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