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

   1
   2 #include "main/glheader.h"
   3 #include "main/macros.h"
   4 #include "main/mtypes.h"
   5 #include "main/enums.h"
   6 #include "main/bufferobj.h"
   7 #include "main/convolve.h"
   8 #include "main/context.h"
   9 #include "main/texcompress.h"
  10 #include "main/texformat.h"
  11 #include "main/texstore.h"
  12 #include "main/texgetimage.h"
  13 #include "main/texobj.h"
  14 #include "main/texstore.h"
  15 #include "main/teximage.h"
  16
  17 #include "intel_context.h"
  18 #include "intel_mipmap_tree.h"
  19 #include "intel_buffer_objects.h"
  20 #include "intel_batchbuffer.h"
  21 #include "intel_tex.h"
  22 #include "intel_blit.h"
  23 #include "intel_fbo.h"
  24
  25 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  26
  27 /* Functions to store texture images.  Where possible, mipmap_tree's
  28  * will be created or further instantiated with image data, otherwise
  29  * images will be stored in malloc'd memory.  A validation step is
  30  * required to pull those images into a mipmap tree, or otherwise
  31  * decide a fallback is required.
  32  */
  33
  34
  35 static int
  36 logbase2(int n)
  37 {
  38    GLint i = 1;
  39    GLint log2 = 0;
  40
  41    while (n > i) {
  42       i *= 2;
  43       log2++;
  44    }
  45
  46    return log2;
  47 }
  48
  49
  50 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
  51  * 1).
  52  *
  53  * Otherwise, if max_level >= level >= min_level, create tree with
  54  * space for textures from min_level down to max_level.
  55  *
  56  * Otherwise, create tree with space for textures from (level
  57  * 0)..(1x1).  Consider pruning this tree at a validation if the
  58  * saving is worth it.
  59  */
  60 static void
  61 guess_and_alloc_mipmap_tree(struct intel_context *intel,
  62                             struct intel_texture_object *intelObj,
  63                             struct intel_texture_image *intelImage,
  64                             GLboolean expect_accelerated_upload)
  65 {
  66    GLuint firstLevel;
  67    GLuint lastLevel;
  68    GLuint width = intelImage->base.Width;
  69    GLuint height = intelImage->base.Height;
  70    GLuint depth = intelImage->base.Depth;
  71    GLuint l2width, l2height, l2depth;
  72    GLuint i, comp_byte = 0;
  73
  74    DBG("%s\n", __FUNCTION__);
  75
  76    if (intelImage->base.Border ||
  77        ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
  78         ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
  79          (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
  80       return;
  81
  82    if (intelImage->level > intelObj->base.BaseLevel &&
  83        (intelImage->base.Width == 1 ||
  84         (intelObj->base.Target != GL_TEXTURE_1D &&
  85          intelImage->base.Height == 1) ||
  86         (intelObj->base.Target == GL_TEXTURE_3D &&
  87          intelImage->base.Depth == 1)))
  88       return;
  89
  90    /* If this image disrespects BaseLevel, allocate from level zero.
  91     * Usually BaseLevel == 0, so it's unlikely to happen.
  92     */
  93    if (intelImage->level < intelObj->base.BaseLevel)
  94       firstLevel = 0;
  95    else
  96       firstLevel = intelObj->base.BaseLevel;
  97
  98
  99    /* Figure out image dimensions at start level.
 100     */
 101    for (i = intelImage->level; i > firstLevel; i--) {
 102       width <<= 1;
 103       if (height != 1)
 104          height <<= 1;
 105       if (depth != 1)
 106          depth <<= 1;
 107    }
 108
 109    /* Guess a reasonable value for lastLevel.  This is probably going
 110     * to be wrong fairly often and might mean that we have to look at
 111     * resizable buffers, or require that buffers implement lazy
 112     * pagetable arrangements.
