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/formats.h"
  10 #include "main/texcompress.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    GLuint texelBytes;
  74
  75    DBG("%s\n", __FUNCTION__);
  76
  77    if (intelImage->base.Border ||
  78        ((intelImage->base._BaseFormat == GL_DEPTH_COMPONENT) &&
  79         ((intelObj->base.WrapS == GL_CLAMP_TO_BORDER) ||
  80          (intelObj->base.WrapT == GL_CLAMP_TO_BORDER))))
  81       return;
  82
  83    if (intelImage->level > intelObj->base.BaseLevel &&
  84        (intelImage->base.Width == 1 ||
  85         (intelObj->base.Target != GL_TEXTURE_1D &&
  86          intelImage->base.Height == 1) ||
  87         (intelObj->base.Target == GL_TEXTURE_3D &&
  88          intelImage->base.Depth == 1)))
  89       return;
  90
  91    /* If this image disrespects BaseLevel, allocate from level zero.
  92     * Usually BaseLevel == 0, so it's unlikely to happen.
  93     */
  94    if (intelImage->level < intelObj->base.BaseLevel)
  95       firstLevel = 0;
  96    else
  97       firstLevel = intelObj->base.BaseLevel;
  98
  99
 100    /* Figure out image dimensions at start level.
 101     */
 102    for (i = intelImage->level; i > firstLevel; i--) {
 103       width <<= 1;
 104       if (height != 1)
 105          height <<= 1;
 106       if (depth != 1)
 107          depth <<= 1;
 108    }
 109
 110    /* Guess a reasonable value for lastLevel.  This is probably going
 111     * to be wrong fairly often and might mean that we have to look at
 112     * resizable buffers, or require that buffers implement lazy
 113     * pagetable arrangements.
 114     */
 115    if ((intelObj->base.MinFilter == GL_NEAREST ||
 116         intelObj->base.MinFilter == GL_LINEAR) &&
 117        intelImage->level == firstLevel &&
 118        (intel->gen < 4 || firstLevel == 0)) {
 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 (_mesa_is_format_compressed(intelImage->base.TexFormat))
 130       comp_byte = intel_compressed_num_bytes(intelImage->base.TexFormat);
 131
 132    texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat);
 133
 134    intelObj->mt = intel_miptree_create(intel,
 135                                        intelObj->base.Target,
 136                                        intelImage->base._BaseFormat,
 137                                        intelImage->base.InternalFormat,
 138                                        firstLevel,
 139                                        lastLevel,
 140                                        width,
 141                                        height,
 142                                        depth,
 143                                        texelBytes,
 144                                        comp_byte,
 145                                        expect_accelerated_upload);
 146
 147    DBG("%s - success\n", __FUNCTION__);
 148 }
 149
 150
 151
 152
 153 static GLuint
 154 target_to_face(GLenum target)
 155 {
 156    switch (target) {
 157    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 158    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 159    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 160    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 161    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 162    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 163       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 164    default:
 165       return 0;
 166    }
 167 }
 168
 169 /* There are actually quite a few combinations this will work for,
 170  * more than what I've listed here.
 171  */
 172 static GLboolean
 173 check_pbo_format(GLint internalFormat,
 174                  GLenum format, GLenum type,
 175                  gl_format mesa_format)
 176 {
 177    switch (internalFormat) {
 178    case 4:
 179    case GL_RGBA:
 180    case GL_RGBA8:
 181       return (format == GL_BGRA &&
 182               (type == GL_UNSIGNED_BYTE ||
 183                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 184               mesa_format == MESA_FORMAT_ARGB8888);
 185    case 3:
 186    case GL_RGB:
 187       return (format == GL_RGB &&
 188               type == GL_UNSIGNED_SHORT_5_6_5 &&
 189               mesa_format == MESA_FORMAT_RGB565);
 190    case 1:
 191    case GL_LUMINANCE:
 192       return (format == GL_LUMINANCE &&
 193               type == GL_UNSIGNED_BYTE &&
 194               mesa_format == MESA_FORMAT_L8);
 195    case GL_YCBCR_MESA:
 196       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 197    default:
 198       return GL_FALSE;
 199    }
 200 }
 201
 202
 203 /* XXX: Do this for TexSubImage also:
 204  */
 205 static GLboolean
 206 try_pbo_upload(struct intel_context *intel,
 207                struct intel_texture_image *intelImage,
 208                const struct gl_pixelstore_attrib *unpack,
 209                GLint internalFormat,
 210                GLint width, GLint height,
 211                GLenum format, GLenum type, const void *pixels)
 212 {
 213    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 214    GLuint src_offset, src_stride;
 215    GLuint dst_x, dst_y, dst_stride;
