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._BaseFormat,
 135                                        intelImage->base.InternalFormat,
 136                                        firstLevel,
 137                                        lastLevel,
 138                                        width,
 139                                        height,
 140                                        depth,
 141                                        intelImage->base.TexFormat->TexelBytes,
 142                                        comp_byte,
 143                                        expect_accelerated_upload);
 144
 145    DBG("%s - success\n", __FUNCTION__);
 146 }
 147
 148
 149
 150
 151 static GLuint
 152 target_to_face(GLenum target)
 153 {
 154    switch (target) {
 155    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 156    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 157    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 158    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 159    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 160    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 161       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 162    default:
 163       return 0;
 164    }
 165 }
 166
 167 /* There are actually quite a few combinations this will work for,
 168  * more than what I've listed here.
 169  */
 170 static GLboolean
 171 check_pbo_format(GLint internalFormat,
 172                  GLenum format, GLenum type,
 173                  const struct gl_texture_format *mesa_format)
 174 {
 175    switch (internalFormat) {
 176    case 4:
 177    case GL_RGBA:
 178       return (format == GL_BGRA &&
 179               (type == GL_UNSIGNED_BYTE ||
 180                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 181               mesa_format == &_mesa_texformat_argb8888);
 182    case 3:
 183    case GL_RGB:
 184       return (format == GL_RGB &&
 185               type == GL_UNSIGNED_SHORT_5_6_5 &&
 186               mesa_format == &_mesa_texformat_rgb565);
 187    case GL_YCBCR_MESA:
 188       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 189    default:
 190       return GL_FALSE;
 191    }
 192 }
 193
 194
 195 /* XXX: Do this for TexSubImage also:
 196  */
 197 static GLboolean
 198 try_pbo_upload(struct intel_context *intel,
 199                struct intel_texture_image *intelImage,
 200                const struct gl_pixelstore_attrib *unpack,
 201                GLint internalFormat,
 202                GLint width, GLint height,
 203                GLenum format, GLenum type, const void *pixels)
 204 {
 205    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 206    GLuint src_offset, src_stride;
 207    GLuint dst_offset, dst_stride;
 208
 209    if (unpack->BufferObj->Name == 0 ||
 210        intel->ctx._ImageTransferState ||
 211        unpack->SkipPixels || unpack->SkipRows) {
 212       DBG("%s: failure 1\n", __FUNCTION__);
 213       return GL_FALSE;
 214    }
 215
 216    /* note: potential 64-bit ptr to 32-bit int cast */
 217    src_offset = (GLuint) (unsigned long) pixels;
 218
 219    if (unpack->RowLength > 0)
 220       src_stride = unpack->RowLength;
 221    else
 222       src_stride = width;
 223
 224    dst_offset = intel_miptree_image_offset(intelImage->mt,
 225                                            intelImage->face,
 226                                            intelImage->level);
 227
 228    dst_stride = intelImage->mt->pitch;
 229
 230    intelFlush(&intel->ctx);
 231    LOCK_HARDWARE(intel);
 232    {
 233       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 234       dri_bo *dst_buffer = intel_region_buffer(intel,
 235                                                intelImage->mt->region,
 236                                                INTEL_WRITE_FULL);
 237
 238
 239       if (!intelEmitCopyBlit(intel,
 240                              intelImage->mt->cpp,
 241                              src_stride, src_buffer, src_offset, GL_FALSE,
 242                              dst_stride, dst_buffer, dst_offset, GL_FALSE,
 243                              0, 0, 0, 0, width, height,
 244                              GL_COPY)) {
 245          UNLOCK_HARDWARE(intel);
 246          return GL_FALSE;
 247       }
 248    }
 249    UNLOCK_HARDWARE(intel);
 250
 251    return GL_TRUE;
 252 }
 253
 254
 255 static GLboolean
 256 try_pbo_zcopy(struct intel_context *intel,
 257               struct intel_texture_image *intelImage,
 258               const struct gl_pixelstore_attrib *unpack,
 259               GLint internalFormat,
 260               GLint width, GLint height,
 261               GLenum format, GLenum type, const void *pixels)
 262 {
 263    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 264    GLuint src_offset, src_stride;
 265    GLuint dst_offset, dst_stride;
 266
 267    if (unpack->BufferObj->Name == 0 ||
 268        intel->ctx._ImageTransferState ||
 269        unpack->SkipPixels || unpack->SkipRows) {
