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
  27 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  28
  29 /* Functions to store texture images.  Where possible, mipmap_tree's
  30  * will be created or further instantiated with image data, otherwise
  31  * images will be stored in malloc'd memory.  A validation step is
  32  * required to pull those images into a mipmap tree, or otherwise
  33  * decide a fallback is required.
  34  */
  35
  36
  37 static int
  38 logbase2(int n)
  39 {
  40    GLint i = 1;
  41    GLint log2 = 0;
  42
  43    while (n > i) {
  44       i *= 2;
  45       log2++;
  46    }
  47
  48    return log2;
  49 }
  50
  51
  52 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
  53  * 1).
  54  *
  55  * Otherwise, if max_level >= level >= min_level, create tree with
  56  * space for textures from min_level down to max_level.
  57  *
  58  * Otherwise, create tree with space for textures from (level
  59  * 0)..(1x1).  Consider pruning this tree at a validation if the
  60  * saving is worth it.
  61  */
  62 static void
  63 guess_and_alloc_mipmap_tree(struct intel_context *intel,
  64                             struct intel_texture_object *intelObj,
  65                             struct intel_texture_image *intelImage)
  66 {
  67    GLuint firstLevel;
  68    GLuint lastLevel;
  69    GLuint width = intelImage->base.Width;
  70    GLuint height = intelImage->base.Height;
  71    GLuint depth = intelImage->base.Depth;
  72    GLuint l2width, l2height, l2depth;
  73    GLuint i, comp_byte = 0;
  74
  75    DBG("%s\n", __FUNCTION__);
  76
  77    if (intelImage->base.Border)
  78       return;
  79
  80    if (intelImage->level > intelObj->base.BaseLevel &&
  81        (intelImage->base.Width == 1 ||
  82         (intelObj->base.Target != GL_TEXTURE_1D &&
  83          intelImage->base.Height == 1) ||
  84         (intelObj->base.Target == GL_TEXTURE_3D &&
  85          intelImage->base.Depth == 1)))
  86       return;
  87
  88    /* If this image disrespects BaseLevel, allocate from level zero.
  89     * Usually BaseLevel == 0, so it's unlikely to happen.
  90     */
  91    if (intelImage->level < intelObj->base.BaseLevel)
  92       firstLevel = 0;
  93    else
  94       firstLevel = intelObj->base.BaseLevel;
  95
  96
  97    /* Figure out image dimensions at start level.
  98     */
  99    for (i = intelImage->level; i > firstLevel; i--) {
 100       width <<= 1;
 101       if (height != 1)
 102          height <<= 1;
 103       if (depth != 1)
 104          depth <<= 1;
 105    }
 106
 107    /* Guess a reasonable value for lastLevel.  This is probably going
 108     * to be wrong fairly often and might mean that we have to look at
 109     * resizable buffers, or require that buffers implement lazy
 110     * pagetable arrangements.
 111     */
 112    if ((intelObj->base.MinFilter == GL_NEAREST ||
 113         intelObj->base.MinFilter == GL_LINEAR) &&
 114        intelImage->level == firstLevel) {
 115       lastLevel = firstLevel;
 116    }
 117    else {
 118       l2width = logbase2(width);
 119       l2height = logbase2(height);
 120       l2depth = logbase2(depth);
 121       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 122    }
 123
 124    assert(!intelObj->mt);
 125    if (intelImage->base.IsCompressed)
 126       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat->MesaFormat);
 127    intelObj->mt = intel_miptree_create(intel,
 128                                        intelObj->base.Target,
 129                                        intelImage->base.InternalFormat,
 130                                        firstLevel,
 131                                        lastLevel,
 132                                        width,
 133                                        height,
 134                                        depth,
 135                                        intelImage->base.TexFormat->TexelBytes,
 136                                        comp_byte);
 137
 138    DBG("%s - success\n", __FUNCTION__);
 139 }
 140
 141
 142
 143
 144 static GLuint
 145 target_to_face(GLenum target)
 146 {
 147    switch (target) {
 148    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 149    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 150    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 151    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 152    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 153    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 154       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 155    default:
 156       return 0;
 157    }
 158 }
 159
 160 /* There are actually quite a few combinations this will work for,
 161  * more than what I've listed here.
