src/mesa/state_tracker/st_cb_texture.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/imports.h"
  29 #include "main/convolve.h"
  30 #include "main/enums.h"
  31 #include "main/image.h"
  32 #include "main/macros.h"
  33 #include "main/texcompress.h"
  34 #include "main/texformat.h"
  35 #include "main/teximage.h"
  36 #include "main/texobj.h"
  37 #include "main/texstore.h"
  38
  39 #include "state_tracker/st_context.h"
  40 #include "state_tracker/st_cb_fbo.h"
  41 #include "state_tracker/st_cb_texture.h"
  42 #include "state_tracker/st_format.h"
  43 #include "state_tracker/st_texture.h"
  44
  45 #include "pipe/p_context.h"
  46 #include "pipe/p_defines.h"
  47 #include "pipe/p_inlines.h"
  48
  49
  50 #define DBG if (0) printf
  51
  52
  53 struct st_texture_object
  54 {
  55    struct gl_texture_object base;       /* The "parent" object */
  56
  57    /* The texture must include at least these levels once validated:
  58     */
  59    GLuint firstLevel;
  60    GLuint lastLevel;
  61
  62    /* Offset for firstLevel image:
  63     */
  64    GLuint textureOffset;
  65
  66    /* On validation any active images held in main memory or in other
  67     * regions will be copied to this region and the old storage freed.
  68     */
  69    struct pipe_texture *pt;
  70
  71    GLboolean imageOverride;
  72    GLint depthOverride;
  73    GLuint pitchOverride;
  74 };
  75
  76
  77
  78
  79 static INLINE struct st_texture_object *
  80 st_texture_object(struct gl_texture_object *obj)
  81 {
  82    return (struct st_texture_object *) obj;
  83 }
  84
  85 static INLINE struct st_texture_image *
  86 st_texture_image(struct gl_texture_image *img)
  87 {
  88    return (struct st_texture_image *) img;
  89 }
  90
  91
  92 struct pipe_texture *
  93 st_get_texobj_texture(struct gl_texture_object *texObj)
  94 {
  95    struct st_texture_object *stObj = st_texture_object(texObj);
  96    return stObj->pt;
  97 }
  98
  99
 100 static unsigned
 101 gl_target_to_pipe(GLenum target)
 102 {
 103    switch (target) {
 104    case GL_TEXTURE_1D:
 105       return PIPE_TEXTURE_1D;
 106
 107    case GL_TEXTURE_2D:
 108    case GL_TEXTURE_RECTANGLE_NV:
 109       return PIPE_TEXTURE_2D;
 110
 111    case GL_TEXTURE_3D:
 112       return PIPE_TEXTURE_3D;
 113
 114    case GL_TEXTURE_CUBE_MAP_ARB:
 115       return PIPE_TEXTURE_CUBE;
 116
 117    default:
 118       assert(0);
 119       return 0;
 120    }
 121 }
 122
 123
 124 static int
 125 compressed_num_bytes(GLuint mesaFormat)
 126 {
 127    int bytes = 0;
 128    switch(mesaFormat) {
 129
 130    case MESA_FORMAT_RGB_FXT1:
 131    case MESA_FORMAT_RGBA_FXT1:
 132    case MESA_FORMAT_RGB_DXT1:
 133    case MESA_FORMAT_RGBA_DXT1:
 134      bytes = 2;
 135      break;
 136
 137    case MESA_FORMAT_RGBA_DXT3:
 138    case MESA_FORMAT_RGBA_DXT5:
 139      bytes = 4;
 140    default:
 141      break;
 142    }
 143
 144    return bytes;
 145 }
 146
 147
 148
 149
 150 static GLboolean
 151 st_IsTextureResident(GLcontext * ctx, struct gl_texture_object *texObj)
 152 {
 153 #if 0
 154    struct intel_context *intel = intel_context(ctx);
 155    struct st_texture_object *stObj = st_texture_object(texObj);
 156
 157    return
 158       stObj->pt &&
 159       stObj->pt->region &&
 160       intel_is_region_resident(intel, stObj->pt->region);
 161 #endif
 162    return 1;
 163 }
 164
 165
 166
 167 static struct gl_texture_image *
 168 st_NewTextureImage(GLcontext * ctx)
 169 {
 170    DBG("%s\n", __FUNCTION__);
 171    (void) ctx;
 172    return (struct gl_texture_image *) CALLOC_STRUCT(st_texture_image);
 173 }
 174
 175
 176 static struct gl_texture_object *
 177 st_NewTextureObject(GLcontext * ctx, GLuint name, GLenum target)
 178 {
 179    struct st_texture_object *obj = CALLOC_STRUCT(st_texture_object);
 180
 181    DBG("%s\n", __FUNCTION__);
 182    _mesa_initialize_texture_object(&obj->base, name, target);
 183
 184    return &obj->base;
 185 }
 186
 187 static void
 188 st_DeleteTextureObject(GLcontext *ctx,
 189                          struct gl_texture_object *texObj)
 190 {
 191    struct st_texture_object *stObj = st_texture_object(texObj);
 192
 193    if (stObj->pt)
 194       ctx->st->pipe->texture_release(ctx->st->pipe, &stObj->pt);
 195
 196    _mesa_delete_texture_object(ctx, texObj);
 197 }
 198
 199
 200 static void
 201 st_FreeTextureImageData(GLcontext * ctx, struct gl_texture_image *texImage)
 202 {
 203    struct st_texture_image *stImage = st_texture_image(texImage);
 204
 205    DBG("%s\n", __FUNCTION__);
 206
 207    if (stImage->pt) {
 208       ctx->st->pipe->texture_release(ctx->st->pipe, &stImage->pt);
 209    }
 210
 211    if (texImage->Data) {
 212       free(texImage->Data);
 213       texImage->Data = NULL;
 214    }
 215 }
 216
 217
 218
 219
 220 /* ================================================================
 221  * From linux kernel i386 header files, copes with odd sizes better
 222  * than COPY_DWORDS would:
 223  * XXX Put this in src/mesa/main/imports.h ???
 224  */
 225 #if defined(i386) || defined(__i386__)
 226 static INLINE void *
 227 __memcpy(void *to, const void *from, size_t n)
 228 {
 229    int d0, d1, d2;
 230    __asm__ __volatile__("rep ; movsl\n\t"
 231                         "testb $2,%b4\n\t"
 232                         "je 1f\n\t"
 233                         "movsw\n"
 234                         "1:\ttestb $1,%b4\n\t"
 235                         "je 2f\n\t"
 236                         "movsb\n" "2:":"=&c"(d0), "=&D"(d1), "=&S"(d2)
 237                         :"0"(n / 4), "q"(n), "1"((long) to), "2"((long) from)
 238                         :"memory");
 239    return (to);
 240 }
 241 #else
 242 #define __memcpy(a,b,c) memcpy(a,b,c)
 243 #endif
 244
 245
 246 /* The system memcpy (at least on ubuntu 5.10) has problems copying
 247  * to agp (writecombined) memory from a source which isn't 64-byte
 248  * aligned - there is a 4x performance falloff.