 216    dri_bo *dst_buffer = intel_region_buffer(intel,
 217                                             intelImage->mt->region,
 218                                             INTEL_WRITE_FULL);
 219
 220    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 221        intel->ctx._ImageTransferState ||
 222        unpack->SkipPixels || unpack->SkipRows) {
 223       DBG("%s: failure 1\n", __FUNCTION__);
 224       return GL_FALSE;
 225    }
 226
 227    /* note: potential 64-bit ptr to 32-bit int cast */
 228    src_offset = (GLuint) (unsigned long) pixels;
 229
 230    if (unpack->RowLength > 0)
 231       src_stride = unpack->RowLength;
 232    else
 233       src_stride = width;
 234
 235    intel_miptree_get_image_offset(intelImage->mt, intelImage->level,
 236                                   intelImage->face, 0,
 237                                   &dst_x, &dst_y);
 238
 239    dst_stride = intelImage->mt->pitch;
 240
 241    if (drm_intel_bo_references(intel->batch->buf, dst_buffer))
 242       intelFlush(&intel->ctx);
 243    {
 244       dri_bo *src_buffer = intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 245
 246       if (!intelEmitCopyBlit(intel,
 247                              intelImage->mt->cpp,
 248                              src_stride, src_buffer, src_offset, GL_FALSE,
 249                              dst_stride, dst_buffer, 0,
 250                              intelImage->mt->region->tiling,
 251                              0, 0, dst_x, dst_y, width, height,
 252                              GL_COPY)) {
 253          return GL_FALSE;
 254       }
 255    }
 256
 257    return GL_TRUE;
 258 }
 259
 260
 261 static GLboolean
 262 try_pbo_zcopy(struct intel_context *intel,
 263               struct intel_texture_image *intelImage,
 264               const struct gl_pixelstore_attrib *unpack,
 265               GLint internalFormat,
 266               GLint width, GLint height,
 267               GLenum format, GLenum type, const void *pixels)
 268 {
 269    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 270    GLuint src_offset, src_stride;
 271    GLuint dst_x, dst_y, dst_stride;
 272
 273    if (!_mesa_is_bufferobj(unpack->BufferObj) ||
 274        intel->ctx._ImageTransferState ||
 275        unpack->SkipPixels || unpack->SkipRows) {
 276       DBG("%s: failure 1\n", __FUNCTION__);
 277       return GL_FALSE;
 278    }
 279
 280    /* note: potential 64-bit ptr to 32-bit int cast */
 281    src_offset = (GLuint) (unsigned long) pixels;
 282
 283    if (unpack->RowLength > 0)
 284       src_stride = unpack->RowLength;
 285    else
 286       src_stride = width;
 287
 288    intel_miptree_get_image_offset(intelImage->mt, intelImage->level,
 289                                   intelImage->face, 0,
 290                                   &dst_x, &dst_y);
 291
 292    dst_stride = intelImage->mt->pitch;
 293
 294    if (src_stride != dst_stride || dst_x != 0 || dst_y != 0 ||
 295        src_offset != 0) {
 296       DBG("%s: failure 2\n", __FUNCTION__);
 297       return GL_FALSE;
 298    }
 299
 300    intel_region_attach_pbo(intel, intelImage->mt->region, pbo);
 301
 302    return GL_TRUE;
 303 }
 304
 305
 306 static void
 307 intelTexImage(GLcontext * ctx,
 308               GLint dims,
 309               GLenum target, GLint level,
 310               GLint internalFormat,
 311               GLint width, GLint height, GLint depth,
 312               GLint border,
 313               GLenum format, GLenum type, const void *pixels,
 314               const struct gl_pixelstore_attrib *unpack,
 315               struct gl_texture_object *texObj,
 316               struct gl_texture_image *texImage, GLsizei imageSize,
 317               GLboolean compressed)
 318 {
 319    struct intel_context *intel = intel_context(ctx);
 320    struct intel_texture_object *intelObj = intel_texture_object(texObj);
 321    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 322    GLint postConvWidth = width;
 323    GLint postConvHeight = height;
 324    GLint texelBytes, sizeInBytes;
 325    GLuint dstRowStride = 0, srcRowStride = texImage->RowStride;
 326
 327    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 328        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 329
 330    intelImage->face = target_to_face(target);
 331    intelImage->level = level;
 332
 333    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 334       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 335                                          &postConvHeight);
 336    }
 337
 338    if (_mesa_is_format_compressed(texImage->TexFormat)) {
 339       texelBytes = 0;
 340    }
 341    else {
 342       texelBytes = _mesa_get_format_bytes(texImage->TexFormat);
 343
 344       /* Minimum pitch of 32 bytes */
 345       if (postConvWidth * texelBytes < 32) {
 346          postConvWidth = 32 / texelBytes;
 347          texImage->RowStride = postConvWidth;
 348       }
 349
 350       if (!intelImage->mt) {
 351           assert(texImage->RowStride == postConvWidth);
 352       }
 353    }
 354
 355    /* Release the reference to a potentially orphaned buffer.
