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       intel_batchbuffer_flush(intel->batch);
 243    }
 244    UNLOCK_HARDWARE(intel);
 245
 246    return GL_TRUE;
 247 }
 248
 249
 250
 251 static GLboolean
 252 try_pbo_zcopy(struct intel_context *intel,
 253               struct intel_texture_image *intelImage,
 254               const struct gl_pixelstore_attrib *unpack,
 255               GLint internalFormat,
 256               GLint width, GLint height,
 257               GLenum format, GLenum type, const void *pixels)
 258 {
 259    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 260    GLuint src_offset, src_stride;
 261    GLuint dst_offset, dst_stride;
 262
 263    if (!pbo ||
 264        intel->ctx._ImageTransferState ||
 265        unpack->SkipPixels || unpack->SkipRows) {
 266       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 267       return GL_FALSE;
 268    }
 269
 270    src_offset = (GLuint) pixels;
 271
 272    if (unpack->RowLength > 0)
 273       src_stride = unpack->RowLength;
 274    else
 275       src_stride = width;
 276
 277    dst_offset = intel_miptree_image_offset(intelImage->mt,
 278                                            intelImage->face,
 279                                            intelImage->level);
 280
 281    dst_stride = intelImage->mt->pitch;
 282
 283    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 284       _mesa_printf("%s: failure 2\n", __FUNCTION__);
 285       return GL_FALSE;
 286    }
 287
 288    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 289
 290    return GL_TRUE;
 291 }
 292
 293
 294
 295
 296
 297
 298 static void
 299 intelTexImage(GLcontext * ctx,
 300               GLint dims,
 301               GLenum target, GLint level,
 302               GLint internalFormat,
 303               GLint width, GLint height, GLint depth,
 304               GLint border,
 305               GLenum format, GLenum type, const void *pixels,
 306               const struct gl_pixelstore_attrib *unpack,
 307               struct gl_texture_object *texObj,
 308               struct gl_texture_image *texImage, GLsizei imageSize, int compressed)
 309 {
 310    struct intel_context *intel = intel_context(ctx);
 311    struct intel_texture_object *intelObj = intel_texture_object(texObj);
 312    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 313    GLint postConvWidth = width;
 314    GLint postConvHeight = height;
 315    GLint texelBytes, sizeInBytes;
 316    GLuint dstRowStride, srcRowStride = texImage->RowStride;
 317
 318
 319    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 320        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 321
 322    intelFlush(ctx);
 323
 324    intelImage->face = target_to_face(target);
 325    intelImage->level = level;
 326
 327    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 328       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 329                                          &postConvHeight);
 330    }
 331
 332    /* choose the texture format */
 333    texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
 334                                                   format, type);
 335
 336    _mesa_set_fetch_functions(texImage, dims);
 337
 338    if (texImage->TexFormat->TexelBytes == 0) {
 339       /* must be a compressed format */
 340       texelBytes = 0;
 341       texImage->IsCompressed = GL_TRUE;
 342       texImage->CompressedSize =
 343          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 344                                            texImage->Height, texImage->Depth,
 345                                            texImage->TexFormat->MesaFormat);
 346    } else {
 347       texelBytes = texImage->TexFormat->TexelBytes;
 348
 349       /* Minimum pitch of 32 bytes */
 350       if (postConvWidth * texelBytes < 32) {
 351          postConvWidth = 32 / texelBytes;
 352          texImage->RowStride = postConvWidth;
 353       }
 354
 355       if (!intelImage->mt) {
 356           assert(texImage->RowStride == postConvWidth);
 357       }
 358    }
 359
 360    /* Release the reference to a potentially orphaned buffer.
 361     * Release any old malloced memory.
 362     */
 363    if (intelImage->mt) {
 364       intel_miptree_release(intel, &intelImage->mt);
 365       assert(!texImage->Data);
 366    }
 367    else if (texImage->Data) {
 368       _mesa_free_texmemory(texImage->Data);
 369       texImage->Data = NULL;
 370    }
 371
 372    /* If this is the only texture image in the tree, could call
 373     * bmBufferData with NULL data to free the old block and avoid
 374     * waiting on any outstanding fences.