 270       DBG("%s: failure 1\n", __FUNCTION__);
 271       return GL_FALSE;
 272    }
 273
 274    /* note: potential 64-bit ptr to 32-bit int cast */
 275    src_offset = (GLuint) (unsigned long) pixels;
 276
 277    if (unpack->RowLength > 0)
 278       src_stride = unpack->RowLength;
 279    else
 280       src_stride = width;
 281
 282    dst_offset = intel_miptree_image_offset(intelImage->mt,
 283                                            intelImage->face,
 284                                            intelImage->level);
 285
 286    dst_stride = intelImage->mt->pitch;
 287
 288    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 289       DBG("%s: failure 2\n", __FUNCTION__);
 290       return GL_FALSE;
 291    }
 292
 293    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 294
 295    return GL_TRUE;
 296 }
 297
 298
 299 static void
 300 intelTexImage(GLcontext * ctx,
 301               GLint dims,
 302               GLenum target, GLint level,
 303               GLint internalFormat,
 304               GLint width, GLint height, GLint depth,
 305               GLint border,
 306               GLenum format, GLenum type, const void *pixels,
 307               const struct gl_pixelstore_attrib *unpack,
 308               struct gl_texture_object *texObj,
 309               struct gl_texture_image *texImage, GLsizei imageSize,
 310               GLboolean 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 = 0, srcRowStride = texImage->RowStride;
 319
 320    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 321        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 322
 323    intelFlush(ctx);
 324
 325    intelImage->face = target_to_face(target);
 326    intelImage->level = level;
 327
 328    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 329       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 330                                          &postConvHeight);
 331    }
 332
 333    /* choose the texture format */
 334    texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
 335                                                   format, type);
 336
 337    _mesa_set_fetch_functions(texImage, dims);
 338
 339    if (texImage->TexFormat->TexelBytes == 0) {
 340       /* must be a compressed format */
 341       texelBytes = 0;
 342       texImage->IsCompressed = GL_TRUE;
 343       texImage->CompressedSize =
 344          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 345                                            texImage->Height, texImage->Depth,
 346                                            texImage->TexFormat->MesaFormat);
 347    } else {
 348       texelBytes = texImage->TexFormat->TexelBytes;
 349
 350       /* Minimum pitch of 32 bytes */
 351       if (postConvWidth * texelBytes < 32) {
 352          postConvWidth = 32 / texelBytes;
 353          texImage->RowStride = postConvWidth;
 354       }
 355
 356       if (!intelImage->mt) {
 357           assert(texImage->RowStride == postConvWidth);
 358       }
 359    }
 360
 361    /* Release the reference to a potentially orphaned buffer.
 362     * Release any old malloced memory.
 363     */
 364    if (intelImage->mt) {
 365       intel_miptree_release(intel, &intelImage->mt);
 366       assert(!texImage->Data);
 367    }
 368    else if (texImage->Data) {
 369       _mesa_free_texmemory(texImage->Data);
 370       texImage->Data = NULL;
 371    }
 372
 373    /* If this is the only texture image in the tree, could call
 374     * bmBufferData with NULL data to free the old block and avoid
 375     * waiting on any outstanding fences.
 376     */
 377    if (intelObj->mt &&
 378        intelObj->mt->first_level == level &&
 379        intelObj->mt->last_level == level &&
 380        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 381        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 382                                   intelImage->face, intelImage->level)) {
 383
 384       DBG("release it\n");
 385       intel_miptree_release(intel, &intelObj->mt);
 386       assert(!intelObj->mt);
 387    }
 388
 389    if (!intelObj->mt) {
 390       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
 391       if (!intelObj->mt) {
 392          DBG("guess_and_alloc_mipmap_tree: failed\n");
 393       }
 394    }
 395
 396    assert(!intelImage->mt);
 397
 398    if (intelObj->mt &&
 399        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 400                                  intelImage->face, intelImage->level)) {
 401
 402       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 403       assert(intelImage->mt);
 404    } else if (intelImage->base.Border == 0) {
 405       int comp_byte = 0;
 406
 407       if (intelImage->base.IsCompressed) {
 408          comp_byte =
 409             intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 410       }
 411
 412       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 413        * a miptree, so create one just for our level and store it in the image.
