353    }
 354
 355    /* Release the reference to a potentially orphaned buffer.
 356     * Release any old malloced memory.
 357     */
 358    if (intelImage->mt) {
 359       intel_miptree_release(intel, &intelImage->mt);
 360       assert(!texImage->Data);
 361    }
 362    else if (texImage->Data) {
 363       _mesa_align_free(texImage->Data);
 364    }
 365
 366    /* If this is the only texture image in the tree, could call
 367     * bmBufferData with NULL data to free the old block and avoid
 368     * waiting on any outstanding fences.
 369     */
 370    if (intelObj->mt &&
 371        intelObj->mt->first_level == level &&
 372        intelObj->mt->last_level == level &&
 373        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 374        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 375                                   intelImage->face, intelImage->level)) {
 376
 377       DBG("release it\n");
 378       intel_miptree_release(intel, &intelObj->mt);
 379       assert(!intelObj->mt);
 380    }
 381
 382    if (!intelObj->mt) {
 383       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage);
 384       if (!intelObj->mt) {
 385          DBG("guess_and_alloc_mipmap_tree: failed\n");
 386       }
 387    }
 388
 389    assert(!intelImage->mt);
 390
 391    if (intelObj->mt &&
 392        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 393                                  intelImage->face, intelImage->level)) {
 394
 395       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 396       assert(intelImage->mt);
 397    }
 398
 399    if (!intelImage->mt)
 400       DBG("XXX: Image did not fit into tree - storing in local memory!\n");
 401
 402    /* PBO fastpaths:
 403     */
 404    if (dims <= 2 &&
 405        intelImage->mt &&
 406        intel_buffer_object(unpack->BufferObj) &&
 407        check_pbo_format(internalFormat, format,
 408                         type, intelImage->base.TexFormat)) {
 409
 410       DBG("trying pbo upload\n");
 411
 412       /* Attempt to texture directly from PBO data (zero copy upload).
 413        *
 414        * Currently disable as it can lead to worse as well as better
 415        * performance (in particular when intel_region_cow() is
 416        * required).
 417        */
 418       if (intelObj->mt == intelImage->mt &&
 419           intelObj->mt->first_level == level &&
 420           intelObj->mt->last_level == level) {
 421
 422          if (try_pbo_zcopy(intel, intelImage, unpack,
 423                            internalFormat,
 424                            width, height, format, type, pixels)) {
 425
 426             DBG("pbo zcopy upload succeeded\n");
 427             return;
 428          }
 429       }
 430
 431
 432       /* Otherwise, attempt to use the blitter for PBO image uploads.
 433        */
 434       if (try_pbo_upload(intel, intelImage, unpack,
 435                          internalFormat,
 436                          width, height, format, type, pixels)) {
 437          DBG("pbo upload succeeded\n");
 438          return;
 439       }
 440
 441       DBG("pbo upload failed\n");
 442    }
 443
 444
 445
 446    /* intelCopyTexImage calls this function with pixels == NULL, with
 447     * the expectation that the mipmap tree will be set up but nothing
 448     * more will be done.  This is where those calls return:
 449     */
 450    if (compressed) {
 451       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 452                                                       unpack,
 453                                                       "glCompressedTexImage");
 454    } else {
 455       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 456                                            format, type,
 457                                            pixels, unpack, "glTexImage");
 458    }
 459
 460    LOCK_HARDWARE(intel);
 461
 462    if (intelImage->mt) {
 463       texImage->Data = intel_miptree_image_map(intel,
 464                                                intelImage->mt,
 465                                                intelImage->face,
 466                                                intelImage->level,
 467                                                &dstRowStride,
 468                                                intelImage->base.ImageOffsets);
 469       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 470    }
 471    else {
 472       /* Allocate regular memory and store the image there temporarily.   */
 473       if (texImage->IsCompressed) {
 474          sizeInBytes = texImage->CompressedSize;
 475          dstRowStride =
 476             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 477          assert(dims != 3);
 478       }
 479       else {
 480          dstRowStride = postConvWidth * texelBytes;
 481          sizeInBytes = depth * dstRowStride * postConvHeight;
 482       }
 483
 484       texImage->Data = malloc(sizeInBytes);
 485    }
 486
 487    DBG("Upload image %dx%dx%d row_len %d "
 488        "pitch %d\n",
 489        width, height, depth, width * texelBytes, dstRowStride);
 490