 375     */
 376    if (intelObj->mt &&
 377        intelObj->mt->first_level == level &&
 378        intelObj->mt->last_level == level &&
 379        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 380        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 381                                   intelImage->face, intelImage->level)) {
 382
 383       DBG("release it\n");
 384       intel_miptree_release(intel, &intelObj->mt);
 385       assert(!intelObj->mt);
 386    }
 387
 388    if (!intelObj->mt) {
 389       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage);
 390       if (!intelObj->mt) {
 391          DBG("guess_and_alloc_mipmap_tree: failed\n");
 392       }
 393    }
 394
 395    assert(!intelImage->mt);
 396
 397    if (intelObj->mt &&
 398        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 399                                  intelImage->face, intelImage->level)) {
 400
 401       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 402       assert(intelImage->mt);
 403    }
 404
 405    if (!intelImage->mt)
 406       DBG("XXX: Image did not fit into tree - storing in local memory!\n");
 407
 408    /* PBO fastpaths:
 409     */
 410    if (dims <= 2 &&
 411        intelImage->mt &&
 412        intel_buffer_object(unpack->BufferObj) &&
 413        check_pbo_format(internalFormat, format,
 414                         type, intelImage->base.TexFormat)) {
 415
 416       DBG("trying pbo upload\n");
 417
 418       /* Attempt to texture directly from PBO data (zero copy upload).
 419        *
 420        * Currently disable as it can lead to worse as well as better
 421        * performance (in particular when intel_region_cow() is
 422        * required).
 423        */
 424       if (intelObj->mt == intelImage->mt &&
 425           intelObj->mt->first_level == level &&
 426           intelObj->mt->last_level == level) {
 427
 428          if (try_pbo_zcopy(intel, intelImage, unpack,
 429                            internalFormat,
 430                            width, height, format, type, pixels)) {
 431
 432             DBG("pbo zcopy upload succeeded\n");
 433             return;
 434          }
 435       }
 436
 437
 438       /* Otherwise, attempt to use the blitter for PBO image uploads.
 439        */
 440       if (try_pbo_upload(intel, intelImage, unpack,
 441                          internalFormat,
 442                          width, height, format, type, pixels)) {
 443          DBG("pbo upload succeeded\n");
 444          return;
 445       }
 446
 447       DBG("pbo upload failed\n");
 448    }
 449
 450
 451
 452    /* intelCopyTexImage calls this function with pixels == NULL, with
 453     * the expectation that the mipmap tree will be set up but nothing
 454     * more will be done.  This is where those calls return:
 455     */
 456    if (compressed) {
 457       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 458                                                       unpack,
 459                                                       "glCompressedTexImage");
 460    } else {
 461       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 462                                            format, type,
 463                                            pixels, unpack, "glTexImage");
 464    }
 465
 466    LOCK_HARDWARE(intel);
 467
 468    if (intelImage->mt) {
 469       texImage->Data = intel_miptree_image_map(intel,
 470                                                intelImage->mt,
 471                                                intelImage->face,
 472                                                intelImage->level,
 473                                                &dstRowStride,
 474                                                intelImage->base.ImageOffsets);
 475       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 476    }
 477    else {
 478       /* Allocate regular memory and store the image there temporarily.   */
 479       if (texImage->IsCompressed) {
 480          sizeInBytes = texImage->CompressedSize;
 481          dstRowStride =
 482             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 483          assert(dims != 3);
 484       }
 485       else {
 486          dstRowStride = postConvWidth * texelBytes;
 487          sizeInBytes = depth * dstRowStride * postConvHeight;
 488       }
 489
 490       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 491    }
 492
 493    DBG("Upload image %dx%dx%d row_len %d "
 494        "pitch %d\n",
 495        width, height, depth, width * texelBytes, dstRowStride);
 496
 497    /* Copy data.  Would like to know when it's ok for us to eg. use
 498     * the blitter to copy.  Or, use the hardware to do the format
 499     * conversion and copy:
 500     */
 501    if (pixels) {
 502        if (compressed) {
 503            if (intelImage->mt) {
 504                struct intel_region *dst = intelImage->mt->region;