 414        * It'll get moved into the object miptree at validate time.
 415        */
 416       intelImage->mt = intel_miptree_create(intel, target,
 417                                             intelImage->base.TexFormat->BaseFormat,
 418                                             internalFormat,
 419                                             level, level,
 420                                             width, height, depth,
 421                                             intelImage->base.TexFormat->TexelBytes,
 422                                             comp_byte, pixels == NULL);
 423
 424    }
 425
 426    /* PBO fastpaths:
 427     */
 428    if (dims <= 2 &&
 429        intelImage->mt &&
 430        unpack->BufferObj->Name != 0 &&
 431        check_pbo_format(internalFormat, format,
 432                         type, intelImage->base.TexFormat)) {
 433
 434       DBG("trying pbo upload\n");
 435
 436       /* Attempt to texture directly from PBO data (zero copy upload).
 437        *
 438        * Currently disable as it can lead to worse as well as better
 439        * performance (in particular when intel_region_cow() is
 440        * required).
 441        */
 442       if (intelObj->mt == intelImage->mt &&
 443           intelObj->mt->first_level == level &&
 444           intelObj->mt->last_level == level) {
 445
 446          if (try_pbo_zcopy(intel, intelImage, unpack,
 447                            internalFormat,
 448                            width, height, format, type, pixels)) {
 449
 450             DBG("pbo zcopy upload succeeded\n");
 451             return;
 452          }
 453       }
 454
 455
 456       /* Otherwise, attempt to use the blitter for PBO image uploads.
 457        */
 458       if (try_pbo_upload(intel, intelImage, unpack,
 459                          internalFormat,
 460                          width, height, format, type, pixels)) {
 461          DBG("pbo upload succeeded\n");
 462          return;
 463       }
 464
 465       DBG("pbo upload failed\n");
 466    }
 467
 468    /* intelCopyTexImage calls this function with pixels == NULL, with
 469     * the expectation that the mipmap tree will be set up but nothing
 470     * more will be done.  This is where those calls return:
 471     */
 472    if (compressed) {
 473       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 474                                                       unpack,
 475                                                       "glCompressedTexImage");
 476    } else {
 477       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 478                                            format, type,
 479                                            pixels, unpack, "glTexImage");
 480    }
 481
 482    LOCK_HARDWARE(intel);
 483
 484    if (intelImage->mt) {
 485       if (pixels != NULL)
 486          texImage->Data = intel_miptree_image_map(intel,
 487                                                   intelImage->mt,
 488                                                   intelImage->face,
 489                                                   intelImage->level,
 490                                                   &dstRowStride,
 491                                                   intelImage->base.ImageOffsets);
 492       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 493    }
 494    else {
 495       /* Allocate regular memory and store the image there temporarily.   */
 496       if (texImage->IsCompressed) {
 497          sizeInBytes = texImage->CompressedSize;
 498          dstRowStride =
 499             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 500          assert(dims != 3);
 501       }
 502       else {
 503          dstRowStride = postConvWidth * texelBytes;
 504          sizeInBytes = depth * dstRowStride * postConvHeight;
 505       }
 506
 507       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 508    }
 509
 510    DBG("Upload image %dx%dx%d row_len %d "
 511        "pitch %d pixels %d compressed %d\n",
 512        width, height, depth, width * texelBytes, dstRowStride,
 513        pixels ? 1 : 0, compressed);
 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+3)/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
 544    _mesa_unmap_teximage_pbo(ctx, unpack);
 545
 546    if (intelImage->mt) {
 547       if (pixels != NULL)
 548          intel_miptree_image_unmap(intel, intelImage->mt);
 549       texImage->Data = NULL;
 550    }
 551
 552    UNLOCK_HARDWARE(intel);
 553
 554    /* GL_SGIS_generate_mipmap */