 162  */
 163 static GLboolean
 164 check_pbo_format(GLint internalFormat,
 165                  GLenum format, GLenum type,
 166                  const struct gl_texture_format *mesa_format)
 167 {
 168    switch (internalFormat) {
 169    case 4:
 170    case GL_RGBA:
 171       return (format == GL_BGRA &&
 172               (type == GL_UNSIGNED_BYTE ||
 173                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 174               mesa_format == &_mesa_texformat_argb8888);
 175    case 3:
 176    case GL_RGB:
 177       return (format == GL_RGB &&
 178               type == GL_UNSIGNED_SHORT_5_6_5 &&
 179               mesa_format == &_mesa_texformat_rgb565);
 180    case GL_YCBCR_MESA:
 181       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 182    default:
 183       return GL_FALSE;
 184    }
 185 }
 186
 187
 188 /* XXX: Do this for TexSubImage also:
 189  */
 190 static GLboolean
 191 try_pbo_upload(struct intel_context *intel,
 192                struct intel_texture_image *intelImage,
 193                const struct gl_pixelstore_attrib *unpack,
 194                GLint internalFormat,
 195                GLint width, GLint height,
 196                GLenum format, GLenum type, const void *pixels)
 197 {
 198    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 199    GLuint src_offset, src_stride;
 200    GLuint dst_offset, dst_stride;
 201
 202    if (!pbo ||
 203        intel->ctx._ImageTransferState ||
 204        unpack->SkipPixels || unpack->SkipRows) {
 205       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 206       return GL_FALSE;
 207    }
 208
 209    src_offset = (GLuint) pixels;
 210
 211    if (unpack->RowLength > 0)
 212       src_stride = unpack->RowLength;
 213    else
 214       src_stride = width;
 215
 216    dst_offset = intel_miptree_image_offset(intelImage->mt,
 217                                            intelImage->face,
 218                                            intelImage->level);
 219
 220    dst_stride = intelImage->mt->pitch;
 221
 222    intelFlush(&intel->ctx);
 223    LOCK_HARDWARE(intel);
 224    {
 225       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 226       dri_bo *dst_buffer = intel_region_buffer(intel,
 227                                                intelImage->mt->region,
 228                                                INTEL_WRITE_FULL);
 229
 230
 231       intelEmitCopyBlit(intel,
 232                         intelImage->mt->cpp,
 233                         src_stride, src_buffer, src_offset, GL_FALSE,
 234                         dst_stride, dst_buffer, dst_offset, GL_FALSE,
 235                         0, 0, 0, 0, width, height,
 236                         GL_COPY);
 237
 238       intel_batchbuffer_flush(intel->batch);
 239    }
 240    UNLOCK_HARDWARE(intel);
 241
 242    return GL_TRUE;
 243 }
 244
 245
 246
 247 static GLboolean
 248 try_pbo_zcopy(struct intel_context *intel,
 249               struct intel_texture_image *intelImage,
 250               const struct gl_pixelstore_attrib *unpack,
 251               GLint internalFormat,
 252               GLint width, GLint height,
 253               GLenum format, GLenum type, const void *pixels)
 254 {
 255    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 256    GLuint src_offset, src_stride;
 257    GLuint dst_offset, dst_stride;
 258
 259    if (!pbo ||
 260        intel->ctx._ImageTransferState ||
 261        unpack->SkipPixels || unpack->SkipRows) {
 262       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 263       return GL_FALSE;
 264    }
 265
 266    src_offset = (GLuint) pixels;
 267
 268    if (unpack->RowLength > 0)
 269       src_stride = unpack->RowLength;
 270    else
 271       src_stride = width;
 272
 273    dst_offset = intel_miptree_image_offset(intelImage->mt,
 274                                            intelImage->face,