 249  *
 250  * The x86 __memcpy is immune to this but is slightly slower
 251  * (10%-ish) than the system memcpy.
 252  *
 253  * The sse_memcpy seems to have a slight cliff at 64/32 bytes, but
 254  * isn't much faster than x86_memcpy for agp copies.
 255  *
 256  * TODO: switch dynamically.
 257  */
 258 static void *
 259 do_memcpy(void *dest, const void *src, size_t n)
 260 {
 261    if ((((unsigned) src) & 63) || (((unsigned) dest) & 63)) {
 262       return __memcpy(dest, src, n);
 263    }
 264    else
 265       return memcpy(dest, src, n);
 266 }
 267
 268
 269 /* Functions to store texture images.  Where possible, textures
 270  * will be created or further instantiated with image data, otherwise
 271  * images will be stored in malloc'd memory.  A validation step is
 272  * required to pull those images into a texture, or otherwise
 273  * decide a fallback is required.
 274  */
 275
 276
 277 static int
 278 logbase2(int n)
 279 {
 280    GLint i = 1;
 281    GLint log2 = 0;
 282
 283    while (n > i) {
 284       i *= 2;
 285       log2++;
 286    }
 287
 288    return log2;
 289 }
 290
 291
 292 /* Otherwise, store it in memory if (Border != 0) or (any dimension ==
 293  * 1).
 294  *
 295  * Otherwise, if max_level >= level >= min_level, create texture with
 296  * space for images from min_level down to max_level.
 297  *
 298  * Otherwise, create texture with space for images from (level 0)..(1x1).
 299  * Consider pruning this texture at a validation if the saving is worth it.
 300  */
 301 static void
 302 guess_and_alloc_texture(struct st_context *st,
 303                         struct st_texture_object *stObj,
 304                         struct st_texture_image *stImage)
 305 {
 306    GLuint firstLevel;
 307    GLuint lastLevel;
 308    GLuint width = stImage->base.Width;
 309    GLuint height = stImage->base.Height;
 310    GLuint depth = stImage->base.Depth;
 311    GLuint l2width, l2height, l2depth;
 312    GLuint i, comp_byte = 0;
 313
 314    DBG("%s\n", __FUNCTION__);
 315
 316    if (stImage->base.Border)
 317       return;
 318
 319    if (stImage->level > stObj->base.BaseLevel &&
 320        (stImage->base.Width == 1 ||
 321         (stObj->base.Target != GL_TEXTURE_1D &&
 322          stImage->base.Height == 1) ||
 323         (stObj->base.Target == GL_TEXTURE_3D &&
 324          stImage->base.Depth == 1)))
 325       return;
 326
 327    /* If this image disrespects BaseLevel, allocate from level zero.
 328     * Usually BaseLevel == 0, so it's unlikely to happen.
 329     */
 330    if (stImage->level < stObj->base.BaseLevel)
 331       firstLevel = 0;
 332    else
 333       firstLevel = stObj->base.BaseLevel;
 334
 335
 336    /* Figure out image dimensions at start level.
 337     */
 338    for (i = stImage->level; i > firstLevel; i--) {
 339       width <<= 1;
 340       if (height != 1)
 341          height <<= 1;
 342       if (depth != 1)
 343          depth <<= 1;
 344    }
 345
 346    /* Guess a reasonable value for lastLevel.  This is probably going
 347     * to be wrong fairly often and might mean that we have to look at
 348     * resizable buffers, or require that buffers implement lazy
 349     * pagetable arrangements.
 350     */
 351    if ((stObj->base.MinFilter == GL_NEAREST ||
 352         stObj->base.MinFilter == GL_LINEAR) &&
 353        stImage->level == firstLevel) {
 354       lastLevel = firstLevel;
 355    }
 356    else {
 357       l2width = logbase2(width);
 358       l2height = logbase2(height);
 359       l2depth = logbase2(depth);
 360       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 361    }
 362
 363    assert(!stObj->pt);
 364    if (stImage->base.IsCompressed)
 365       comp_byte = compressed_num_bytes(stImage->base.TexFormat->MesaFormat);
 366    stObj->pt = st_texture_create(st,
 367                                  gl_target_to_pipe(stObj->base.Target),
 368                                  st_mesa_format_to_pipe_format(stImage->base.TexFormat->MesaFormat),
 369                                  stImage->base.InternalFormat,
 370                                  firstLevel,
 371                                  lastLevel,
 372                                  width,
 373                                  height,
 374                                  depth,
 375                                  comp_byte);
 376
 377    DBG("%s - success\n", __FUNCTION__);
 378 }
 379
 380
 381
 382
 383 static GLuint
 384 target_to_face(GLenum target)
 385 {
 386    switch (target) {
 387    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
 388    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
 389    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
 390    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
 391    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
 392    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
 393       return ((GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X);
 394    default:
 395       return 0;
 396    }
 397 }
 398
 399
 400
 401 /* There are actually quite a few combinations this will work for,
 402  * more than what I've listed here.