 113     */
 114    if ((intelObj->base.MinFilter == GL_NEAREST ||
 115         intelObj->base.MinFilter == GL_LINEAR) &&
 116        intelImage->level == firstLevel) {
 117       lastLevel = firstLevel;
 118    }
 119    else {
 120       l2width = logbase2(width);
 121       l2height = logbase2(height);
 122       l2depth = logbase2(depth);
 123       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 124    }
 125
 126    assert(!intelObj->mt);
 127    if (intelImage->base.IsCompressed)
 128       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 129    intelObj->mt = intel_miptree_create(intel,
 130                                        intelObj->base.Target,
 131                                        intelImage->base._BaseFormat,
 132                                        intelImage->base.InternalFormat,
 133                                        firstLevel,
 134                                        lastLevel,
 135                                        width,
 136                                        height,
 137                                        depth,
 138                                        intelImage->base.TexFormat->TexelBytes,
 139                                        comp_byte,
 140                                        expect_accelerated_upload);
 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 (!_mesa_is_bufferobj(unpack->BufferObj) ||
 207        intel->ctx._ImageTransferState ||
 208        unpack->SkipPixels || unpack->SkipRows) {
 209       DBG("%s: failure 1\n", __FUNCTION__);
 210       return GL_FALSE;
 211    }
 212
 213    /* note: potential 64-bit ptr to 32-bit int cast */
 214    src_offset = (GLuint) (unsigned long) pixels;
 215
 216    if (unpack->RowLength > 0)
 217       src_stride = unpack->RowLength;
 218    else
 219       src_stride = width;
 220
 221    dst_offset = intel_miptree_image_offset(intelImage->mt,
 222                                            intelImage->face,
 223                                            intelImage->level);
 224
 225    dst_stride = intelImage->mt->pitch;
 226
 227    intelFlush(&intel->ctx);
 228    LOCK_HARDWARE(intel);
 229    {
 230       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 231       dri_bo *dst_buffer = intel_region_buffer(intel,
 232                                                intelImage->mt->region,
 233                                                INTEL_WRITE_FULL);
 234
 235
 236       if (!intelEmitCopyBlit(intel,
 237                              intelImage->mt->cpp,
 238                              src_stride, src_buffer, src_offset, GL_FALSE,
 239                              dst_stride, dst_buffer, dst_offset, GL_FALSE,
 240                              0, 0, 0, 0, width, height,
 241                              GL_COPY)) {
 242          UNLOCK_HARDWARE(intel);
 243          return GL_FALSE;
 244       }
 245    }
 246    UNLOCK_HARDWARE(intel);
 247
 248    return GL_TRUE;
 249 }
 250
 251
 252 static GLboolean
 253 try_pbo_zcopy(struct intel_context *intel,
 254               struct intel_texture_image *intelImage,
 255               const struct gl_pixelstore_attrib *unpack,
 256               GLint internalFormat,
 257               GLint width, GLint height,
 258               GLenum format, GLenum type, const void *pixels)
 259 {
 260    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 261    GLuint src_offset, src_stride;
 262    GLuint dst_offset, dst_stride;
 263
 264    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 265        intel->ctx._ImageTransferState ||
 266        unpack->SkipPixels || unpack->SkipRows) {
 267       DBG("%s: failure 1\n", __FUNCTION__);
 268       return GL_FALSE;
 269    }
 270
 271    /* note: potential 64-bit ptr to 32-bit int cast */
 272    src_offset = (GLuint) (unsigned long) pixels;
 273
 274    if (unpack->RowLength > 0)
 275       src_stride = unpack->RowLength;
 276    else
 277       src_stride = width;
 278
 279    dst_offset = intel_miptree_image_offset(intelImage->mt,
 280                                            intelImage->face,
 281                                            intelImage->level);
 282
 283    dst_stride = intelImage->mt->pitch;
 284
 285    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 286       DBG("%s: failure 2\n", __FUNCTION__);
 287       return GL_FALSE;
 288    }
 289
 290    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 291
 292    return GL_TRUE;
 293 }
 294
 295
 296 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,
 307               GLboolean 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 = 0, srcRowStride = texImage->RowStride;
 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 (_mesa_is_format_compressed(texImage->TexFormat->MesaFormat)) {
 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 = _mesa_get_format_bytes(texImage->TexFormat->MesaFormat);
 345
 346       /* Minimum pitch of 32 bytes */
 347       if (postConvWidth * texelBytes < 32) {
 348          postConvWidth = 32 / texelBytes;
 349          texImage->RowStride = postConvWidth;
 350       }
 351
 352       if (!intelImage->mt) {
 353           assert(texImage->RowStride == postConvWidth);
 354       }
 355    }
 356
 357    /* Release the reference to a potentially orphaned buffer.