 356     * Release any old malloced memory.
 357     */
 358    if (intelImage->mt) {
 359       intel_miptree_release(intel, &intelImage->mt);
 360       assert(!texImage->Data);
 361    }
 362    else if (texImage->Data) {
 363       _mesa_free_texmemory(texImage->Data);
 364       texImage->Data = NULL;
 365    }
 366
 367    /* If this is the only texture image in the tree, could call
 368     * bmBufferData with NULL data to free the old block and avoid
 369     * waiting on any outstanding fences.
 370     */
 371    if (intelObj->mt &&
 372        intelObj->mt->first_level == level &&
 373        intelObj->mt->last_level == level &&
 374        intelObj->mt->target != GL_TEXTURE_CUBE_MAP_ARB &&
 375        !intel_miptree_match_image(intelObj->mt, &intelImage->base)) {
 376
 377       DBG("release it\n");
 378       intel_miptree_release(intel, &intelObj->mt);
 379       assert(!intelObj->mt);
 380    }
 381
 382    if (!intelObj->mt) {
 383       guess_and_alloc_mipmap_tree(intel, intelObj, intelImage, pixels == NULL);
 384       if (!intelObj->mt) {
 385          DBG("guess_and_alloc_mipmap_tree: failed\n");
 386       }
 387    }
 388
 389    assert(!intelImage->mt);
 390
 391    if (intelObj->mt &&
 392        intel_miptree_match_image(intelObj->mt, &intelImage->base)) {
 393
 394       intel_miptree_reference(&intelImage->mt, intelObj->mt);
 395       assert(intelImage->mt);
 396    } else if (intelImage->base.Border == 0) {
 397       int comp_byte = 0;
 398       GLuint texelBytes = _mesa_get_format_bytes(intelImage->base.TexFormat);
 399       GLenum baseFormat = _mesa_get_format_base_format(intelImage->base.TexFormat);
 400       if (_mesa_is_format_compressed(intelImage->base.TexFormat)) {
 401          comp_byte =
 402             intel_compressed_num_bytes(intelImage->base.TexFormat);
 403       }
 404
 405       /* Didn't fit in the object miptree, but it's suitable for inclusion in
 406        * a miptree, so create one just for our level and store it in the image.
 407        * It'll get moved into the object miptree at validate time.
 408        */
 409       intelImage->mt = intel_miptree_create(intel, target,
 410                                             baseFormat,
 411                                             internalFormat,
 412                                             level, level,
 413                                             width, height, depth,
 414                                             texelBytes,
 415                                             comp_byte, pixels == NULL);
 416
 417    }
 418
 419    /* PBO fastpaths:
 420     */
 421    if (dims <= 2 &&
 422        intelImage->mt &&
 423        _mesa_is_bufferobj(unpack->BufferObj) &&
 424        check_pbo_format(internalFormat, format,
 425                         type, intelImage->base.TexFormat)) {
 426
 427       DBG("trying pbo upload\n");
 428
 429       /* Attempt to texture directly from PBO data (zero copy upload).
 430        *
 431        * Currently disable as it can lead to worse as well as better
 432        * performance (in particular when intel_region_cow() is
 433        * required).
 434        */
 435       if (intelObj->mt == intelImage->mt &&
 436           intelObj->mt->first_level == level &&
 437           intelObj->mt->last_level == level) {
 438
 439          if (try_pbo_zcopy(intel, intelImage, unpack,
 440                            internalFormat,
 441                            width, height, format, type, pixels)) {
 442
 443             DBG("pbo zcopy upload succeeded\n");
 444             return;
 445          }
 446       }
 447
 448
 449       /* Otherwise, attempt to use the blitter for PBO image uploads.