 403  */
 404 static GLboolean
 405 check_pbo_format(GLint internalFormat,
 406                  GLenum format, GLenum type,
 407                  const struct gl_texture_format *mesa_format)
 408 {
 409    switch (internalFormat) {
 410    case 4:
 411    case GL_RGBA:
 412       return (format == GL_BGRA &&
 413               (type == GL_UNSIGNED_BYTE ||
 414                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 415               mesa_format == &_mesa_texformat_argb8888);
 416    case 3:
 417    case GL_RGB:
 418       return (format == GL_RGB &&
 419               type == GL_UNSIGNED_SHORT_5_6_5 &&
 420               mesa_format == &_mesa_texformat_rgb565);
 421    case GL_YCBCR_MESA:
 422       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 423    default:
 424       return GL_FALSE;
 425    }
 426 }
 427
 428
 429 /* XXX: Do this for TexSubImage also:
 430  */
 431 static GLboolean
 432 try_pbo_upload(GLcontext *ctx,
 433                struct st_texture_image *stImage,
 434                const struct gl_pixelstore_attrib *unpack,
 435                GLint internalFormat,
 436                GLint width, GLint height,
 437                GLenum format, GLenum type, const void *pixels)
 438 {
 439    return GL_FALSE;  /* XXX fix flushing/locking/blitting below */
 440 #if 000
 441    struct intel_context *intel = intel_context(ctx);
 442    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 443    GLuint src_offset, src_stride;
 444    GLuint dst_offset, dst_stride;
 445
 446    if (!pbo ||
 447        ctx._ImageTransferState ||
 448        unpack->SkipPixels || unpack->SkipRows) {
 449       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 450       return GL_FALSE;
 451    }
 452
 453    src_offset = (GLuint) pixels;
 454
 455    if (unpack->RowLength > 0)
 456       src_stride = unpack->RowLength;
 457    else
 458       src_stride = width;
 459
 460    dst_offset = st_texture_image_offset(stImage->pt,
 461                                            stImage->face,
 462                                            stImage->level);
 463
 464    dst_stride = stImage->pt->pitch;
 465
 466    {
 467       struct _DriBufferObject *src_buffer =
 468          intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 469
 470       /* Temporary hack: cast to _DriBufferObject:
 471        */
 472       struct _DriBufferObject *dst_buffer =
 473          (struct _DriBufferObject *)stImage->pt->region->buffer;
 474
 475
 476       intelEmitCopyBlit(intel,
 477                         stImage->pt->cpp,
 478                         src_stride, src_buffer, src_offset,
 479                         dst_stride, dst_buffer, dst_offset,
 480                         0, 0, 0, 0, width, height,
 481                         GL_COPY);
 482    }
 483
 484    return GL_TRUE;
 485 #endif
 486 }
 487
 488
 489
 490 static GLboolean
 491 try_pbo_zcopy(GLcontext *ctx,
 492               struct st_texture_image *stImage,
 493               const struct gl_pixelstore_attrib *unpack,
 494               GLint internalFormat,
 495               GLint width, GLint height,
 496               GLenum format, GLenum type, const void *pixels)
 497 {
 498    return GL_FALSE;
 499 }
 500
 501
 502
 503
 504
 505
 506 static void
 507 st_TexImage(GLcontext * ctx,
 508               GLint dims,
 509               GLenum target, GLint level,
 510               GLint internalFormat,
 511               GLint width, GLint height, GLint depth,
 512               GLint border,
 513               GLenum format, GLenum type, const void *pixels,
 514               const struct gl_pixelstore_attrib *unpack,
 515               struct gl_texture_object *texObj,
 516               struct gl_texture_image *texImage, GLsizei imageSize, int compressed)
 517 {
 518    struct st_texture_object *stObj = st_texture_object(texObj);
 519    struct st_texture_image *stImage = st_texture_image(texImage);
 520    GLint postConvWidth = width;
 521    GLint postConvHeight = height;
 522    GLint texelBytes, sizeInBytes;
 523    GLuint dstRowStride;
 524
 525
 526    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 527        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 528
 529    stImage->face = target_to_face(target);
 530    stImage->level = level;
 531
 532    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 533       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 534                                          &postConvHeight);
 535    }
 536
 537    /* choose the texture format */
 538    texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat,
 539                                                   format, type);
 540
 541    _mesa_set_fetch_functions(texImage, dims);
 542
 543    if (texImage->TexFormat->TexelBytes == 0) {
 544       /* must be a compressed format */
 545       texelBytes = 0;
 546       texImage->IsCompressed = GL_TRUE;
 547       texImage->CompressedSize =
 548          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 549                                            texImage->Height, texImage->Depth,
 550                                            texImage->TexFormat->MesaFormat);
 551    } else {
 552       texelBytes = texImage->TexFormat->TexelBytes;
 553
 554       /* Minimum pitch of 32 bytes */
 555       if (postConvWidth * texelBytes < 32) {
 556          postConvWidth = 32 / texelBytes;
 557          texImage->RowStride = postConvWidth;
 558       }
 559
 560       assert(texImage->RowStride == postConvWidth);
 561    }
 562
 563    /* Release the reference to a potentially orphaned buffer.
 564     * Release any old malloced memory.
 565     */
 566    if (stImage->pt) {
 567       ctx->st->pipe->texture_release(ctx->st->pipe, &stImage->pt);
 568       assert(!texImage->Data);
 569    }
 570    else if (texImage->Data) {
 571       _mesa_align_free(texImage->Data);
 572    }
 573
 574    /* If this is the only texture image in the texture, could call
 575     * bmBufferData with NULL data to free the old block and avoid
 576     * waiting on any outstanding fences.
 577     */
 578    if (stObj->pt &&
 579        stObj->pt->first_level == level &&
 580        stObj->pt->last_level == level &&
 581        stObj->pt->target != PIPE_TEXTURE_CUBE &&
 582        !st_texture_match_image(stObj->pt, &stImage->base,
 583                                   stImage->face, stImage->level)) {
 584
 585       DBG("release it\n");
 586       ctx->st->pipe->texture_release(ctx->st->pipe, &stObj->pt);
 587       assert(!stObj->pt);
 588    }
 589
 590    if (!stObj->pt) {
 591       guess_and_alloc_texture(ctx->st, stObj, stImage);
 592       if (!stObj->pt) {
 593          DBG("guess_and_alloc_texture: failed\n");
 594       }
 595    }
 596
 597    assert(!stImage->pt);
 598
 599    if (stObj->pt &&
 600        st_texture_match_image(stObj->pt, &stImage->base,
 601                                  stImage->face, stImage->level)) {
 602
 603       pipe_texture_reference(ctx->st->pipe, &stImage->pt, stObj->pt);
 604       assert(stImage->pt);
 605    }
 606
 607    if (!stImage->pt)
 608       DBG("XXX: Image did not fit into texture - storing in local memory!\n");
 609
 610 #if 0 /* XXX FIX when st_buffer_objects are in place */
 611    /* PBO fastpaths:
 612     */
 613    if (dims <= 2 &&
 614        stImage->pt &&
 615        intel_buffer_object(unpack->BufferObj) &&
 616        check_pbo_format(internalFormat, format,
 617                         type, texImage->TexFormat)) {
 618
 619       DBG("trying pbo upload\n");
 620
 621       /* Attempt to texture directly from PBO data (zero copy upload).
 622        *
 623        * Currently disable as it can lead to worse as well as better
 624        * performance (in particular when pipe_region_cow() is
 625        * required).
 626        */
 627       if (stObj->pt == stImage->pt &&
 628           stObj->pt->first_level == level &&
 629           stObj->pt->last_level == level) {
 630
 631          if (try_pbo_zcopy(intel, stImage, unpack,
 632                            internalFormat,
 633                            width, height, format, type, pixels)) {
 634
 635             DBG("pbo zcopy upload succeeded\n");
 636             return;
 637          }
 638       }
 639
 640
 641       /* Otherwise, attempt to use the blitter for PBO image uploads.