 491    /* Copy data.  Would like to know when it's ok for us to eg. use
 492     * the blitter to copy.  Or, use the hardware to do the format
 493     * conversion and copy:
 494     */
 495    if (pixels) {
 496        if (compressed) {
 497            if (intelImage->mt) {
 498                struct intel_region *dst = intelImage->mt->region;
 499                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 500                                0, 0,
 501                                intelImage->mt->level[level].width,
 502                                intelImage->mt->level[level].height/4,
 503                                pixels,
 504                                srcRowStride,
 505                                0, 0);
 506            } else
 507                memcpy(texImage->Data, pixels, imageSize);
 508        } else if (!texImage->TexFormat->StoreImage(ctx, dims,
 509                                                    texImage->_BaseFormat,
 510                                                    texImage->TexFormat,
 511                                                    texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 512                                                    dstRowStride,
 513                                                    texImage->ImageOffsets,
 514                                                    width, height, depth,
 515                                                    format, type, pixels, unpack)) {
 516            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 517        }
 518    }
 519
 520    /* GL_SGIS_generate_mipmap */
 521    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 522       intel_generate_mipmap(ctx, target,
 523                             &ctx->Texture.Unit[ctx->Texture.CurrentUnit],
 524                             texObj);
 525    }
 526
 527    _mesa_unmap_teximage_pbo(ctx, unpack);
 528
 529    if (intelImage->mt) {
 530       intel_miptree_image_unmap(intel, intelImage->mt);
 531       texImage->Data = NULL;
 532    }
 533
 534    UNLOCK_HARDWARE(intel);
 535 }
 536
 537 void
 538 intelTexImage3D(GLcontext * ctx,
 539                 GLenum target, GLint level,
 540                 GLint internalFormat,
 541                 GLint width, GLint height, GLint depth,
 542                 GLint border,
 543                 GLenum format, GLenum type, const void *pixels,
 544                 const struct gl_pixelstore_attrib *unpack,
 545                 struct gl_texture_object *texObj,
 546                 struct gl_texture_image *texImage)
 547 {
 548    intelTexImage(ctx, 3, target, level,
 549                  internalFormat, width, height, depth, border,
 550                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 551 }
 552
 553
 554 void
 555 intelTexImage2D(GLcontext * ctx,
 556                 GLenum target, GLint level,
 557                 GLint internalFormat,
 558                 GLint width, GLint height, GLint border,
 559                 GLenum format, GLenum type, const void *pixels,
 560                 const struct gl_pixelstore_attrib *unpack,
 561                 struct gl_texture_object *texObj,
 562                 struct gl_texture_image *texImage)
 563 {
 564    intelTexImage(ctx, 2, target, level,
 565                  internalFormat, width, height, 1, border,
 566                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 567 }
 568
 569 void
 570 intelTexImage1D(GLcontext * ctx,
 571                 GLenum target, GLint level,
 572                 GLint internalFormat,
 573                 GLint width, 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, 1, target, level,
 580                  internalFormat, width, 1, 1, border,
 581                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 582 }
 583
 584 void intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 585                                 GLint internalFormat,
 586                                 GLint width, GLint height, GLint border,
 587                                 GLsizei imageSize, const GLvoid *data,
 588                                 struct gl_texture_object *texObj,
 589                                 struct gl_texture_image *texImage )
 590 {
 591    intelTexImage(ctx, 2, target, level,
 592                  internalFormat, width, height, 1, border,
 593                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, 1);
 594 }
 595
 596 /**
 597  * Need to map texture image into memory before copying image data,
 598  * then unmap it.
 599  */
 600 static void
 601 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 602                     GLenum format, GLenum type, GLvoid * pixels,
 603                     struct gl_texture_object *texObj,
 604                     struct gl_texture_image *texImage, int compressed)
 605 {
 606    struct intel_context *intel = intel_context(ctx);
 607    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 608
 609    /* Map */
 610    if (intelImage->mt) {
 611       /* Image is stored in hardware format in a buffer managed by the
 612        * kernel.  Need to explicitly map and unmap it.