 505                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 506                                0, 0,
 507                                intelImage->mt->level[level].width,
 508                                intelImage->mt->level[level].height/4,
 509                                pixels,
 510                                srcRowStride,
 511                                0, 0);
 512            } else
 513                memcpy(texImage->Data, pixels, imageSize);
 514        } else if (!texImage->TexFormat->StoreImage(ctx, dims,
 515                                                    texImage->_BaseFormat,
 516                                                    texImage->TexFormat,
 517                                                    texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 518                                                    dstRowStride,
 519                                                    texImage->ImageOffsets,
 520                                                    width, height, depth,
 521                                                    format, type, pixels, unpack)) {
 522            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 523        }
 524    }
 525
 526    /* GL_SGIS_generate_mipmap */
 527    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 528       intel_generate_mipmap(ctx, target, texObj);
 529    }
 530
 531    _mesa_unmap_teximage_pbo(ctx, unpack);
 532
 533    if (intelImage->mt) {
 534       intel_miptree_image_unmap(intel, intelImage->mt);
 535       texImage->Data = NULL;
 536    }
 537
 538    UNLOCK_HARDWARE(intel);
 539 }
 540
 541 void
 542 intelTexImage3D(GLcontext * ctx,
 543                 GLenum target, GLint level,
 544                 GLint internalFormat,
 545                 GLint width, GLint height, GLint depth,
 546                 GLint border,
 547                 GLenum format, GLenum type, const void *pixels,
 548                 const struct gl_pixelstore_attrib *unpack,
 549                 struct gl_texture_object *texObj,
 550                 struct gl_texture_image *texImage)
 551 {
 552    intelTexImage(ctx, 3, target, level,
 553                  internalFormat, width, height, depth, border,
 554                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 555 }
 556
 557
 558 void
 559 intelTexImage2D(GLcontext * ctx,
 560                 GLenum target, GLint level,
 561                 GLint internalFormat,
 562                 GLint width, GLint height, GLint border,
 563                 GLenum format, GLenum type, const void *pixels,
 564                 const struct gl_pixelstore_attrib *unpack,
 565                 struct gl_texture_object *texObj,
 566                 struct gl_texture_image *texImage)
 567 {
 568    intelTexImage(ctx, 2, target, level,
 569                  internalFormat, width, height, 1, border,
 570                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 571 }
 572
 573 void
 574 intelTexImage1D(GLcontext * ctx,
 575                 GLenum target, GLint level,
 576                 GLint internalFormat,
 577                 GLint width, GLint border,
 578                 GLenum format, GLenum type, const void *pixels,
 579                 const struct gl_pixelstore_attrib *unpack,
 580                 struct gl_texture_object *texObj,
 581                 struct gl_texture_image *texImage)
 582 {
 583    intelTexImage(ctx, 1, target, level,
 584                  internalFormat, width, 1, 1, border,
 585                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 586 }
 587
 588 void intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 589                                 GLint internalFormat,
 590                                 GLint width, GLint height, GLint border,
 591                                 GLsizei imageSize, const GLvoid *data,
 592                                 struct gl_texture_object *texObj,
 593                                 struct gl_texture_image *texImage )
 594 {
 595    intelTexImage(ctx, 2, target, level,
 596                  internalFormat, width, height, 1, border,
 597                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, 1);
 598 }
 599
 600 /**
 601  * Need to map texture image into memory before copying image data,
 602  * then unmap it.
 603  */
 604 static void
 605 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 606                     GLenum format, GLenum type, GLvoid * pixels,
 607                     struct gl_texture_object *texObj,
 608                     struct gl_texture_image *texImage, int compressed)
 609 {
 610    struct intel_context *intel = intel_context(ctx);
 611    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 612
 613    /* Map */
 614    if (intelImage->mt) {
 615       /* Image is stored in hardware format in a buffer managed by the
 616        * kernel.  Need to explicitly map and unmap it.