 642        */
 643       if (try_pbo_upload(intel, stImage, unpack,
 644                          internalFormat,
 645                          width, height, format, type, pixels)) {
 646          DBG("pbo upload succeeded\n");
 647          return;
 648       }
 649
 650       DBG("pbo upload failed\n");
 651    }
 652 #else
 653    (void) try_pbo_upload;
 654    (void) check_pbo_format;
 655    (void) try_pbo_zcopy;
 656 #endif
 657
 658
 659    /* st_CopyTexImage calls this function with pixels == NULL, with
 660     * the expectation that the texture will be set up but nothing
 661     * more will be done.  This is where those calls return:
 662     */
 663    if (compressed) {
 664       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 665                                                       unpack,
 666                                                       "glCompressedTexImage");
 667    } else {
 668       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 669                                            format, type,
 670                                            pixels, unpack, "glTexImage");
 671    }
 672    if (!pixels)
 673       return;
 674
 675    if (stImage->pt) {
 676       texImage->Data = st_texture_image_map(ctx->st, stImage, 0);
 677       dstRowStride = stImage->surface->pitch * stImage->surface->cpp;
 678    }
 679    else {
 680       /* Allocate regular memory and store the image there temporarily.   */
 681       if (texImage->IsCompressed) {
 682          sizeInBytes = texImage->CompressedSize;
 683          dstRowStride =
 684             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 685          assert(dims != 3);
 686       }
 687       else {
 688          dstRowStride = postConvWidth * texelBytes;
 689          sizeInBytes = depth * dstRowStride * postConvHeight;
 690       }
 691
 692       texImage->Data = malloc(sizeInBytes);
 693    }
 694
 695    DBG("Upload image %dx%dx%d row_len %x pitch %x\n",
 696        width, height, depth, width * texelBytes, dstRowStride);
 697
 698    /* Copy data.  Would like to know when it's ok for us to eg. use
 699     * the blitter to copy.  Or, use the hardware to do the format
 700     * conversion and copy:
 701     */
 702    if (compressed) {
 703      memcpy(texImage->Data, pixels, imageSize);
 704    }
 705    else {
 706       GLuint srcImageStride = _mesa_image_image_stride(unpack, width, height,
 707                                                        format, type);
 708       int i;
 709
 710       for (i = 0; i++ < depth;) {
 711          if (!texImage->TexFormat->StoreImage(ctx, dims,
 712                                               texImage->_BaseFormat,
 713                                               texImage->TexFormat,
 714                                               texImage->Data,
 715                                               0, 0, 0, /* dstX/Y/Zoffset */
 716                                               dstRowStride,
 717                                               texImage->ImageOffsets,
 718                                               width, height, 1,
 719                                               format, type, pixels, unpack)) {
 720             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 721          }
 722
 723          if (stImage->pt && i < depth) {
 724             st_texture_image_unmap(ctx->st, stImage);
 725             texImage->Data = st_texture_image_map(ctx->st, stImage, i);
 726             pixels += srcImageStride;
 727          }
 728       }
 729    }
 730
 731    _mesa_unmap_teximage_pbo(ctx, unpack);
 732
 733    if (stImage->pt) {
 734       st_texture_image_unmap(ctx->st, stImage);
 735       texImage->Data = NULL;
 736    }
 737
 738 #if 0
 739    /* GL_SGIS_generate_mipmap -- this can be accelerated now.
 740     */
 741    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 742       intel_generate_mipmap(ctx, target,
 743                             &ctx->Texture.Unit[ctx->Texture.CurrentUnit],
 744                             texObj);
 745    }
 746 #endif
 747 }
 748
 749
 750 static void
 751 st_TexImage3D(GLcontext * ctx,
 752                 GLenum target, GLint level,
 753                 GLint internalFormat,
 754                 GLint width, GLint height, GLint depth,
 755                 GLint border,
 756                 GLenum format, GLenum type, const void *pixels,
 757                 const struct gl_pixelstore_attrib *unpack,
 758                 struct gl_texture_object *texObj,
 759                 struct gl_texture_image *texImage)
 760 {
 761    st_TexImage(ctx, 3, target, level,
 762                  internalFormat, width, height, depth, border,
 763                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 764 }
 765
 766
 767 static void
 768 st_TexImage2D(GLcontext * ctx,
 769                 GLenum target, GLint level,
 770                 GLint internalFormat,
 771                 GLint width, GLint height, GLint border,
 772                 GLenum format, GLenum type, const void *pixels,
 773                 const struct gl_pixelstore_attrib *unpack,
 774                 struct gl_texture_object *texObj,
 775                 struct gl_texture_image *texImage)
 776 {
 777    st_TexImage(ctx, 2, target, level,
 778                  internalFormat, width, height, 1, border,
 779                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 780 }
 781
 782
 783 static void
 784 st_TexImage1D(GLcontext * ctx,
 785                 GLenum target, GLint level,
 786                 GLint internalFormat,
 787                 GLint width, GLint border,
 788                 GLenum format, GLenum type, const void *pixels,
 789                 const struct gl_pixelstore_attrib *unpack,
 790                 struct gl_texture_object *texObj,
 791                 struct gl_texture_image *texImage)
 792 {
 793    st_TexImage(ctx, 1, target, level,
 794                  internalFormat, width, 1, 1, border,
 795                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 796 }
 797
 798
 799 static void
 800 st_CompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 801                                 GLint internalFormat,
 802                                 GLint width, GLint height, GLint border,
 803                                 GLsizei imageSize, const GLvoid *data,
 804                                 struct gl_texture_object *texObj,
 805                                 struct gl_texture_image *texImage )
 806 {
 807    st_TexImage(ctx, 2, target, level,
 808                  internalFormat, width, height, 1, border,
 809                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, 1);
 810 }
 811
 812
 813 /**
 814  * Need to map texture image into memory before copying image data,
 815  * then unmap it.
 816  */
 817 static void
 818 st_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 819                  GLenum format, GLenum type, GLvoid * pixels,
 820                  struct gl_texture_object *texObj,
 821                  struct gl_texture_image *texImage, int compressed)
 822 {
 823    struct st_texture_image *stImage = st_texture_image(texImage);
 824    GLuint dstImageStride = _mesa_image_image_stride(&ctx->Pack, texImage->Width,
 825                                                     texImage->Height, format,
 826                                                     type);
 827    GLuint depth;
 828    int i;
 829
 830    /* Map */
 831    if (stImage->pt) {
 832       /* Image is stored in hardware format in a buffer managed by the
 833        * kernel.  Need to explicitly map and unmap it.
 834        */
 835       texImage->Data = st_texture_image_map(ctx->st, stImage, 0);
 836       texImage->RowStride = stImage->surface->pitch;
 837    }
 838    else {
 839       /* Otherwise, the image should actually be stored in
 840        * texImage->Data.  This is pretty confusing for
 841        * everybody, I'd much prefer to separate the two functions of
 842        * texImage->Data - storage for texture images in main memory
 843        * and access (ie mappings) of images.  In other words, we'd
 844        * create a new texImage->Map field and leave Data simply for
 845        * storage.
