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/texgetimage.h"
  12 #include "main/texobj.h"
  13 #include "main/texstore.h"
  14 #include "main/teximage.h"
  15
  16 #include "intel_context.h"
  17 #include "intel_mipmap_tree.h"
  18 #include "intel_buffer_objects.h"
  19 #include "intel_batchbuffer.h"
  20 #include "intel_tex.h"
  21 #include "intel_blit.h"
  22 #include "intel_fbo.h"
  23
  24 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  25
  26 /* Functions to store texture images.  Where possible, mipmap_tree's
  27  * will be created or further instantiated with image data, otherwise
  28  * images will be stored in malloc'd memory.  A validation step is
  29  * required to pull those images into a mipmap tree, or otherwise
  30  * decide a fallback is required.
  31  */
  32
  33
  34 static int
  35 logbase2(int n)
  36 {
  37    GLint i = 1;
  38    GLint log2 = 0;
  39
  40    while (n > i) {
  41       i *= 2;
  42       log2++;
  43    }
  44
  45    return log2;
  46 }
  47
  48
  49 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
  50  * 1).
  51  *
  52  * Otherwise, if max_level >= level >= min_level, create tree with
  53  * space for textures from min_level down to max_level.
  54  *
  55  * Otherwise, create tree with space for textures from (level
  56  * 0)..(1x1).  Consider pruning this tree at a validation if the
  57  * saving is worth it.
  58  */
  59 static void
  60 guess_and_alloc_mipmap_tree(struct intel_context *intel,
  61                             struct intel_texture_object *intelObj,
  62                             struct intel_texture_image *intelImage,
  63                             GLboolean expect_accelerated_upload)
  64 {
  65    GLuint firstLevel;
  66    GLuint lastLevel;
  67    GLuint width = intelImage->base.Width;
  68    GLuint height = intelImage->base.Height;
  69    GLuint depth = intelImage->base.Depth;
  70    GLuint l2width, l2height, l2depth;
  71    GLuint i, comp_byte = 0;
  72
  73    DBG("%s\n", __FUNCTION__);
  74
  75    if (intelImage->base.Border ||
  76        ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
  77         ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
  78          (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
  79       return;
  80
  81    if (intelImage->level > intelObj->base.BaseLevel &&
  82        (intelImage->base.Width == 1 ||
  83         (intelObj->base.Target != GL_TEXTURE_1D &&
  84          intelImage->base.Height == 1) ||
  85         (intelObj->base.Target == GL_TEXTURE_3D &&
  86          intelImage->base.Depth == 1)))
  87       return;
  88
  89    /* If this image disrespects BaseLevel, allocate from level zero.
  90     * Usually BaseLevel == 0, so it's unlikely to happen.
  91     */
  92    if (intelImage->level < intelObj->base.BaseLevel)
  93       firstLevel = 0;
  94    else
  95       firstLevel = intelObj->base.BaseLevel;
  96
  97
  98    /* Figure out image dimensions at start level.
  99     */
 100    for (i = intelImage->level; i > firstLevel; i--) {
 101       width <<= 1;
 102       if (height != 1)
 103          height <<= 1;
 104       if (depth != 1)
 105          depth <<= 1;
 106    }
 107
 108    /* Guess a reasonable value for lastLevel.  This is probably going
 109     * to be wrong fairly often and might mean that we have to look at
 110     * resizable buffers, or require that buffers implement lazy
 111     * pagetable arrangements.