 358     * Release any old malloced memory.
 359     */
 360    if (intelImage->mt) {
 361       intel_miptree_release(intel, &intelImage->mt);
 362       assert(!texImage->Data);
 363    }
 364    else if (texImage->Data) {
 365       _mesa_free_texmemory(texImage->Data);
 366       texImage->Data = NULL;
 367    }
 368
 369    /* If this is the only texture image in the tree, could call
 370     * bmBufferData with NULL data to free the old block and avoid
 371     * waiting on any outstanding fences.
 372     */
 373    if (intelObj->mt &&
 374        intelObj->mt->first_level == level &&
 375        intelObj->mt->last_level == level &&
 376        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 377        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 378                                   intelImage->face, intelImage->level)) {
 379
 380       DBG("release it\n");
 381       intel_miptree_release(intel, &intelObj->mt);
 382       assert(!intelObj->mt);
 383    }
 384
 385    if (!intelObj->mt) {
 386       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
 387       if (!intelObj->mt) {
 388          DBG("guess_and_alloc_mipmap_tree: failed\n");
 389       }
 390    }
 391
 392    assert(!intelImage->mt);
 393
 394    if (intelObj->mt &&
 395        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 396                                  intelImage->face, intelImage->level)) {
 397
 398       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 399       assert(intelImage->mt);
 400    } else if (intelImage->base.Border == 0) {
 401       int comp_byte = 0;
 402
 403       if (intelImage->base.IsCompressed) {
 404          comp_byte =
 405             intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 406       }
 407
 408       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 409        * a miptree, so create one just for our level and store it in the image.
 410        * It'll get moved into the object miptree at validate time.
 411        */
 412       intelImage->mt = intel_miptree_create(intel, target,
 413                                             intelImage->base.TexFormat->BaseFormat,
 414                                             internalFormat,
 415                                             level, level,
 416                                             width, height, depth,
 417                                             intelImage->base.TexFormat->TexelBytes,
 418                                             comp_byte, pixels == NULL);
 419
 420    }
 421
 422    /* PBO fastpaths:
 423     */
 424    if (dims <= 2 &&
 425        intelImage->mt &&
 426        _mesa_is_bufferobj(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    /* intelCopyTexImage calls this function with pixels == NULL, with
 465     * the expectation that the mipmap tree will be set up but nothing
 466     * more will be done.  This is where those calls return:
 467     */
 468    if (compressed) {
 469       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 470                                                       unpack,
 471                                                       "glCompressedTexImage");
 472    } else {
 473       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 474                                            format, type,
 475                                            pixels, unpack, "glTexImage");
 476    }
 477
 478    LOCK_HARDWARE(intel);
 479
 480    if (intelImage->mt) {
 481       if (pixels != NULL)
 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 pixels %d compressed %d\n",
 508        width, height, depth, width * texelBytes, dstRowStride,
 509        pixels ? 1 : 0, compressed);
 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       StoreTexImageFunc storeImage =
 517          _mesa_get_texstore_func(texImage->TexFormat->MesaFormat);
 518
 519        if (compressed) {
 520            if (intelImage->mt) {
 521                struct intel_region *dst = intelImage->mt->region;
 522                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 523                                0, 0,
 524                                intelImage->mt->level[level].width,
 525                                (intelImage->mt->level[level].height+3)/4,
 526                                pixels,