 846        */
 847       assert(texImage->Data);
 848    }
 849
 850    depth = texImage->Depth;
 851    texImage->Depth = 1;
 852
 853    for (i = 0; i++ < depth;) {
 854       if (compressed) {
 855          _mesa_get_compressed_teximage(ctx, target, level, pixels,
 856                                        texObj, texImage);
 857       } else {
 858          _mesa_get_teximage(ctx, target, level, format, type, pixels,
 859                             texObj, texImage);
 860       }
 861
 862       if (stImage->pt && i < depth) {
 863          st_texture_image_unmap(ctx->st, stImage);
 864          texImage->Data = st_texture_image_map(ctx->st, stImage, i);
 865          pixels += dstImageStride;
 866       }
 867    }
 868
 869    texImage->Depth = depth;
 870
 871    /* Unmap */
 872    if (stImage->pt) {
 873       st_texture_image_unmap(ctx->st, stImage);
 874       texImage->Data = NULL;
 875    }
 876 }
 877
 878
 879 static void
 880 st_GetTexImage(GLcontext * ctx, GLenum target, GLint level,
 881                  GLenum format, GLenum type, GLvoid * pixels,
 882                  struct gl_texture_object *texObj,
 883                  struct gl_texture_image *texImage)
 884 {
 885    st_get_tex_image(ctx, target, level, format, type, pixels,
 886                     texObj, texImage, 0);
 887 }
 888
 889
 890 static void
 891 st_GetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 892                            GLvoid *pixels,
 893                            const struct gl_texture_object *texObj,
 894                            const struct gl_texture_image *texImage)
 895 {
 896    st_get_tex_image(ctx, target, level, 0, 0, pixels,
 897                     (struct gl_texture_object *) texObj,
 898                     (struct gl_texture_image *) texImage, 1);
 899 }
 900
 901
 902
 903 static void
 904 st_TexSubimage(GLcontext * ctx,
 905                  GLint dims,
 906                  GLenum target, GLint level,
 907                  GLint xoffset, GLint yoffset, GLint zoffset,
 908                  GLint width, GLint height, GLint depth,
 909                  GLenum format, GLenum type, const void *pixels,
 910                  const struct gl_pixelstore_attrib *packing,
 911                  struct gl_texture_object *texObj,
 912                  struct gl_texture_image *texImage)
 913 {
 914    struct st_texture_image *stImage = st_texture_image(texImage);
 915    GLuint dstRowStride;
 916    GLuint srcImageStride = _mesa_image_image_stride(packing, width, height,
 917                                                     format, type);
 918    int i;
 919
 920    DBG("%s target %s level %d offset %d,%d %dx%d\n", __FUNCTION__,
 921        _mesa_lookup_enum_by_nr(target),
 922        level, xoffset, yoffset, width, height);
 923
 924    pixels =
 925       _mesa_validate_pbo_teximage(ctx, dims, width, height, depth, format,
 926                                   type, pixels, packing, "glTexSubImage2D");
 927    if (!pixels)
 928       return;
 929
 930    /* Map buffer if necessary.  Need to lock to prevent other contexts
 931     * from uploading the buffer under us.
 932     */
 933    if (stImage->pt) {
 934       texImage->Data = st_texture_image_map(ctx->st, stImage, zoffset);
 935       dstRowStride = stImage->surface->pitch * stImage->surface->cpp;
 936    }
 937
 938    for (i = 0; i++ < depth;) {
 939       if (!texImage->TexFormat->StoreImage(ctx, dims, texImage->_BaseFormat,
 940                                            texImage->TexFormat,
 941                                            texImage->Data,
 942                                            xoffset, yoffset, 0,
 943                                            dstRowStride,
 944                                            texImage->ImageOffsets,
 945                                            width, height, 1,
 946                                            format, type, pixels, packing)) {
 947          _mesa_error(ctx, GL_OUT_OF_MEMORY, "st_TexSubImage");
 948       }
 949
 950       if (stImage->pt && i < depth) {
 951          st_texture_image_unmap(ctx->st, stImage);
 952          texImage->Data = st_texture_image_map(ctx->st, stImage, zoffset + i);
 953          pixels += srcImageStride;
 954       }
 955    }
 956
 957 #if 0
 958    /* GL_SGIS_generate_mipmap */
 959    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 960       _mesa_generate_mipmap(ctx, target,
 961                             &ctx->Texture.Unit[ctx->Texture.CurrentUnit],
 962                             texObj);
 963    }
 964 #endif
 965
 966    _mesa_unmap_teximage_pbo(ctx, packing);
 967
 968    if (stImage->pt) {
 969       st_texture_image_unmap(ctx->st, stImage);
 970       texImage->Data = NULL;
 971    }
 972 }
 973
 974
 975
 976 static void
 977 st_TexSubImage3D(GLcontext * ctx,
 978                    GLenum target,
 979                    GLint level,
 980                    GLint xoffset, GLint yoffset, GLint zoffset,
 981                    GLsizei width, GLsizei height, GLsizei depth,
 982                    GLenum format, GLenum type,
 983                    const GLvoid * pixels,
 984                    const struct gl_pixelstore_attrib *packing,
 985                    struct gl_texture_object *texObj,
 986                    struct gl_texture_image *texImage)
 987 {
 988    st_TexSubimage(ctx, 3, target, level,
 989                   xoffset, yoffset, zoffset,
 990                   width, height, depth,
 991                   format, type, pixels, packing, texObj, texImage);
 992 }
 993
 994
 995
 996 static void
 997 st_TexSubImage2D(GLcontext * ctx,
 998                    GLenum target,
 999                    GLint level,
1000                    GLint xoffset, GLint yoffset,
1001                    GLsizei width, GLsizei height,
1002                    GLenum format, GLenum type,
1003                    const GLvoid * pixels,
1004                    const struct gl_pixelstore_attrib *packing,
1005                    struct gl_texture_object *texObj,
1006                    struct gl_texture_image *texImage)
1007 {
1008    st_TexSubimage(ctx, 2, target, level,
1009                   xoffset, yoffset, 0,
1010                   width, height, 1,
1011                   format, type, pixels, packing, texObj, texImage);
1012 }
1013
1014
1015 static void
1016 st_TexSubImage1D(GLcontext * ctx,
1017                    GLenum target,
1018                    GLint level,
1019                    GLint xoffset,
1020                    GLsizei width,
1021                    GLenum format, GLenum type,
1022                    const GLvoid * pixels,
1023                    const struct gl_pixelstore_attrib *packing,
1024                    struct gl_texture_object *texObj,
1025                    struct gl_texture_image *texImage)
1026 {
1027    st_TexSubimage(ctx, 1, target, level,
1028                   xoffset, 0, 0,
1029                   width, 1, 1,
1030                   format, type, pixels, packing, texObj, texImage);
1031 }
1032
1033
1034
1035 /**
1036  * Return 0 for GL_TEXTURE_CUBE_MAP_POSITIVE_X,
1037  *        1 for GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
1038  *        etc.