 450        */
 451       if (try_pbo_upload(intel, intelImage, unpack,
 452                          internalFormat,
 453                          width, height, format, type, pixels)) {
 454          DBG("pbo upload succeeded\n");
 455          return;
 456       }
 457
 458       DBG("pbo upload failed\n");
 459    }
 460
 461    /* intelCopyTexImage calls this function with pixels == NULL, with
 462     * the expectation that the mipmap tree will be set up but nothing
 463     * more will be done.  This is where those calls return:
 464     */
 465    if (compressed) {
 466       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 467                                                       unpack,
 468                                                       "glCompressedTexImage");
 469    } else {
 470       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 471                                            format, type,
 472                                            pixels, unpack, "glTexImage");
 473    }
 474
 475    if (intelImage->mt) {
 476       if (pixels != NULL) {
 477          /* Flush any queued rendering with the texture before mapping. */
 478          if (drm_intel_bo_references(intel->batch->buf,
 479                                      intelImage->mt->region->buffer)) {
 480             intelFlush(ctx);
 481          }
 482          texImage->Data = intel_miptree_image_map(intel,
 483                                                   intelImage->mt,
 484                                                   intelImage->face,
 485                                                   intelImage->level,
 486                                                   &dstRowStride,
 487                                                   intelImage->base.ImageOffsets);
 488       }
 489
 490       texImage->RowStride = dstRowStride / intelImage->mt->cpp;
 491    }
 492    else {
 493       /* Allocate regular memory and store the image there temporarily.   */
 494       if (_mesa_is_format_compressed(texImage->TexFormat)) {
 495          sizeInBytes = _mesa_format_image_size(texImage->TexFormat,
 496                                                texImage->Width,
 497                                                texImage->Height,
 498                                                texImage->Depth);
 499          dstRowStride =
 500             _mesa_format_row_stride(texImage->TexFormat, width);
 501          assert(dims != 3);
 502       }
 503       else {
 504          dstRowStride = postConvWidth * texelBytes;
 505          sizeInBytes = depth * dstRowStride * postConvHeight;
 506       }
 507
 508       texImage->Data = _mesa_alloc_texmemory(sizeInBytes);
 509    }
 510
 511    DBG("Upload image %dx%dx%d row_len %d "
 512        "pitch %d pixels %d compressed %d\n",
 513        width, height, depth, width * texelBytes, dstRowStride,
 514        pixels ? 1 : 0, compressed);
 515
 516    /* Copy data.  Would like to know when it's ok for us to eg. use
 517     * the blitter to copy.  Or, use the hardware to do the format
 518     * conversion and copy:
 519     */
 520    if (pixels) {
 521        if (compressed) {
 522            if (intelImage->mt) {
 523                struct intel_region *dst = intelImage->mt->region;
 524                _mesa_copy_rect(texImage->Data, dst->cpp, dst->pitch,
 525                                0, 0,
 526                                intelImage->mt->level[level].width,
 527                                (intelImage->mt->level[level].height+3)/4,
 528                                pixels,
 529                                srcRowStride,
 530                                0, 0);
 531            }
 532            else {
 533                memcpy(texImage->Data, pixels, imageSize);
 534            }
 535        }
 536        else if (!_mesa_texstore(ctx, dims,
 537                                 texImage->_BaseFormat,
 538                                 texImage->TexFormat,
 539                                 texImage->Data, 0, 0, 0, /* dstX/Y/Zoffset */
 540                                 dstRowStride,
 541                                 texImage->ImageOffsets,
 542                                 width, height, depth,
 543                                 format, type, pixels, unpack)) {
 544           _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 545        }
 546    }
 547
 548    _mesa_unmap_teximage_pbo(ctx, unpack);
 549
 550    if (intelImage->mt) {
 551       if (pixels != NULL)
 552          intel_miptree_image_unmap(intel, intelImage->mt);
 553       texImage->Data = NULL;
 554    }
 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    }
 671    else {
 672       _mesa_get_teximage(ctx, target, level, format, type, pixels,
 673                          texObj, texImage);
 674    }
 675
 676
 677    /* Unmap */
 678    if (intelImage->mt) {
 679       intel_miptree_image_unmap(intel, intelImage->mt);
 680       intelImage->base.Data = NULL;