 112     */
 113    if ((intelObj->base.MinFilter == GL_NEAREST ||
 114         intelObj->base.MinFilter == GL_LINEAR) &&
 115        intelImage->level == firstLevel) {
 116       lastLevel = firstLevel;
 117    }
 118    else {
 119       l2width = logbase2(width);
 120       l2height = logbase2(height);
 121       l2depth = logbase2(depth);
 122       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 123    }
 124
 125    assert(!intelObj->mt);
 126    if (intelImage->base.IsCompressed)
 127       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 128    intelObj->mt = intel_miptree_create(intel,
 129                                        intelObj->base.Target,
 130                                        intelImage->base._BaseFormat,
 131                                        intelImage->base.InternalFormat,
 132                                        firstLevel,
 133                                        lastLevel,
 134                                        width,
 135                                        height,
 136                                        depth,
 137                                        intelImage->base.TexFormat->TexelBytes,
 138                                        comp_byte,
 139                                        expect_accelerated_upload);
 140
 141    DBG("%s - success\n", __FUNCTION__);
 142 }
 143
 144
 145
 146
 147 static GLuint
 148 target_to_face(GLenum target)
 149 {
 150    switch (target) {
 151    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 152    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 153    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 154    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 155    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 156    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 157       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 158    default:
 159       return 0;
 160    }
 161 }
 162
 163 /* There are actually quite a few combinations this will work for,
 164  * more than what I've listed here.
 165  */
 166 static GLboolean
 167 check_pbo_format(GLint internalFormat,
 168                  GLenum format, GLenum type,
 169                  const struct gl_texture_format *mesa_format)
 170 {
 171    switch (internalFormat) {
 172    case 4:
 173    case GL_RGBA:
 174       return (format == GL_BGRA &&
 175               (type == GL_UNSIGNED_BYTE ||
 176                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 177               mesa_format == &_mesa_texformat_argb8888);
 178    case 3:
 179    case GL_RGB:
 180       return (format == GL_RGB &&
 181               type == GL_UNSIGNED_SHORT_5_6_5 &&
 182               mesa_format == &_mesa_texformat_rgb565);
 183    case GL_YCBCR_MESA:
 184       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 185    default:
 186       return GL_FALSE;
 187    }
 188 }
 189
 190
 191 /* XXX: Do this for TexSubImage also:
 192  */
 193 static GLboolean
 194 try_pbo_upload(struct intel_context *intel,
 195                struct intel_texture_image *intelImage,
 196                const struct gl_pixelstore_attrib *unpack,
 197                GLint internalFormat,
 198                GLint width, GLint height,
 199                GLenum format, GLenum type, const void *pixels)
 200 {
 201    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 202    GLuint src_offset, src_stride;
 203    GLuint dst_x, dst_y, dst_stride;
 204    dri_bo *dst_buffer = intel_region_buffer(intel,
 205                                             intelImage->mt->region,
 206                                             INTEL_WRITE_FULL);
 207
 208    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 209        intel->ctx._ImageTransferState ||
 210        unpack->SkipPixels || unpack->SkipRows) {
 211       DBG("%s: failure 1\n", __FUNCTION__);
 212       return GL_FALSE;
 213    }
 214
 215    /* note: potential 64-bit ptr to 32-bit int cast */
 216    src_offset = (GLuint) (unsigned long) pixels;
 217
 218    if (unpack->RowLength > 0)
 219       src_stride = unpack->RowLength;
 220    else
 221       src_stride = width;
 222
 223    intel_miptree_get_image_offset(intelImage->mt, intelImage->level,
 224                                   intelImage->face, 0,
 225                                   &dst_x, &dst_y);
 226
 227    dst_stride = intelImage->mt->pitch;
 228
 229    if (drm_intel_bo_references(intel->batch->buf, dst_buffer))
 230       intelFlush(&intel->ctx);
 231    LOCK_HARDWARE(intel);
 232    {
 233       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 234
 235       if (!intelEmitCopyBlit(intel,
 236                              intelImage->mt->cpp,
 237                              src_stride, src_buffer, src_offset, GL_FALSE,