1039  * XXX duplicated from main/teximage.c
1040  */
1041 static uint
1042 texture_face(GLenum target)
1043 {
1044    if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
1045        target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)
1046       return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
1047    else
1048       return 0;
1049 }
1050
1051
1052
1053 /**
1054  * Do a CopyTexSubImage operation by mapping the source region and
1055  * dest region and using get_tile()/put_tile() to access the pixels/texels.
1056  *
1057  * Note: srcY=0=TOP of renderbuffer
1058  */
1059 static void
1060 fallback_copy_texsubimage(GLcontext *ctx,
1061                           GLenum target,
1062                           GLint level,
1063                           struct st_renderbuffer *strb,
1064                           struct st_texture_image *stImage,
1065                           GLenum baseFormat,
1066                           GLint destX, GLint destY, GLint destZ,
1067                           GLint srcX, GLint srcY,
1068                           GLsizei width, GLsizei height)
1069 {
1070    struct pipe_context *pipe = ctx->st->pipe;
1071    const uint face = texture_face(target);
1072    struct pipe_texture *pt = stImage->pt;
1073    struct pipe_surface *src_surf, *dest_surf;
1074    GLfloat *data;
1075    GLint row, yStep;
1076
1077    /* determine bottom-to-top vs. top-to-bottom order */
1078    if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1079       destY = height - 1 - destY;
1080       yStep = -1;
1081    }
1082    else {
1083       yStep = 1;
1084    }
1085
1086    src_surf = strb->surface;
1087
1088    dest_surf = pipe->get_tex_surface(pipe, pt,
1089                                     face, level, destZ);
1090
1091    (void) pipe->region_map(pipe, dest_surf->region);
1092    (void) pipe->region_map(pipe, src_surf->region);
1093
1094    /* buffer for one row */
1095    data = (GLfloat *) malloc(width * 4 * sizeof(GLfloat));
1096
1097    /* do copy row by row */
1098    for (row = 0; row < height; row++) {
1099       pipe->get_tile_rgba(pipe, src_surf, srcX, srcY + row, width, 1, data);
1100
1101       /* XXX we're ignoring convolution for now */
1102       if (ctx->_ImageTransferState) {
1103          _mesa_apply_rgba_transfer_ops(ctx,
1104                             ctx->_ImageTransferState & ~IMAGE_CONVOLUTION_BIT,
1105                             width, (GLfloat (*)[4])data);
1106       }
1107
1108       pipe->put_tile_rgba(pipe, dest_surf, destX, destY, width, 1, data);
1109       destY += yStep;
1110    }
1111
1112
1113    (void) pipe->region_unmap(pipe, dest_surf->region);
1114    (void) pipe->region_unmap(pipe, src_surf->region);
1115
1116    free(data);
1117 }
1118
1119
1120
1121
1122 /**
1123  * Do a CopyTex[Sub]Image using an optimized hardware (blit) path.
1124  * Note that the region to copy has already been clip tested.
1125  *
1126  * Note: srcY=0=Bottom of renderbuffer
1127  *
1128  * \return GL_TRUE if success, GL_FALSE if failure (use a fallback)
1129  */
1130 static void
1131 do_copy_texsubimage(GLcontext *ctx,
1132                     GLenum target, GLint level,
1133                     GLint destX, GLint destY, GLint destZ,
1134                     GLint srcX, GLint srcY,
1135                     GLsizei width, GLsizei height)
1136 {
1137    struct gl_texture_unit *texUnit =
1138       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1139    struct gl_texture_object *texObj =
1140       _mesa_select_tex_object(ctx, texUnit, target);
1141    struct gl_texture_image *texImage =
1142       _mesa_select_tex_image(ctx, texObj, target, level);
1143    struct st_texture_image *stImage = st_texture_image(texImage);
1144    GLenum baseFormat = texImage->InternalFormat;
1145    struct gl_framebuffer *fb = ctx->ReadBuffer;
1146    struct st_renderbuffer *strb;
1147    struct pipe_context *pipe = ctx->st->pipe;
1148    struct pipe_surface *dest_surface;
1149    uint dest_format, src_format;
1150
1151    (void) texImage;
1152
1153    /* determine if copying depth or color data */
1154    if (baseFormat == GL_DEPTH_COMPONENT) {
1155       strb = st_renderbuffer(fb->_DepthBuffer);
1156    }
1157    else if (baseFormat == GL_DEPTH_STENCIL_EXT) {
1158       strb = st_renderbuffer(fb->_StencilBuffer);
1159    }
1160    else {
1161       /* baseFormat == GL_RGB, GL_RGBA, GL_ALPHA, etc */
1162       strb = st_renderbuffer(fb->_ColorReadBuffer);
1163    }
1164
1165    assert(strb);
1166    assert(strb->surface);
1167    assert(stImage->pt);
1168
1169    if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1170       srcY = strb->Base.Height - srcY - height;
1171    }
1172
1173    src_format = strb->surface->format;
1174    dest_format = stImage->pt->format;
1175
1176    dest_surface = pipe->get_tex_surface(pipe, stImage->pt, stImage->face,
1177                                         stImage->level, destZ);
1178
1179    if (src_format == dest_format &&
1180        ctx->_ImageTransferState == 0x0 &&
1181        strb->surface->region &&
1182        dest_surface->region &&
1183        strb->surface->cpp == stImage->pt->cpp) {
1184       /* do blit-style copy */
1185
1186       /* XXX may need to invert image depending on window
1187        * vs. user-created FBO
1188        */
1189
1190 #if 0
1191       /* A bit of fiddling to get the blitter to work with -ve
1192        * pitches.  But we get a nice inverted blit this way, so it's
1193        * worth it:
1194        */
1195       intelEmitCopyBlit(intel,
1196                         stImage->pt->cpp,
1197                         -src->pitch,
1198                         src->buffer,
1199                         src->height * src->pitch * src->cpp,
1200                         stImage->pt->pitch,
1201                         stImage->pt->region->buffer,
1202                         dest_offset,
1203                         x, y + height, dstx, dsty, width, height,
1204                         GL_COPY); /* ? */
1205 #else
1206
1207       pipe->surface_copy(pipe,
1208                          /* dest */
1209                          dest_surface,
1210                          destX, destY,
1211                          /* src */
1212                          strb->surface,
1213                          srcX, srcY,
1214                          /* size */
1215                          width, height);
1216 #endif
1217    }
1218    else {
1219       fallback_copy_texsubimage(ctx, target, level,
1220                                 strb, stImage, baseFormat,
1221                                 destX, destY, destZ,
1222                                 srcX, srcY, width, height);
1223    }
1224
1225    pipe_surface_reference(&dest_surface, NULL);
1226
1227 #if 0
1228    /* GL_SGIS_generate_mipmap -- this can be accelerated now.