 275                                            intelImage->level);
 276
 277    dst_stride = intelImage->mt->pitch;
 278
 279    if (src_stride != dst_stride || dst_offset != 0 || src_offset != 0) {
 280       _mesa_printf("%s: failure 2\n", __FUNCTION__);
 281       return GL_FALSE;
 282    }
 283
 284    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 285
 286    return GL_TRUE;
 287 }
 288
 289
 290
 291
 292
 293
 294 static void
 295 intelTexImage(GLcontext * ctx,
 296               GLint dims,
 297               GLenum target, GLint level,
 298               GLint internalFormat,
 299               GLint width, GLint height, GLint depth,
 300               GLint border,
 301               GLenum format, GLenum type, const void *pixels,
 302               const struct gl_pixelstore_attrib *unpack,
 303               struct gl_texture_object *texObj,
 304               struct gl_texture_image *texImage, GLsizei imageSize, int compressed)
 305 {
 306    struct intel_context *intel = intel_context(ctx);
 307    struct intel_texture_object *intelObj = intel_texture_object(texObj);
 308    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 309    GLint postConvWidth = width;
 310    GLint postConvHeight = height;
 311    GLint texelBytes, sizeInBytes;
 312    GLuint dstRowStride, srcRowStride = texImage->RowStride;
 313
 314
 315    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 316        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 317
 318    intelFlush(ctx);
 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       assert(texImage->RowStride == postConvWidth);
 352    }
 353
 354    /* Release the reference to a potentially orphaned buffer.
 355     * Release any old malloced memory.
 356     */
 357    if (intelImage->mt) {
 358       intel_miptree_release(intel, &intelImage->mt);
 359       assert(!texImage->Data);
 360    }
 361    else if (texImage->Data) {
 362       _mesa_align_free(texImage->Data);
 363    }
 364
 365    /* If this is the only texture image in the tree, could call
 366     * bmBufferData with NULL data to free the old block and avoid
 367     * waiting on any outstanding fences.
 368     */
 369    if (intelObj->mt &&
 370        intelObj->mt->first_level == level &&
 371        intelObj->mt->last_level == level &&
 372        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 373        !intel_miptree_match_image(intelObj->mt, &intelImage->base,
 374                                   intelImage->face, intelImage->level)) {
 375
 376       DBG("release it\n");
 377       intel_miptree_release(intel, &intelObj->mt);
 378       assert(!intelObj->mt);
 379    }
 380
 381    if (!intelObj->mt) {
 382       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage);
 383       if (!intelObj->mt) {
 384          DBG("guess_and_alloc_mipmap_tree: failed\n");
 385       }
 386    }
 387
 388    assert(!intelImage->mt);
 389
 390    if (intelObj->mt &&
 391        intel_miptree_match_image(intelObj->mt, &intelImage->base,
 392                                  intelImage->face, intelImage->level)) {
 393
 394       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 395       assert(intelImage->mt);
 396    }
 397
 398    if (!intelImage->mt)
 399       DBG("XXX: Image did not fit into tree - storing in local memory!\n");
 400
 401    /* PBO fastpaths:
 402     */
 403    if (dims <= 2 &&
 404        intelImage->mt &&
 405        intel_buffer_object(unpack->BufferObj) &&
 406        check_pbo_format(internalFormat, format,
 407                         type, intelImage->base.TexFormat)) {
 408
 409       DBG("trying pbo upload\n");
 410
 411       /* Attempt to texture directly from PBO data (zero copy upload).
 412        *
 413        * Currently disable as it can lead to worse as well as better
 414        * performance (in particular when intel_region_cow() is
 415        * required).