 555    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 556       intel_generate_mipmap(ctx, target, texObj);
 557    }
 558 }
 559
 560
 561 static void
 562 intelTexImage3D(GLcontext * ctx,
 563                 GLenum target, GLint level,
 564                 GLint internalFormat,
 565                 GLint width, GLint height, GLint depth,
 566                 GLint border,
 567                 GLenum format, GLenum type, const void *pixels,
 568                 const struct gl_pixelstore_attrib *unpack,
 569                 struct gl_texture_object *texObj,
 570                 struct gl_texture_image *texImage)
 571 {
 572    intelTexImage(ctx, 3, target, level,
 573                  internalFormat, width, height, depth, border,
 574                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 575 }
 576
 577
 578 static void
 579 intelTexImage2D(GLcontext * ctx,
 580                 GLenum target, GLint level,
 581                 GLint internalFormat,
 582                 GLint width, GLint height, GLint border,
 583                 GLenum format, GLenum type, const void *pixels,
 584                 const struct gl_pixelstore_attrib *unpack,
 585                 struct gl_texture_object *texObj,
 586                 struct gl_texture_image *texImage)
 587 {
 588    intelTexImage(ctx, 2, target, level,
 589                  internalFormat, width, height, 1, border,
 590                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 591 }
 592
 593
 594 static void
 595 intelTexImage1D(GLcontext * ctx,
 596                 GLenum target, GLint level,
 597                 GLint internalFormat,
 598                 GLint width, GLint border,
 599                 GLenum format, GLenum type, const void *pixels,
 600                 const struct gl_pixelstore_attrib *unpack,
 601                 struct gl_texture_object *texObj,
 602                 struct gl_texture_image *texImage)
 603 {
 604    intelTexImage(ctx, 1, target, level,
 605                  internalFormat, width, 1, 1, border,
 606                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 607 }
 608
 609
 610 static void
 611 intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 612                            GLint internalFormat,
 613                            GLint width, GLint height, GLint border,
 614                            GLsizei imageSize, const GLvoid *data,
 615                            struct gl_texture_object *texObj,
 616                            struct gl_texture_image *texImage )
 617 {
 618    intelTexImage(ctx, 2, target, level,
 619                  internalFormat, width, height, 1, border,
 620                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
 621 }
 622
 623
 624 /**
 625  * Need to map texture image into memory before copying image data,
 626  * then unmap it.
 627  */
 628 static void
 629 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 630                     GLenum format, GLenum type, GLvoid * pixels,
 631                     struct gl_texture_object *texObj,
 632                     struct gl_texture_image *texImage, GLboolean compressed)
 633 {
 634    struct intel_context *intel = intel_context(ctx);
 635    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 636
 637    /* If we're reading from a texture that has been rendered to, need to
 638     * make sure rendering is complete.
 639     * We could probably predicate this on texObj->_RenderToTexture
 640     */
 641    intelFlush(ctx);
 642
 643    /* Map */
 644    if (intelImage->mt) {
 645       /* Image is stored in hardware format in a buffer managed by the
 646        * kernel.  Need to explicitly map and unmap it.
 647        */
 648       intelImage->base.Data =
 649          intel_miptree_image_map(intel,
 650                                  intelImage->mt,
 651                                  intelImage->face,
 652                                  intelImage->level,
 653                                  &intelImage->base.RowStride,
 654                                  intelImage->base.ImageOffsets);
 655       intelImage->base.RowStride /= intelImage->mt->cpp;
 656    }
 657    else {
 658       /* Otherwise, the image should actually be stored in
 659        * intelImage->base.Data.  This is pretty confusing for
 660        * everybody, I'd much prefer to separate the two functions of
 661        * texImage->Data - storage for texture images in main memory
 662        * and access (ie mappings) of images.  In other words, we'd
 663        * create a new texImage->Map field and leave Data simply for
 664        * storage.