 527                                srcRowStride,
 528                                0, 0);
 529            } else
 530                memcpy(texImage->Data, pixels, imageSize);
 531        } else if (!storeImage(ctx, dims,
 532                               texImage->_BaseFormat,
 533                               texImage->TexFormat,
 534                               texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 535                               dstRowStride,
 536                               texImage->ImageOffsets,
 537                               width, height, depth,
 538                               format, type, pixels, unpack)) {
 539            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 540        }
 541    }
 542
 543    _mesa_unmap_teximage_pbo(ctx, unpack);
 544
 545    if (intelImage->mt) {
 546       if (pixels != NULL)
 547          intel_miptree_image_unmap(intel, intelImage->mt);
 548       texImage->Data = NULL;
 549    }
 550
 551    UNLOCK_HARDWARE(intel);
 552 }
 553
 554
 555 static 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, GL_FALSE);
 569 }
 570
 571
 572 static 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, GL_FALSE);
 585 }
 586
 587
 588 static void
 589 intelTexImage1D(GLcontext * ctx,
 590                 GLenum target, GLint level,
 591                 GLint internalFormat,
 592                 GLint width, GLint border,
 593                 GLenum format, GLenum type, const void *pixels,
 594                 const struct gl_pixelstore_attrib *unpack,
 595                 struct gl_texture_object *texObj,
 596                 struct gl_texture_image *texImage)
 597 {
 598    intelTexImage(ctx, 1, target, level,
 599                  internalFormat, width, 1, 1, border,
 600                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 601 }
 602
 603
 604 static void
 605 intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 606                            GLint internalFormat,
 607                            GLint width, GLint height, GLint border,
 608                            GLsizei imageSize, const GLvoid *data,
 609                            struct gl_texture_object *texObj,
 610                            struct gl_texture_image *texImage )
 611 {
 612    intelTexImage(ctx, 2, target, level,
 613                  internalFormat, width, height, 1, border,
 614                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
 615 }
 616
 617
 618 /**
 619  * Need to map texture image into memory before copying image data,
 620  * then unmap it.
 621  */
 622 static void
 623 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 624                     GLenum format, GLenum type, GLvoid * pixels,
 625                     struct gl_texture_object *texObj,
 626                     struct gl_texture_image *texImage, GLboolean compressed)
 627 {
 628    struct intel_context *intel = intel_context(ctx);
 629    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 630
 631    /* If we're reading from a texture that has been rendered to, need to
 632     * make sure rendering is complete.
 633     * We could probably predicate this on texObj->_RenderToTexture
 634     */
 635    intelFlush(ctx);
 636
 637    /* Map */
 638    if (intelImage->mt) {
 639       /* Image is stored in hardware format in a buffer managed by the
 640        * kernel.  Need to explicitly map and unmap it.
 641        */
 642       intelImage->base.Data =
 643          intel_miptree_image_map(intel,
 644                                  intelImage->mt,
 645                                  intelImage->face,
 646                                  intelImage->level,
 647                                  &intelImage->base.RowStride,
 648                                  intelImage->base.ImageOffsets);
 649       intelImage->base.RowStride /= intelImage->mt->cpp;
 650    }
 651    else {
 652       /* Otherwise, the image should actually be stored in
 653        * intelImage->base.Data.  This is pretty confusing for
 654        * everybody, I'd much prefer to separate the two functions of
 655        * texImage->Data - storage for texture images in main memory
 656        * and access (ie mappings) of images.  In other words, we'd
 657        * create a new texImage->Map field and leave Data simply for
 658        * storage.