 416        */
 417       if (intelObj->mt == intelImage->mt &&
 418           intelObj->mt->first_level == level &&
 419           intelObj->mt->last_level == level) {
 420
 421          if (try_pbo_zcopy(intel, intelImage, unpack,
 422                            internalFormat,
 423                            width, height, format, type, pixels)) {
 424
 425             DBG("pbo zcopy upload succeeded\n");
 426             return;
 427          }
 428       }
 429
 430
 431       /* Otherwise, attempt to use the blitter for PBO image uploads.
 432        */
 433       if (try_pbo_upload(intel, intelImage, unpack,
 434                          internalFormat,
 435                          width, height, format, type, pixels)) {
 436          DBG("pbo upload succeeded\n");
 437          return;
 438       }
 439
 440       DBG("pbo upload failed\n");
 441    }
 442
 443
 444
 445    /* intelCopyTexImage calls this function with pixels == NULL, with
 446     * the expectation that the mipmap tree will be set up but nothing
 447     * more will be done.  This is where those calls return:
 448     */
 449    if (compressed) {
 450       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 451                                                       unpack,
 452                                                       "glCompressedTexImage");
 453    } else {
 454       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 455                                            format, type,
 456                                            pixels, unpack, "glTexImage");
 457    }
 458    if (!pixels)
 459       return;
 460
 461    LOCK_HARDWARE(intel);
 462
 463    if (intelImage->mt) {
 464       texImage->Data = intel_miptree_image_map(intel,
 465                                                intelImage->mt,
 466                                                intelImage->face,
 467                                                intelImage->level,
 468                                                &dstRowStride,
 469                                                intelImage->base.ImageOffsets);
 470       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 471    }
 472    else {
 473       /* Allocate regular memory and store the image there temporarily.   */
 474       if (texImage->IsCompressed) {
 475          sizeInBytes = texImage->CompressedSize;
 476          dstRowStride =
 477             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 478          assert(dims != 3);
 479       }
 480       else {
 481          dstRowStride = postConvWidth * texelBytes;
 482          sizeInBytes = depth * dstRowStride * postConvHeight;
 483       }
 484
 485       texImage->Data = malloc(sizeInBytes);
 486    }
 487
 488    DBG("Upload image %dx%dx%d row_len %d "
 489        "pitch %d\n",
 490        width, height, depth, width * texelBytes, dstRowStride);
 491
 492    /* Copy data.  Would like to know when it's ok for us to eg. use
 493     * the blitter to copy.  Or, use the hardware to do the format
 494     * conversion and copy:
 495     */
 496    if (compressed) {
 497        if (intelImage->mt) {
 498            struct intel_region *dst = intelImage->mt->region;
 499            _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 500                    0, 0,
 501                    intelImage->mt->level[level].width,
 502                    intelImage->mt->level[level].height/4,
 503                    pixels,
 504                    srcRowStride,
 505                    0, 0);
 506        } else
 507             memcpy(texImage->Data, pixels, imageSize);
 508    } else if (!texImage->TexFormat->StoreImage(ctx, dims,
 509                                                texImage->_BaseFormat,
 510                                                texImage->TexFormat,
 511                                                texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 512                                                dstRowStride,
 513                                                texImage->ImageOffsets,
 514                                                width, height, depth,
 515                                                format, type, pixels, unpack)) {
 516       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 517    }
 518
 519    /* GL_SGIS_generate_mipmap */
 520    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 521       intel_generate_mipmap(ctx, target,
 522                             &ctx->Texture.Unit[ctx->Texture.CurrentUnit],