 665        */
 666       assert(intelImage->base.Data);
 667    }
 668
 669
 670    if (compressed) {
 671       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 672                                     texObj, texImage);
 673    } else {
 674       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 675                          texObj, texImage);
 676    }
 677
 678
 679    /* Unmap */
 680    if (intelImage->mt) {
 681       intel_miptree_image_unmap(intel, intelImage->mt);
 682       intelImage->base.Data = NULL;
 683    }
 684 }
 685
 686
 687 static void
 688 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 689                  GLenum format, GLenum type, GLvoid * pixels,
 690                  struct gl_texture_object *texObj,
 691                  struct gl_texture_image *texImage)
 692 {
 693    intel_get_tex_image(ctx, target, level, format, type, pixels,
 694                        texObj, texImage, GL_FALSE);
 695 }
 696
 697
 698 static void
 699 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 700                            GLvoid *pixels,
 701                            struct gl_texture_object *texObj,
 702                            struct gl_texture_image *texImage)
 703 {
 704    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 705                        texObj, texImage, GL_TRUE);
 706 }
 707
 708
 709 void
 710 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 711                   unsigned long long offset, GLint depth, GLuint pitch)
 712 {
 713    struct intel_context *intel = pDRICtx->driverPrivate;
 714    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 715    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 716
 717    if (!intelObj)
 718       return;
 719
 720    if (intelObj->mt)
 721       intel_miptree_release(intel, &intelObj->mt);
 722
 723    intelObj->imageOverride = GL_TRUE;
 724    intelObj->depthOverride = depth;
 725    intelObj->pitchOverride = pitch;
 726
 727    if (offset)
 728       intelObj->textureOffset = offset;
 729 }
 730
 731 void
 732 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 733                    GLint glx_texture_format,
 734                    __DRIdrawable *dPriv)
 735 {
 736    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 737    struct intel_context *intel = pDRICtx->driverPrivate;
 738    struct intel_texture_object *intelObj;
 739    struct intel_texture_image *intelImage;
 740    struct intel_mipmap_tree *mt;
 741    struct intel_renderbuffer *rb;
 742    struct gl_texture_unit *texUnit;
 743    struct gl_texture_object *texObj;
 744    struct gl_texture_image *texImage;
 745    int level = 0, type, format, internalFormat;
 746
 747    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 748    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 749    intelObj = intel_texture_object(texObj);
 750
 751    if (!intelObj)
 752       return;
 753
 754    intel_update_renderbuffers(pDRICtx, dPriv);
 755
 756    rb = intel_fb->color_rb[0];
 757    /* If the region isn't set, then intel_update_renderbuffers was unable
 758     * to get the buffers for the drawable.
 759     */
 760    if (rb->region == NULL)
 761       return;
 762
 763    type = GL_BGRA;
 764    format = GL_UNSIGNED_BYTE;
 765    if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
 766       internalFormat = GL_RGB;
 767    else
 768       internalFormat = GL_RGBA;
 769
 770    mt = intel_miptree_create_for_region(intel, target,
 771                                         internalFormat,
 772                                         0, 0, rb->region, 1, 0);
 773    if (mt == NULL)
 774        return;
 775
 776    _mesa_lock_texture(&intel->ctx, texObj);
 777
 778    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 779    intelImage = intel_texture_image(texImage);
 780
 781    if (intelImage->mt) {
 782       intel_miptree_release(intel, &intelImage->mt);
 783       assert(!texImage->Data);
 784    }
 785    if (intelObj->mt)
 786       intel_miptree_release(intel, &intelObj->mt);
 787
 788    intelObj->mt = mt;
 789    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 790                               rb->region->width, rb->region->height, 1,
 791                               0, internalFormat);
 792
 793    intelImage->face = target_to_face(target);
 794    intelImage->level = level;
 795    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 796                                                   type, format);
 797    _mesa_set_fetch_functions(texImage, 2);
 798    texImage->RowStride = rb->region->pitch;
 799    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 800
 801    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 802                                   intelImage->face, intelImage->level)) {
 803            fprintf(stderr, "miptree doesn't match image\n");
 804    }
 805
 806    _mesa_unlock_texture(&intel->ctx, texObj);
 807 }
 808
 809 void
 810 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 811 {
 812    /* The old interface didn't have the format argument, so copy our
 813     * implementation's behavior at the time.
 814     */
 815    intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 816 }
 817
 818
 819 void
 820 intelInitTextureImageFuncs(struct dd_function_table *functions)
 821 {
 822    functions->TexImage1D = intelTexImage1D;
 823    functions->TexImage2D = intelTexImage2D;
 824    functions->TexImage3D = intelTexImage3D;
 825    functions->GetTexImage = intelGetTexImage;
 826
 827    functions->CompressedTexImage2D = intelCompressedTexImage2D;
 828    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 829 }