 238                              dst_stride, dst_buffer, 0, GL_FALSE,
 239                              0, 0, dst_x, dst_y, width, height,
 240                              GL_COPY)) {
 241          UNLOCK_HARDWARE(intel);
 242          return GL_FALSE;
 243       }
 244    }
 245    UNLOCK_HARDWARE(intel);
 246
 247    return GL_TRUE;
 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_x, dst_y, dst_stride;
 262
 263    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 264        intel->ctx._ImageTransferState ||
 265        unpack->SkipPixels || unpack->SkipRows) {
 266       DBG("%s: failure 1\n", __FUNCTION__);
 267       return GL_FALSE;
 268    }
 269
 270    /* note: potential 64-bit ptr to 32-bit int cast */
 271    src_offset = (GLuint) (unsigned long) pixels;
 272
 273    if (unpack->RowLength > 0)
 274       src_stride = unpack->RowLength;
 275    else
 276       src_stride = width;
 277
 278    intel_miptree_get_image_offset(intelImage->mt, intelImage->level,
 279                                   intelImage->face, 0,
 280                                   &dst_x, &dst_y);
 281
 282    dst_stride = intelImage->mt->pitch;
 283
 284    if (src_stride != dst_stride || dst_x != 0 || dst_y != 0 ||
 285        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    intelImage->face = target_to_face(target);
 321    intelImage->level = level;
 322
 323    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 324       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 325                                          &postConvHeight);
 326    }
 327
 328    /* choose the texture format */
 329    texImage->TexFormat = intelChooseTextureFormat(ctx, internalFormat,
 330                                                   format, type);
 331
 332    _mesa_set_fetch_functions(texImage, dims);
 333
 334    if (texImage->TexFormat->TexelBytes == 0) {
 335       /* must be a compressed format */
 336       texelBytes = 0;
 337       texImage->IsCompressed = GL_TRUE;
 338       texImage->CompressedSize =
 339          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 340                                            texImage->Height, texImage->Depth,
 341                                            texImage->TexFormat->MesaFormat);
 342    } else {
 343       texelBytes = texImage->TexFormat->TexelBytes;
 344
 345       /* Minimum pitch of 32 bytes */
 346       if (postConvWidth * texelBytes < 32) {
 347          postConvWidth = 32 / texelBytes;
 348          texImage->RowStride = postConvWidth;
 349       }
 350
 351       if (!intelImage->mt) {
 352           assert(texImage->RowStride == postConvWidth);
 353       }
 354    }
 355
 356    /* Release the reference to a potentially orphaned buffer.
 357     * Release any old malloced memory.
 358     */
 359    if (intelImage->mt) {
 360       intel_miptree_release(intel, &intelImage->mt);
 361       assert(!texImage->Data);
 362    }
 363    else if (texImage->Data) {
 364       _mesa_free_texmemory(texImage->Data);
 365       texImage->Data = NULL;
 366    }
 367
 368    /* If this is the only texture image in the tree, could call
 369     * bmBufferData with NULL data to free the old block and avoid
 370     * waiting on any outstanding fences.
 371     */
 372    if (intelObj->mt &&
 373        intelObj->mt->first_level == level &&
 374        intelObj->mt->last_level == level &&
 375        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 376        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 377                                   intelImage->face, intelImage->level)) {
 378
 379       DBG("release it\n");
 380       intel_miptree_release(intel, &intelObj->mt);
 381       assert(!intelObj->mt);
 382    }
 383
 384    if (!intelObj->mt) {
 385       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
 386       if (!intelObj->mt) {
 387          DBG("guess_and_alloc_mipmap_tree: failed\n");
 388       }
 389    }
 390
 391    assert(!intelImage->mt);
 392
 393    if (intelObj->mt &&
 394        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 395                                  intelImage->face, intelImage->level)) {
 396
 397       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 398       assert(intelImage->mt);
 399    } else if (intelImage->base.Border == 0) {
 400       int comp_byte = 0;
 401
 402       if (intelImage->base.IsCompressed) {
 403          comp_byte =
 404             intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 405       }
 406
 407       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 408        * a miptree, so create one just for our level and store it in the image.
 409        * It'll get moved into the object miptree at validate time.