 523                             texObj);
 524    }
 525
 526    _mesa_unmap_teximage_pbo(ctx, unpack);
 527
 528    if (intelImage->mt) {
 529       intel_miptree_image_unmap(intel, intelImage->mt);
 530       texImage->Data = NULL;
 531    }
 532
 533    UNLOCK_HARDWARE(intel);
 534 }
 535
 536 void
 537 intelTexImage3D(GLcontext * ctx,
 538                 GLenum target, GLint level,
 539                 GLint internalFormat,
 540                 GLint width, GLint height, GLint depth,
 541                 GLint border,
 542                 GLenum format, GLenum type, const void *pixels,
 543                 const struct gl_pixelstore_attrib *unpack,
 544                 struct gl_texture_object *texObj,
 545                 struct gl_texture_image *texImage)
 546 {
 547    intelTexImage(ctx, 3, target, level,
 548                  internalFormat, width, height, depth, border,
 549                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 550 }
 551
 552
 553 void
 554 intelTexImage2D(GLcontext * ctx,
 555                 GLenum target, GLint level,
 556                 GLint internalFormat,
 557                 GLint width, GLint height, GLint border,
 558                 GLenum format, GLenum type, const void *pixels,
 559                 const struct gl_pixelstore_attrib *unpack,
 560                 struct gl_texture_object *texObj,
 561                 struct gl_texture_image *texImage)
 562 {
 563    intelTexImage(ctx, 2, target, level,
 564                  internalFormat, width, height, 1, border,
 565                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 566 }
 567
 568 void
 569 intelTexImage1D(GLcontext * ctx,
 570                 GLenum target, GLint level,
 571                 GLint internalFormat,
 572                 GLint width, GLint border,
 573                 GLenum format, GLenum type, const void *pixels,
 574                 const struct gl_pixelstore_attrib *unpack,
 575                 struct gl_texture_object *texObj,
 576                 struct gl_texture_image *texImage)
 577 {
 578    intelTexImage(ctx, 1, target, level,
 579                  internalFormat, width, 1, 1, border,
 580                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 581 }
 582
 583 void intelCompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 584                                 GLint internalFormat,
 585                                 GLint width, GLint height, GLint border,
 586                                 GLsizei imageSize, const GLvoid *data,
 587                                 struct gl_texture_object *texObj,
 588                                 struct gl_texture_image *texImage )
 589 {
 590    intelTexImage(ctx, 2, target, level,
 591                  internalFormat, width, height, 1, border,
 592                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, 1);
 593 }
 594
 595 /**
 596  * Need to map texture image into memory before copying image data,
 597  * then unmap it.
 598  */
 599 static void
 600 intel_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 601                     GLenum format, GLenum type, GLvoid * pixels,
 602                     struct gl_texture_object *texObj,
 603                     struct gl_texture_image *texImage, int compressed)
 604 {
 605    struct intel_context *intel = intel_context(ctx);
 606    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 607
 608    /* Map */
 609    if (intelImage->mt) {
 610       /* Image is stored in hardware format in a buffer managed by the
 611        * kernel.  Need to explicitly map and unmap it.
 612        */
 613       intelImage->base.Data =
 614          intel_miptree_image_map(intel,
 615                                  intelImage->mt,
 616                                  intelImage->face,
 617                                  intelImage->level,
 618                                  &intelImage->base.RowStride,
 619                                  intelImage->base.ImageOffsets);
 620       intelImage->base.RowStride /= intelImage->mt->cpp;
 621    }
 622    else {
 623       /* Otherwise, the image should actually be stored in
 624        * intelImage->base.Data.  This is pretty confusing for
 625        * everybody, I'd much prefer to separate the two functions of
 626        * texImage->Data - storage for texture images in main memory
 627        * and access (ie mappings) of images.  In other words, we'd
 628        * create a new texImage->Map field and leave Data simply for
 629        * storage.