1229     * XXX Add a ctx->Driver.GenerateMipmaps() function?
1230     */
1231    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
1232       intel_generate_mipmap(ctx, target,
1233                             &ctx->Texture.Unit[ctx->Texture.CurrentUnit],
1234                             texObj);
1235    }
1236 #endif
1237
1238 }
1239
1240
1241
1242 static void
1243 st_CopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
1244                   GLenum internalFormat,
1245                   GLint x, GLint y, GLsizei width, GLint border)
1246 {
1247    struct gl_texture_unit *texUnit =
1248       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1249    struct gl_texture_object *texObj =
1250       _mesa_select_tex_object(ctx, texUnit, target);
1251    struct gl_texture_image *texImage =
1252       _mesa_select_tex_image(ctx, texObj, target, level);
1253
1254 #if 0
1255    if (border)
1256       goto fail;
1257 #endif
1258
1259    /* Setup or redefine the texture object, texture and texture
1260     * image.  Don't populate yet.
1261     */
1262    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
1263                           width, border,
1264                           GL_RGBA, CHAN_TYPE, NULL,
1265                           &ctx->DefaultPacking, texObj, texImage);
1266
1267    do_copy_texsubimage(ctx, target, level,
1268                        0, 0, 0,
1269                        x, y, width, 1);
1270 }
1271
1272
1273 static void
1274 st_CopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
1275                   GLenum internalFormat,
1276                   GLint x, GLint y, GLsizei width, GLsizei height,
1277                   GLint border)
1278 {
1279    struct gl_texture_unit *texUnit =
1280       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1281    struct gl_texture_object *texObj =
1282       _mesa_select_tex_object(ctx, texUnit, target);
1283    struct gl_texture_image *texImage =
1284       _mesa_select_tex_image(ctx, texObj, target, level);
1285
1286 #if 0
1287    if (border)
1288       goto fail;
1289 #endif
1290
1291    /* Setup or redefine the texture object, texture and texture
1292     * image.  Don't populate yet.
1293     */
1294    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
1295                           width, height, border,
1296                           GL_RGBA, CHAN_TYPE, NULL,
1297                           &ctx->DefaultPacking, texObj, texImage);
1298
1299
1300    do_copy_texsubimage(ctx, target, level,
1301                        0, 0, 0,
1302                        x, y, width, height);
1303 }
1304
1305
1306 static void
1307 st_CopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
1308                      GLint xoffset, GLint x, GLint y, GLsizei width)
1309 {
1310    const GLint yoffset = 0, zoffset = 0;
1311    const GLsizei height = 1;
1312    do_copy_texsubimage(ctx, target, level,
1313                        xoffset, yoffset, zoffset,
1314                        x, y, width, height);
1315 }
1316
1317
1318 static void
1319 st_CopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
1320                      GLint xoffset, GLint yoffset,
1321                      GLint x, GLint y, GLsizei width, GLsizei height)
1322 {
1323    const GLint zoffset = 0;
1324    do_copy_texsubimage(ctx, target, level,
1325                        xoffset, yoffset, zoffset,
1326                        x, y, width, height);
1327 }
1328
1329
1330 static void
1331 st_CopyTexSubImage3D(GLcontext * ctx, GLenum target, GLint level,
1332                      GLint xoffset, GLint yoffset, GLint zoffset,
1333                      GLint x, GLint y, GLsizei width, GLsizei height)
1334 {
1335    do_copy_texsubimage(ctx, target, level,
1336                        xoffset, yoffset, zoffset,
1337                        x, y, width, height);
1338 }
1339
1340
1341
1342
1343 /**
1344  * Compute which mipmap levels that really need to be sent to the hardware.
1345  * This depends on the base image size, GL_TEXTURE_MIN_LOD,
1346  * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
1347  */
1348 static void
1349 calculate_first_last_level(struct st_texture_object *stObj)
1350 {
1351    struct gl_texture_object *tObj = &stObj->base;
1352    const struct gl_texture_image *const baseImage =
1353       tObj->Image[0][tObj->BaseLevel];
1354
1355    /* These must be signed values.  MinLod and MaxLod can be negative numbers,
1356     * and having firstLevel and lastLevel as signed prevents the need for
1357     * extra sign checks.
1358     */
1359    int firstLevel;
1360    int lastLevel;
1361
1362    /* Yes, this looks overly complicated, but it's all needed.
1363     */
1364    switch (tObj->Target) {
1365    case GL_TEXTURE_1D:
1366    case GL_TEXTURE_2D:
1367    case GL_TEXTURE_3D:
1368    case GL_TEXTURE_CUBE_MAP:
1369       if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
1370          /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
1371           */
1372          firstLevel = lastLevel = tObj->BaseLevel;
1373       }
1374       else {
1375          firstLevel = tObj->BaseLevel + (GLint) (tObj->MinLod + 0.5);
1376          firstLevel = MAX2(firstLevel, tObj->BaseLevel);
1377          lastLevel = tObj->BaseLevel + (GLint) (tObj->MaxLod + 0.5);
1378          lastLevel = MAX2(lastLevel, tObj->BaseLevel);
1379          lastLevel = MIN2(lastLevel, tObj->BaseLevel + baseImage->MaxLog2);
1380          lastLevel = MIN2(lastLevel, tObj->MaxLevel);
1381          lastLevel = MAX2(firstLevel, lastLevel);       /* need at least one level */
1382       }
1383       break;
1384    case GL_TEXTURE_RECTANGLE_NV:
1385    case GL_TEXTURE_4D_SGIS:
1386       firstLevel = lastLevel = 0;
1387       break;
1388    default:
1389       return;
1390    }
1391
1392    /* save these values */
1393    stObj->firstLevel = firstLevel;
1394    stObj->lastLevel = lastLevel;
1395 }
1396
1397
1398 static void
1399 copy_image_data_to_texture(struct st_context *st,
1400                            struct st_texture_object *stObj,
1401                            struct st_texture_image *stImage)
1402 {
1403    if (stImage->pt) {
1404       /* Copy potentially with the blitter:
1405        */
1406       st_texture_image_copy(st->pipe,
1407                             stObj->pt,  /* dest texture */
1408                             stImage->face, stImage->level,
1409                             stImage->pt /* src texture */
1410                             );
1411
1412       st->pipe->texture_release(st->pipe, &stImage->pt);
1413    }
1414    else {
1415       assert(stImage->base.Data != NULL);
1416
1417       /* More straightforward upload.