 617        */
 618       intelImage->base.Data =
 619          intel_miptree_image_map(intel,
 620                                  intelImage->mt,
 621                                  intelImage->face,
 622                                  intelImage->level,
 623                                  &intelImage->base.RowStride,
 624                                  intelImage->base.ImageOffsets);
 625       intelImage->base.RowStride /= intelImage->mt->cpp;
 626    }
 627    else {
 628       /* Otherwise, the image should actually be stored in
 629        * intelImage->base.Data.  This is pretty confusing for
 630        * everybody, I'd much prefer to separate the two functions of
 631        * texImage->Data - storage for texture images in main memory
 632        * and access (ie mappings) of images.  In other words, we'd
 633        * create a new texImage->Map field and leave Data simply for
 634        * storage.
 635        */
 636       assert(intelImage->base.Data);
 637    }
 638
 639
 640    if (compressed) {
 641       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 642                                     texObj, texImage);
 643    } else {
 644       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 645                          texObj, texImage);
 646    }
 647
 648
 649    /* Unmap */
 650    if (intelImage->mt) {
 651       intel_miptree_image_unmap(intel, intelImage->mt);
 652       intelImage->base.Data = NULL;
 653    }
 654 }
 655
 656 void
 657 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 658                  GLenum format, GLenum type, GLvoid * pixels,
 659                  struct gl_texture_object *texObj,
 660                  struct gl_texture_image *texImage)
 661 {
 662    intel_get_tex_image(ctx, target, level, format, type, pixels,
 663                        texObj, texImage, 0);
 664
 665
 666 }
 667
 668 void
 669 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 670                            GLvoid *pixels,
 671                            struct gl_texture_object *texObj,
 672                            struct gl_texture_image *texImage)
 673 {
 674    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 675                        texObj, texImage, 1);
 676 }
 677
 678 void
 679 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 680                   unsigned long long offset, GLint depth, GLuint pitch)
 681 {
 682    struct intel_context *intel = pDRICtx->driverPrivate;
 683    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 684    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 685
 686    if (!intelObj)
 687       return;
 688
 689    if (intelObj->mt)
 690       intel_miptree_release(intel, &intelObj->mt);
 691
 692    intelObj->imageOverride = GL_TRUE;
 693    intelObj->depthOverride = depth;
 694    intelObj->pitchOverride = pitch;
 695
 696    if (offset)
 697       intelObj->textureOffset = offset;
 698 }
 699
 700 void
 701 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 702 {
 703    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 704    struct intel_context *intel = pDRICtx->driverPrivate;
 705    struct intel_texture_object *intelObj;
 706    struct intel_texture_image *intelImage;
 707    struct intel_mipmap_tree *mt;
 708    struct intel_renderbuffer *rb;
 709    struct gl_texture_unit *texUnit;
 710    struct gl_texture_object *texObj;
 711    struct gl_texture_image *texImage;
 712    int level = 0, type, format, internalFormat;
 713
 714    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 715    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 716    intelObj = intel_texture_object(texObj);
 717
 718    if (!intelObj)
 719       return;
 720
 721    __driParseEvents(pDRICtx, dPriv);
 722
 723    rb = intel_fb->color_rb[0];
 724    type = GL_BGRA;
 725    format = GL_UNSIGNED_BYTE;
 726    internalFormat = (rb->region->cpp == 3 ? 3 : 4);
 727
 728    mt = intel_miptree_create_for_region(intel, target,
 729                                         internalFormat,
 730                                         0, 0, rb->region, 1, 0);
 731    if (mt == NULL)
 732        return;
 733
 734    _mesa_lock_texture(&intel->ctx, texObj);
 735
 736    if (intelObj->mt)
 737       intel_miptree_release(intel, &intelObj->mt);
 738
 739    intelObj->mt = mt;
 740    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 741    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 742                               rb->region->pitch, rb->region->height, 1,
 743                               0, internalFormat);
 744
 745    intelImage = intel_texture_image(texImage);
 746    intelImage->face = target_to_face(target);
 747    intelImage->level = level;
 748    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 749                                                   type, format);
 750    _mesa_set_fetch_functions(texImage, 2);
 751    texImage->RowStride = rb->region->pitch;
 752    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 753
 754    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 755                                   intelImage->face, intelImage->level)) {
 756            fprintf(stderr, "miptree doesn't match image\n");
 757    }
 758
 759    _mesa_unlock_texture(&intel->ctx, texObj);
 760 }