 630        */
 631       assert(intelImage->base.Data);
 632    }
 633
 634
 635    if (compressed) {
 636       _mesa_get_compressed_teximage(ctx, target, level, pixels,
 637                                     texObj, texImage);
 638    } else {
 639       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 640                          texObj, texImage);
 641    }
 642
 643
 644    /* Unmap */
 645    if (intelImage->mt) {
 646       intel_miptree_image_unmap(intel, intelImage->mt);
 647       intelImage->base.Data = NULL;
 648    }
 649 }
 650
 651 void
 652 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 653                  GLenum format, GLenum type, GLvoid * pixels,
 654                  struct gl_texture_object *texObj,
 655                  struct gl_texture_image *texImage)
 656 {
 657    intel_get_tex_image(ctx, target, level, format, type, pixels,
 658                        texObj, texImage, 0);
 659
 660
 661 }
 662
 663 void
 664 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 665                            GLvoid *pixels,
 666                            const struct gl_texture_object *texObj,
 667                            const struct gl_texture_image *texImage)
 668 {
 669    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 670                        texObj, texImage, 1);
 671
 672 }
 673
 674 void
 675 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 676                   unsigned long long offset, GLint depth, GLuint pitch)
 677 {
 678    struct intel_context *intel = (struct intel_context*)
 679       ((__DRIcontextPrivate*)pDRICtx->private)->driverPrivate;
 680    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 681    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 682
 683    if (!intelObj)
 684       return;
 685
 686    if (intelObj->mt)
 687       intel_miptree_release(intel, &intelObj->mt);
 688
 689    intelObj->imageOverride = GL_TRUE;
 690    intelObj->depthOverride = depth;
 691    intelObj->pitchOverride = pitch;
 692
 693    if (offset)
 694       intelObj->textureOffset = offset;
 695 }
 696
 697 void
 698 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target,
 699                   unsigned long handle, GLint cpp, GLuint pitch, GLuint height)
 700 {
 701    __DRIcontextPrivate *driContext = pDRICtx->private;
 702    struct intel_context *intel = driContext->driverPrivate;
 703    struct intel_texture_object *intelObj;
 704    struct intel_texture_image *intelImage;
 705    struct intel_mipmap_tree *mt;
 706    struct intel_region *region;
 707    struct gl_texture_unit *texUnit;
 708    struct gl_texture_object *texObj;
 709    struct gl_texture_image *texImage;
 710    int level = 0;
 711
 712    /* FIXME: type, format, internalFormat */
 713    int type = GL_BGRA;
 714    int format = GL_UNSIGNED_BYTE;
 715    int internalFormat = (cpp == 3 ? 3 : 4);
 716    cpp = 4;
 717    pitch /= 4;
 718
 719    texUnit = &intel->ctx.Texture.Unit[intel->ctx.Texture.CurrentUnit];
 720    texObj = _mesa_select_tex_object(&intel->ctx, texUnit, target);
 721    intelObj = intel_texture_object(texObj);
 722
 723    if (!intelObj)
 724       return;
 725
 726    region = intel_region_alloc_for_handle(intel, cpp, pitch, height,
 727                                           0, handle);
 728
 729    mt = intel_miptree_create_for_region(intel, target,
 730                                         internalFormat,
 731                                         0, 0, region, 1, 0);
 732    if (mt == NULL)
 733        return;
 734
 735    _mesa_lock_texture(&intel->ctx, texObj);
 736
 737    if (intelObj->mt)
 738       intel_miptree_release(intel, &intelObj->mt);
 739
 740    intelObj->mt = mt;
 741    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 742    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 743                               pitch, height, 1,
 744                               0, internalFormat);
 745
 746    intelImage = intel_texture_image(texImage);
 747    intelImage->face = target_to_face(target);
 748    intelImage->level = level;
 749    texImage->TexFormat = intelChooseTextureFormat(&intel->ctx, internalFormat,
 750                                                   type, format);
 751    _mesa_set_fetch_functions(texImage, 2);
 752    texImage->RowStride = pitch;
 753    intel_miptree_reference(&intelImage->mt, intelObj->mt);
 754
 755    if (!intel_miptree_match_image(intelObj->mt, &intelImage->base,
 756                                   intelImage->face, intelImage->level)) {
 757            fprintf(stderr, "miptree doesn't match image\n");
 758    }
 759
 760    _mesa_unlock_texture(&intel->ctx, texObj);
 761 }