 410        */
 411       intelImage->mt = intel_miptree_create(intel, target,
 412                                             intelImage->base.TexFormat->BaseFormat,
 413                                             internalFormat,
 414                                             level, level,
 415                                             width, height, depth,
 416                                             intelImage->base.TexFormat->TexelBytes,
 417                                             comp_byte, pixels == NULL);
 418
 419    }
 420
 421    /* PBO fastpaths:
 422     */
 423    if (dims <= 2 &&
 424        intelImage->mt &&
 425        _mesa_is_bufferobj(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    /* intelCopyTexImage calls this function with pixels == NULL, with
 464     * the expectation that the mipmap tree will be set up but nothing
 465     * more will be done.  This is where those calls return:
 466     */
 467    if (compressed) {
 468       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 469                                                       unpack,
 470                                                       "glCompressedTexImage");
 471    } else {
 472       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 473                                            format, type,
 474                                            pixels, unpack, "glTexImage");
 475    }
 476
 477    LOCK_HARDWARE(intel);
 478
 479    if (intelImage->mt) {
 480       if (pixels != NULL) {
 481          /* Flush any queued rendering with the texture before mapping. */
 482          if (drm_intel_bo_references(intel->batch->buf,
 483                                      intelImage->mt->region->buffer)) {
 484             intelFlush(ctx);
 485          }
 486          texImage->Data = intel_miptree_image_map(intel,
 487                                                   intelImage->mt,
 488                                                   intelImage->face,
 489                                                   intelImage->level,
 490                                                   &dstRowStride,
 491                                                   intelImage->base.ImageOffsets);
 492       }
 493
 494       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 495    }
 496    else {
 497       /* Allocate regular memory and store the image there temporarily.   */
 498       if (texImage->IsCompressed) {
 499          sizeInBytes = texImage->CompressedSize;
 500          dstRowStride =
 501             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 502          assert(dims != 3);
 503       }
 504       else {
 505          dstRowStride = postConvWidth * texelBytes;
 506          sizeInBytes = depth * dstRowStride * postConvHeight;
 507       }
 508
 509       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 510    }
 511
 512    DBG("Upload image %dx%dx%d row_len %d "
 513        "pitch %d pixels %d compressed %d\n",
 514        width, height, depth, width * texelBytes, dstRowStride,
 515        pixels ? 1 : 0, compressed);
 516
 517    /* Copy data.  Would like to know when it's ok for us to eg. use
 518     * the blitter to copy.  Or, use the hardware to do the format
 519     * conversion and copy:
 520     */
 521    if (pixels) {
 522        if (compressed) {
 523            if (intelImage->mt) {
 524                struct intel_region *dst = intelImage->mt->region;
 525                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 526                                0, 0,
 527                                intelImage->mt->level[level].width,
 528                                (intelImage->mt->level[level].height+3)/4,
 529                                pixels,
 530                                srcRowStride,
 531                                0, 0);
 532            } else
 533                memcpy(texImage->Data, pixels, imageSize);
 534        } else if (!texImage->TexFormat->StoreImage(ctx, dims,
 535                                                    texImage->_BaseFormat,
 536                                                    texImage->TexFormat,
 537                                                    texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 538                                                    dstRowStride,
 539                                                    texImage->ImageOffsets,
 540                                                    width, height, depth,
 541                                                    format, type, pixels, unpack)) {
 542            _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 543        }
 544    }
 545
 546    _mesa_unmap_teximage_pbo(ctx, unpack);