 659        */
 660       assert(intelImage->base.Data);
 661    }
 662
 663
 664    if (compressed) {
 665       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 666                                     texObj, texImage);
 667    } else {
 668       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 669                          texObj, texImage);
 670    }
 671
 672
 673    /* Unmap */
 674    if (intelImage->mt) {
 675       intel_miptree_image_unmap(intel, intelImage->mt);
 676       intelImage->base.Data = NULL;
 677    }
 678 }
 679
 680
 681 static void
 682 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 683                  GLenum format, GLenum type, GLvoid * pixels,
 684                  struct gl_texture_object *texObj,
 685                  struct gl_texture_image *texImage)
 686 {
 687    intel_get_tex_image(ctx, target, level, format, type, pixels,
 688                        texObj, texImage, GL_FALSE);
 689 }
 690
 691
 692 static void
 693 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 694                            GLvoid *pixels,
 695                            struct gl_texture_object *texObj,
 696                            struct gl_texture_image *texImage)
 697 {
 698    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 699                        texObj, texImage, GL_TRUE);
 700 }
 701
 702
 703 void
 704 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 705                   unsigned long long offset, GLint depth, GLuint pitch)
 706 {
 707    struct intel_context *intel = pDRICtx->driverPrivate;
 708    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 709    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 710
 711    if (!intelObj)
 712       return;
 713
 714    if (intelObj->mt)
 715       intel_miptree_release(intel, &intelObj->mt);
 716
 717    intelObj->imageOverride = GL_TRUE;
 718    intelObj->depthOverride = depth;
 719    intelObj->pitchOverride = pitch;
 720
 721    if (offset)
 722       intelObj->textureOffset = offset;
 723 }
 724
 725 void
 726 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 727                    GLint glx_texture_format,
 728                    __DRIdrawable *dPriv)
 729 {
 730    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 731    struct intel_context *intel = pDRICtx->driverPrivate;
 732    struct intel_texture_object *intelObj;
 733    struct intel_texture_image *intelImage;
 734    struct intel_mipmap_tree *mt;
 735    struct intel_renderbuffer *rb;
 736    struct gl_texture_unit *texUnit;
 737    struct gl_texture_object *texObj;
 738    struct gl_texture_image *texImage;
 739    int level = 0, type, format, internalFormat;
 740
 741    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 742    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 743    intelObj = intel_texture_object(texObj);
 744
 745    if (!intelObj)
 746       return;
 747
 748    intel_update_renderbuffers(pDRICtx, dPriv);
 749
 750    rb = intel_fb->color_rb[0];
 751    /* If the region isn't set, then intel_update_renderbuffers was unable
 752     * to get the buffers for the drawable.
 753     */
 754    if (rb->region == NULL)
 755       return;
 756
 757    type = GL_BGRA;
 758    format = GL_UNSIGNED_BYTE;
 759    if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
 760       internalFormat = GL_RGB;
 761    else
 762       internalFormat = GL_RGBA;
 763
 764    mt = intel_miptree_create_for_region(intel, target,
 765                                         internalFormat,
 766                                         0, 0, rb->region, 1, 0);
 767    if (mt == NULL)
 768        return;
 769
 770    _mesa_lock_texture(&intel->ctx, texObj);
 771
 772    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 773    intelImage = intel_texture_image(texImage);
 774
 775    if (intelImage->mt) {
 776       intel_miptree_release(intel, &intelImage->mt);
 777       assert(!texImage->Data);
 778    }
 779    if (intelObj->mt)
 780       intel_miptree_release(intel, &intelObj->mt);
 781
 782    intelObj->mt = mt;
 783    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 784                               rb->region->width, rb->region->height, 1,
 785                               0, internalFormat);
 786
 787    intelImage->face = target_to_face(target);
 788    intelImage->level = level;
 789    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 790                                                   type, format);
 791    _mesa_set_fetch_functions(texImage, 2);
 792    texImage->RowStride = rb->region->pitch;
 793    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 794
 795    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 796                                   intelImage->face, intelImage->level)) {
 797            fprintf(stderr, "miptree doesn't match image\n");
 798    }
 799
 800    _mesa_unlock_texture(&intel->ctx, texObj);
 801 }
 802
 803 void
 804 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 805 {
 806    /* The old interface didn't have the format argument, so copy our
 807     * implementation's behavior at the time.
 808     */
 809    intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 810 }
 811
 812
 813 void
 814 intelInitTextureImageFuncs(struct dd_function_table *functions)
 815 {
 816    functions->TexImage1D = intelTexImage1D;
 817    functions->TexImage2D = intelTexImage2D;
 818    functions->TexImage3D = intelTexImage3D;
 819    functions->GetTexImage = intelGetTexImage;
 820
 821    functions->CompressedTexImage2D = intelCompressedTexImage2D;
 822    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 823 }