 681    }
 682 }
 683
 684
 685 static void
 686 intelGetTexImage(GLcontext * ctx, GLenum target, GLint level,
 687                  GLenum format, GLenum type, GLvoid * pixels,
 688                  struct gl_texture_object *texObj,
 689                  struct gl_texture_image *texImage)
 690 {
 691    intel_get_tex_image(ctx, target, level, format, type, pixels,
 692                        texObj, texImage, GL_FALSE);
 693 }
 694
 695
 696 static void
 697 intelGetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 698                            GLvoid *pixels,
 699                            struct gl_texture_object *texObj,
 700                            struct gl_texture_image *texImage)
 701 {
 702    intel_get_tex_image(ctx, target, level, 0, 0, pixels,
 703                        texObj, texImage, GL_TRUE);
 704 }
 705
 706
 707 void
 708 intelSetTexOffset(__DRIcontext *pDRICtx, GLint texname,
 709                   unsigned long long offset, GLint depth, GLuint pitch)
 710 {
 711    struct intel_context *intel = pDRICtx->driverPrivate;
 712    struct gl_texture_object *tObj = _mesa_lookup_texture(&intel->ctx, texname);
 713    struct intel_texture_object *intelObj = intel_texture_object(tObj);
 714
 715    if (!intelObj)
 716       return;
 717
 718    if (intelObj->mt)
 719       intel_miptree_release(intel, &intelObj->mt);
 720
 721    intelObj->imageOverride = GL_TRUE;
 722    intelObj->depthOverride = depth;
 723    intelObj->pitchOverride = pitch;
 724
 725    if (offset)
 726       intelObj->textureOffset = offset;
 727 }
 728
 729 void
 730 intelSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
 731                    GLint texture_format,
 732                    __DRIdrawable *dPriv)
 733 {
 734    struct gl_framebuffer *fb = dPriv->driverPrivate;
 735    struct intel_context *intel = pDRICtx->driverPrivate;
 736    GLcontext *ctx = &intel->ctx;
 737    struct intel_texture_object *intelObj;
 738    struct intel_texture_image *intelImage;
 739    struct intel_mipmap_tree *mt;
 740    struct intel_renderbuffer *rb;
 741    struct gl_texture_object *texObj;
 742    struct gl_texture_image *texImage;
 743    int level = 0, internalFormat;
 744
 745    texObj = _mesa_get_current_tex_object(ctx, target);
 746    intelObj = intel_texture_object(texObj);
 747
 748    if (!intelObj)
 749       return;
 750
 751    if (dPriv->lastStamp != *dPriv->pStamp)
 752       intel_update_renderbuffers(pDRICtx, dPriv);
 753
 754    rb = intel_get_renderbuffer(fb, BUFFER_FRONT_LEFT);
 755    /* If the region isn't set, then intel_update_renderbuffers was unable
 756     * to get the buffers for the drawable.
 757     */
 758    if (rb->region == NULL)
 759       return;
 760
 761    if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
 762       internalFormat = GL_RGB;
 763    else
 764       internalFormat = GL_RGBA;
 765
 766    mt = intel_miptree_create_for_region(intel, target,
 767                                         internalFormat,
 768                                         0, 0, rb->region, 1, 0);
 769    if (mt == NULL)
 770        return;
 771
 772    _mesa_lock_texture(&intel->ctx, texObj);
 773
 774    texImage = _mesa_get_tex_image(&intel->ctx, texObj, target, level);
 775    intelImage = intel_texture_image(texImage);
 776
 777    if (intelImage->mt) {
 778       intel_miptree_release(intel, &intelImage->mt);
 779       assert(!texImage->Data);
 780    }
 781    if (intelObj->mt)
 782       intel_miptree_release(intel, &intelObj->mt);
 783
 784    intelObj->mt = mt;
 785    _mesa_init_teximage_fields(&intel->ctx, target, texImage,
 786                               rb->region->width, rb->region->height, 1,
 787                               0, internalFormat);
 788
 789    intelImage->face = target_to_face(target);
 790    intelImage->level = level;
 791    if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
 792       texImage->TexFormat = MESA_FORMAT_XRGB8888;
 793    else
 794       texImage->TexFormat = MESA_FORMAT_ARGB8888;
 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            fprintf(stderr, "miptree doesn't match image\n");
 800    }
 801
 802    _mesa_unlock_texture(&intel->ctx, texObj);
 803 }
 804
 805 void
 806 intelSetTexBuffer(__DRIcontext *pDRICtx, GLint target, __DRIdrawable *dPriv)
 807 {
 808    /* The old interface didn't have the format argument, so copy our
 809     * implementation's behavior at the time.
 810     */
 811    intelSetTexBuffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 812 }
 813
 814
 815 void
 816 intelInitTextureImageFuncs(struct dd_function_table *functions)
 817 {
 818    functions->TexImage1D = intelTexImage1D;
 819    functions->TexImage2D = intelTexImage2D;
 820    functions->TexImage3D = intelTexImage3D;
 821    functions->GetTexImage = intelGetTexImage;
 822
 823    functions->CompressedTexImage2D = intelCompressedTexImage2D;
 824    functions->GetCompressedTexImage = intelGetCompressedTexImage;
 825 }