 547
 548    if (intelImage->mt) {
 549       if (pixels != NULL)
 550          intel_miptree_image_unmap(intel, intelImage->mt);
 551       texImage->Data = NULL;
 552    }
 553
 554    UNLOCK_HARDWARE(intel);
 555 }
 556
 557
 558 static void
 559 intelTexImage3D(GLcontext * ctx,
 560                 GLenum target, GLint level,
 561                 GLint internalFormat,
 562                 GLint width, GLint height, GLint depth,
 563                 GLint border,
 564                 GLenum format, GLenum type, const void *pixels,
 565                 const struct gl_pixelstore_attrib *unpack,
 566                 struct gl_texture_object *texObj,
 567                 struct gl_texture_image *texImage)
 568 {
 569    intelTexImage(ctx, 3, target, level,
 570                  internalFormat, width, height, depth, border,
 571                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 572 }
 573
 574
 575 static void
 576 intelTexImage2D(GLcontext * ctx,
 577                 GLenum target, GLint level,
 578                 GLint internalFormat,
 579                 GLint width, GLint height, GLint border,
 580                 GLenum format, GLenum type, const void *pixels,
 581                 const struct gl_pixelstore_attrib *unpack,
 582                 struct gl_texture_object *texObj,
 583                 struct gl_texture_image *texImage)
 584 {
 585    intelTexImage(ctx, 2, target, level,
 586                  internalFormat, width, height, 1, border,
 587                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 588 }
 589
 590
 591 static void
 592 intelTexImage1D(GLcontext * ctx,
 593                 GLenum target, GLint level,
 594                 GLint internalFormat,
 595                 GLint width, GLint border,
 596                 GLenum format, GLenum type, const void *pixels,
 597                 const struct gl_pixelstore_attrib *unpack,
 598                 struct gl_texture_object *texObj,
 599                 struct gl_texture_image *texImage)
 600 {
 601    intelTexImage(ctx, 1, target, level,
 602                  internalFormat, width, 1, 1, border,
 603                  format, type, pixels, unpack, texObj, texImage, 0, GL_FALSE);
 604 }
 605
 606
 607 static void
 608 intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 609                            GLint internalFormat,
 610                            GLint width, GLint height, GLint border,
 611                            GLsizei imageSize, const GLvoid *data,
 612                            struct gl_texture_object *texObj,
 613                            struct gl_texture_image *texImage )
 614 {
 615    intelTexImage(ctx, 2, target, level,
 616                  internalFormat, width, height, 1, border,
 617                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, GL_TRUE);
 618 }
 619
 620
 621 /**
 622  * Need to map texture image into memory before copying image data,
 623  * then unmap it.
 624  */
 625 static void
 626 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 627                     GLenum format, GLenum type, GLvoid * pixels,
 628                     struct gl_texture_object *texObj,
 629                     struct gl_texture_image *texImage, GLboolean compressed)
 630 {
 631    struct intel_context *intel = intel_context(ctx);
 632    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 633
 634    /* If we're reading from a texture that has been rendered to, need to
 635     * make sure rendering is complete.
 636     * We could probably predicate this on texObj->_RenderToTexture
 637     */
 638    intelFlush(ctx);
 639
 640    /* Map */
 641    if (intelImage->mt) {
 642       /* Image is stored in hardware format in a buffer managed by the
 643        * kernel.  Need to explicitly map and unmap it.
 644        */
 645       intelImage->base.Data =
 646          intel_miptree_image_map(intel,
 647                                  intelImage->mt,
 648                                  intelImage->face,
 649                                  intelImage->level,
 650                                  &intelImage->base.RowStride,
 651                                  intelImage->base.ImageOffsets);
 652       intelImage->base.RowStride /= intelImage->mt->cpp;
 653    }
 654    else {
 655       /* Otherwise, the image should actually be stored in
 656        * intelImage->base.Data.  This is pretty confusing for
 657        * everybody, I'd much prefer to separate the two functions of
 658        * texImage->Data - storage for texture images in main memory
 659        * and access (ie mappings) of images.  In other words, we'd
 660        * create a new texImage->Map field and leave Data simply for
 661        * storage.