1418        */
1419       st_texture_image_data(st->pipe,
1420                                stObj->pt,
1421                                stImage->face,
1422                                stImage->level,
1423                                stImage->base.Data,
1424                                stImage->base.RowStride,
1425                                stImage->base.RowStride *
1426                                stImage->base.Height);
1427       _mesa_align_free(stImage->base.Data);
1428       stImage->base.Data = NULL;
1429    }
1430
1431    pipe_texture_reference(st->pipe, &stImage->pt, stObj->pt);
1432 }
1433
1434
1435 /*
1436  */
1437 GLboolean
1438 st_finalize_texture(GLcontext *ctx,
1439                     struct pipe_context *pipe, GLuint unit,
1440                     GLboolean *needFlush)
1441 {
1442    struct gl_texture_object *tObj = ctx->Texture.Unit[unit]._Current;
1443    struct st_texture_object *stObj = st_texture_object(tObj);
1444    int comp_byte = 0;
1445    int cpp;
1446
1447    GLuint face, i;
1448    GLuint nr_faces = 0;
1449    struct st_texture_image *firstImage;
1450
1451    *needFlush = GL_FALSE;
1452
1453    /* We know/require this is true by now:
1454     */
1455    assert(stObj->base._Complete);
1456
1457    /* What levels must the texture include at a minimum?
1458     */
1459    calculate_first_last_level(stObj);
1460    firstImage =
1461       st_texture_image(stObj->base.Image[0][stObj->firstLevel]);
1462
1463    /* Fallback case:
1464     */
1465    if (firstImage->base.Border) {
1466       if (stObj->pt) {
1467          ctx->st->pipe->texture_release(ctx->st->pipe, &stObj->pt);
1468       }
1469       return GL_FALSE;
1470    }
1471
1472
1473    /* If both firstImage and stObj point to a texture which can contain
1474     * all active images, favour firstImage.  Note that because of the
1475     * completeness requirement, we know that the image dimensions
1476     * will match.
1477     */
1478    if (firstImage->pt &&
1479        firstImage->pt != stObj->pt &&
1480        firstImage->pt->first_level <= stObj->firstLevel &&
1481        firstImage->pt->last_level >= stObj->lastLevel) {
1482
1483       if (stObj->pt)
1484          ctx->st->pipe->texture_release(ctx->st->pipe, &stObj->pt);
1485
1486       pipe_texture_reference(ctx->st->pipe, &stObj->pt, firstImage->pt);
1487    }
1488
1489    if (firstImage->base.IsCompressed) {
1490       comp_byte = compressed_num_bytes(firstImage->base.TexFormat->MesaFormat);
1491       cpp = comp_byte;
1492    }
1493    else {
1494       cpp = firstImage->base.TexFormat->TexelBytes;
1495    }
1496
1497    /* Check texture can hold all active levels.  Check texture matches
1498     * target, imageFormat, etc.
1499     *
1500     * XXX: For some layouts (eg i945?), the test might have to be
1501     * first_level == firstLevel, as the texture isn't valid except at the
1502     * original start level.  Hope to get around this by
1503     * programming minLod, maxLod, baseLevel into the hardware and
1504     * leaving the texture alone.
1505     */
1506    if (stObj->pt &&
1507        (stObj->pt->target != gl_target_to_pipe(stObj->base.Target) ||
1508         stObj->pt->internal_format != firstImage->base.InternalFormat ||
1509         stObj->pt->first_level != stObj->firstLevel ||
1510         stObj->pt->last_level != stObj->lastLevel ||
1511         stObj->pt->width[0] != firstImage->base.Width ||
1512         stObj->pt->height[0] != firstImage->base.Height ||
1513         stObj->pt->depth[0] != firstImage->base.Depth ||
1514         stObj->pt->cpp != cpp ||
1515         stObj->pt->compressed != firstImage->base.IsCompressed)) {
1516       ctx->st->pipe->texture_release(ctx->st->pipe, &stObj->pt);
1517    }
1518
1519
1520    /* May need to create a new texture:
1521     */
1522    if (!stObj->pt) {
1523       stObj->pt = st_texture_create(ctx->st,
1524                                     gl_target_to_pipe(stObj->base.Target),
1525                                     st_mesa_format_to_pipe_format(firstImage->base.TexFormat->MesaFormat),
1526                                     firstImage->base.InternalFormat,
1527                                     stObj->firstLevel,
1528                                     stObj->lastLevel,
1529                                     firstImage->base.Width,
1530                                     firstImage->base.Height,
1531                                     firstImage->base.Depth,
1532                                     comp_byte);
1533    }
1534
1535    /* Pull in any images not in the object's texture:
1536     */
1537    nr_faces = (stObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
1538    for (face = 0; face < nr_faces; face++) {
1539       for (i = stObj->firstLevel; i <= stObj->lastLevel; i++) {
1540          struct st_texture_image *stImage =
1541             st_texture_image(stObj->base.Image[face][i]);
1542
1543          /* Need to import images in main memory or held in other textures.
1544           */
1545          if (stObj->pt != stImage->pt) {
1546             copy_image_data_to_texture(ctx->st, stObj, stImage);
1547             *needFlush = GL_TRUE;
1548          }
1549       }
1550    }
1551
1552
1553    return GL_TRUE;
1554 }
1555
1556
1557
1558
1559 void
1560 st_init_texture_functions(struct dd_function_table *functions)
1561 {
1562    functions->ChooseTextureFormat = st_ChooseTextureFormat;
1563    functions->TexImage1D = st_TexImage1D;
1564    functions->TexImage2D = st_TexImage2D;
1565    functions->TexImage3D = st_TexImage3D;
1566    functions->TexSubImage1D = st_TexSubImage1D;
1567    functions->TexSubImage2D = st_TexSubImage2D;
1568    functions->TexSubImage3D = st_TexSubImage3D;
1569    functions->CopyTexImage1D = st_CopyTexImage1D;
1570    functions->CopyTexImage2D = st_CopyTexImage2D;
1571    functions->CopyTexSubImage1D = st_CopyTexSubImage1D;
1572    functions->CopyTexSubImage2D = st_CopyTexSubImage2D;
1573    functions->CopyTexSubImage3D = st_CopyTexSubImage3D;
1574
1575    functions->GetTexImage = st_GetTexImage;
1576
1577    /* compressed texture functions */
1578    functions->CompressedTexImage2D = st_CompressedTexImage2D;
1579    functions->GetCompressedTexImage = st_GetCompressedTexImage;
1580
1581    functions->NewTextureObject = st_NewTextureObject;
1582    functions->NewTextureImage = st_NewTextureImage;
1583    functions->DeleteTexture = st_DeleteTextureObject;
1584    functions->FreeTexImageData = st_FreeTextureImageData;
1585    functions->UpdateTexturePalette = 0;
1586    functions->IsTextureResident = st_IsTextureResident;
1587
1588    functions->TextureMemCpy = do_memcpy;
1589
1590    /* XXX Temporary until we can query pipe's texture sizes */
1591    functions->TestProxyTexImage = _mesa_test_proxy_teximage;
1592 }