 613        */
 614       intelImage->base.Data =
 615          intel_miptree_image_map(intel,
 616                                  intelImage->mt,
 617                                  intelImage->face,
 618                                  intelImage->level,
 619                                  &intelImage->base.RowStride,
 620                                  intelImage->base.ImageOffsets);
 621       intelImage->base.RowStride /= intelImage->mt->cpp;
 622    }
 623    else {
 624       /* Otherwise, the image should actually be stored in
 625        * intelImage->base.Data.  This is pretty confusing for
 626        * everybody, I'd much prefer to separate the two functions of
 627        * texImage->Data - storage for texture images in main memory
 628        * and access (ie mappings) of images.  In other words, we'd
 629        * create a new texImage->Map field and leave Data simply for
 630        * storage.
 631        */
 632       assert(intelImage->base.Data);
 633    }
 634
 635
 636    if (compressed) {
 637       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 638                                     texObj, texImage);
 639    } else {
 640       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 641                          texObj, texImage);
 642    }
 643
 644
 645    /* Unmap */
 646    if (intelImage->mt) {
 647       intel_miptree_image_unmap(intel, intelImage->mt);
 648       intelImage->base.Data = NULL;
 649    }
 650 }
 651
 652 void
 653 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 654                  GLenum format, GLenum type, GLvoid * pixels,
 655                  struct gl_texture_object *texObj,
 656                  struct gl_texture_image *texImage)
 657 {
 658    intel_get_tex_image(ctx, target, level, format, type, pixels,
 659                        texObj, texImage, 0);
 660
 661
 662 }
 663
 664 void
 665 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 666                            GLvoid *pixels,
 667                            struct gl_texture_object *texObj,
 668                            struct gl_texture_image *texImage)
 669 {
 670    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 671                        texObj, texImage, 1);
 672 }
 673
 674 void
 675 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 676                   unsigned long long offset, GLint depth, GLuint pitch)
 677 {
 678    struct intel_context *intel = (struct intel_context*)
 679       ((__DRIcontextPrivate*)pDRICtx->private)->driverPrivate;
 680    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 681    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 682
 683    if (!intelObj)
 684       return;
 685
 686    if (intelObj->mt)
 687       intel_miptree_release(intel, &intelObj->mt);
 688
 689    intelObj->imageOverride = GL_TRUE;
 690    intelObj->depthOverride = depth;
 691    intelObj->pitchOverride = pitch;
 692
 693    if (offset)
 694       intelObj->textureOffset = offset;
 695 }
 696
 697 void
 698 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *pDraw)
 699 {
 700    __DRIcontextPrivate *driContext = pDRICtx->private;
 701    __DRIdrawablePrivate *dPriv = pDraw->private;
 702    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 703    struct intel_context *intel = driContext->driverPrivate;
 704    struct intel_texture_object *intelObj;
 705    struct intel_texture_image *intelImage;
 706    struct intel_mipmap_tree *mt;
 707    struct intel_renderbuffer *rb;
 708    struct gl_texture_unit *texUnit;
 709    struct gl_texture_object *texObj;
 710    struct gl_texture_image *texImage;
 711    int level = 0, type, format, internalFormat;
 712
 713    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 714    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 715    intelObj = intel_texture_object(texObj);
 716
 717    if (!intelObj)
 718       return;
 719
 720    __driParseEvents(driContext, dPriv);
 721
 722    rb = intel_fb->color_rb[0];
 723    type = GL_BGRA;
 724    format = GL_UNSIGNED_BYTE;
 725    internalFormat = (rb->region->cpp == 3 ? 3 : 4);
 726
 727    mt = intel_miptree_create_for_region(intel, target,
 728                                         internalFormat,
 729                                         0, 0, rb->region, 1, 0);
 730    if (mt == NULL)
 731        return;
 732
 733    _mesa_lock_texture(&intel->ctx, texObj);
 734
 735    if (intelObj->mt)
 736       intel_miptree_release(intel, &intelObj->mt);
 737
 738    intelObj->mt = mt;
 739    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 740    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 741                               rb->region->pitch, rb->region->height, 1,
 742                               0, internalFormat);
 743
 744    intelImage = intel_texture_image(texImage);
 745    intelImage->face = target_to_face(target);
 746    intelImage->level = level;
 747    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 748                                                   type, format);
 749    _mesa_set_fetch_functions(texImage, 2);
 750    texImage->RowStride = rb->region->pitch;
 751    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 752
 753    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 754                                   intelImage->face, intelImage->level)) {
 755            fprintf(stderr, "miptree doesn't match image\n");
 756    }
 757
 758    _mesa_unlock_texture(&intel->ctx, texObj);
 759 }