 662        */
 663       assert(intelImage->base.Data);
 664    }
 665
 666
 667    if (compressed) {
 668       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 669                                     texObj, texImage);
 670    } else {
 671       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 672                          texObj, texImage);
 673    }
 674
 675
 676    /* Unmap */
 677    if (intelImage->mt) {
 678       intel_miptree_image_unmap(intel, intelImage->mt);
 679       intelImage->base.Data = NULL;
 680    }
 681 }
 682
 683
 684 static void
 685 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 686                  GLenum format, GLenum type, GLvoid * pixels,
 687                  struct gl_texture_object *texObj,
 688                  struct gl_texture_image *texImage)
 689 {
 690    intel_get_tex_image(ctx, target, level, format, type, pixels,
 691                        texObj, texImage, GL_FALSE);
 692 }
 693
 694
 695 static void
 696 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 697                            GLvoid *pixels,
 698                            struct gl_texture_object *texObj,
 699                            struct gl_texture_image *texImage)
 700 {
 701    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 702                        texObj, texImage, GL_TRUE);
 703 }
 704
 705
 706 void
 707 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 708                   unsigned long long offset, GLint depth, GLuint pitch)
 709 {
 710    struct intel_context *intel = pDRICtx->driverPrivate;
 711    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 712    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 713
 714    if (!intelObj)
 715       return;
 716
 717    if (intelObj->mt)
 718       intel_miptree_release(intel, &intelObj->mt);
 719
 720    intelObj->imageOverride = GL_TRUE;
 721    intelObj->depthOverride = depth;
 722    intelObj->pitchOverride = pitch;
 723
 724    if (offset)
 725       intelObj->textureOffset = offset;
 726 }
 727
 728 void
 729 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 730                    GLint glx_texture_format,
 731                    __DRIdrawable *dPriv)
 732 {
 733    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 734    struct intel_context *intel = pDRICtx->driverPrivate;
 735    struct intel_texture_object *intelObj;
 736    struct intel_texture_image *intelImage;
 737    struct intel_mipmap_tree *mt;
 738    struct intel_renderbuffer *rb;
 739    struct gl_texture_unit *texUnit;
 740    struct gl_texture_object *texObj;
 741    struct gl_texture_image *texImage;
 742    int level = 0, type, format, internalFormat;
 743
 744    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 745    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 746    intelObj = intel_texture_object(texObj);
 747
 748    if (!intelObj)
 749       return;
 750
 751    intel_update_renderbuffers(pDRICtx, dPriv);
 752
 753    rb = intel_fb->color_rb[0];
 754    /* If the region isn't set, then intel_update_renderbuffers was unable
 755     * to get the buffers for the drawable.
 756     */
 757    if (rb->region == NULL)
 758       return;
 759
 760    type = GL_BGRA;
 761    format = GL_UNSIGNED_BYTE;
 762    if (glx_texture_format == GLX_TEXTURE_FORMAT_RGB_EXT)
 763       internalFormat = GL_RGB;
 764    else
 765       internalFormat = GL_RGBA;
 766
 767    mt = intel_miptree_create_for_region(intel, target,
 768                                         internalFormat,
 769                                         0, 0, rb->region, 1, 0);
 770    if (mt == NULL)
 771        return;
 772
 773    _mesa_lock_texture(&intel->ctx, texObj);
 774
 775    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 776    intelImage = intel_texture_image(texImage);
 777
 778    if (intelImage->mt) {
 779       intel_miptree_release(intel, &intelImage->mt);
 780       assert(!texImage->Data);
 781    }
 782    if (intelObj->mt)
 783       intel_miptree_release(intel, &intelObj->mt);
 784
 785    intelObj->mt = mt;
 786    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 787                               rb->region->width, rb->region->height, 1,
 788                               0, internalFormat);
 789
 790    intelImage->face = target_to_face(target);
 791    intelImage->level = level;
 792    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 793                                                   type, format);
 794    _mesa_set_fetch_functions(texImage, 2);
 795    texImage->RowStride = rb->region->pitch;
 796    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 797
 798    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 799                                   intelImage->face, intelImage->level)) {
 800            fprintf(stderr, "miptree doesn't match image\n");
 801    }
 802
 803    _mesa_unlock_texture(&intel->ctx, texObj);
 804 }
 805
 806 void
 807 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 808 {
 809    /* The old interface didn't have the format argument, so copy our
 810     * implementation's behavior at the time.
 811     */
 812    intelSetTexBuffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
 813 }
 814
 815
 816 void
 817 intelInitTextureImageFuncs(struct dd_function_table *functions)
 818 {
 819    functions->TexImage1D = intelTexImage1D;
 820    functions->TexImage2D = intelTexImage2D;
 821    functions->TexImage3D = intelTexImage3D;
 822    functions->GetTexImage = intelGetTexImage;
 823
 824    functions->CompressedTexImage2D = intelCompressedTexImage2D;
 825    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 826 }