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/mipmap.h"
  34 #include "main/pixel.h"
  35 #include "main/texcompress.h"
  36 #include "main/texformat.h"
  37 #include "main/teximage.h"
  38 #include "main/texobj.h"
  39 #include "main/texstore.h"
  40
  41 #include "state_tracker/st_context.h"
  42 #include "state_tracker/st_cb_fbo.h"
  43 #include "state_tracker/st_cb_texture.h"
  44 #include "state_tracker/st_format.h"
  45 #include "state_tracker/st_public.h"
  46 #include "state_tracker/st_texture.h"
  47 #include "state_tracker/st_gen_mipmap.h"
  48
  49 #include "pipe/p_context.h"
  50 #include "pipe/p_defines.h"
  51 #include "pipe/p_inlines.h"
  52 #include "util/p_tile.h"
  53 #include "util/u_blit.h"
  54
  55
  56 #define DBG if (0) printf
  57
  58
  59 static INLINE struct st_texture_image *
  60 st_texture_image(struct gl_texture_image *img)
  61 {
  62    return (struct st_texture_image *) img;
  63 }
  64
  65
  66 static enum pipe_texture_target
  67 gl_target_to_pipe(GLenum target)
  68 {
  69    switch (target) {
  70    case GL_TEXTURE_1D:
  71       return PIPE_TEXTURE_1D;
  72
  73    case GL_TEXTURE_2D:
  74    case GL_TEXTURE_RECTANGLE_NV:
  75       return PIPE_TEXTURE_2D;
  76
  77    case GL_TEXTURE_3D:
  78       return PIPE_TEXTURE_3D;
  79
  80    case GL_TEXTURE_CUBE_MAP_ARB:
  81       return PIPE_TEXTURE_CUBE;
  82
  83    default:
  84       assert(0);
  85       return 0;
  86    }
  87 }
  88
  89
  90 /**
  91  * Return nominal bytes per texel for a compressed format, 0 for non-compressed
  92  * format.
  93  */
  94 static int
  95 compressed_num_bytes(GLuint mesaFormat)
  96 {
  97    switch(mesaFormat) {
  98    case MESA_FORMAT_RGB_FXT1:
  99    case MESA_FORMAT_RGBA_FXT1:
 100    case MESA_FORMAT_RGB_DXT1:
 101    case MESA_FORMAT_RGBA_DXT1:
 102       return 2;
 103    case MESA_FORMAT_RGBA_DXT3:
 104    case MESA_FORMAT_RGBA_DXT5:
 105       return 4;
 106    default:
 107       return 0;
 108    }
 109 }
 110
 111
 112 static GLboolean
 113 st_IsTextureResident(GLcontext * ctx, struct gl_texture_object *texObj)
 114 {
 115 #if 0
 116    struct intel_context *intel = intel_context(ctx);
 117    struct st_texture_object *stObj = st_texture_object(texObj);
 118
 119    return
 120       stObj->pt &&
 121       stObj->pt->region &&
 122       intel_is_region_resident(intel, stObj->pt->region);
 123 #endif
 124    return 1;
 125 }
 126
 127
 128 static struct gl_texture_image *
 129 st_NewTextureImage(GLcontext * ctx)
 130 {
 131    DBG("%s\n", __FUNCTION__);
 132    (void) ctx;
 133    return (struct gl_texture_image *) CALLOC_STRUCT(st_texture_image);
 134 }
 135
 136
 137 static struct gl_texture_object *
 138 st_NewTextureObject(GLcontext * ctx, GLuint name, GLenum target)
 139 {
 140    struct st_texture_object *obj = CALLOC_STRUCT(st_texture_object);
 141
 142    DBG("%s\n", __FUNCTION__);
 143    _mesa_initialize_texture_object(&obj->base, name, target);
 144
 145    return &obj->base;
 146 }
 147
 148 static void
 149 st_DeleteTextureObject(GLcontext *ctx,
 150                        struct gl_texture_object *texObj)
 151 {
 152    struct st_texture_object *stObj = st_texture_object(texObj);
 153    if (stObj->pt)
 154       pipe_texture_release(&stObj->pt);
 155
 156    _mesa_delete_texture_object(ctx, texObj);
 157 }
 158
 159
 160 static void
 161 st_FreeTextureImageData(GLcontext * ctx, struct gl_texture_image *texImage)
 162 {
 163    struct st_texture_image *stImage = st_texture_image(texImage);
 164
 165    DBG("%s\n", __FUNCTION__);
 166
 167    if (stImage->pt) {
 168       pipe_texture_release(&stImage->pt);
 169    }
 170
 171    if (texImage->Data) {
 172       free(texImage->Data);
 173       texImage->Data = NULL;
 174    }
 175 }
 176
 177
 178 /* ================================================================
 179  * From linux kernel i386 header files, copes with odd sizes better
 180  * than COPY_DWORDS would:
 181  * XXX Put this in src/mesa/main/imports.h ???
 182  */
 183 #if defined(i386) || defined(__i386__)
 184 static INLINE void *
 185 __memcpy(void *to, const void *from, size_t n)
 186 {
 187    int d0, d1, d2;
 188    __asm__ __volatile__("rep ; movsl\n\t"
 189                         "testb $2,%b4\n\t"
 190                         "je 1f\n\t"
 191                         "movsw\n"
 192                         "1:\ttestb $1,%b4\n\t"
 193                         "je 2f\n\t"
 194                         "movsb\n" "2:":"=&c"(d0), "=&D"(d1), "=&S"(d2)
 195                         :"0"(n / 4), "q"(n), "1"((long) to), "2"((long) from)
 196                         :"memory");
 197    return (to);
 198 }
 199 #else
 200 #define __memcpy(a,b,c) memcpy(a,b,c)
 201 #endif
 202
 203
 204 /* The system memcpy (at least on ubuntu 5.10) has problems copying
 205  * to agp (writecombined) memory from a source which isn't 64-byte
 206  * aligned - there is a 4x performance falloff.
 207  *
 208  * The x86 __memcpy is immune to this but is slightly slower
 209  * (10%-ish) than the system memcpy.
 210  *
 211  * The sse_memcpy seems to have a slight cliff at 64/32 bytes, but
 212  * isn't much faster than x86_memcpy for agp copies.
 213  *
 214  * TODO: switch dynamically.
 215  */
 216 static void *
 217 do_memcpy(void *dest, const void *src, size_t n)
 218 {
 219    if ((((unsigned) src) & 63) || (((unsigned) dest) & 63)) {
 220       return __memcpy(dest, src, n);
 221    }
 222    else
 223       return memcpy(dest, src, n);
 224 }
 225
 226
 227 /* Functions to store texture images.  Where possible, textures
 228  * will be created or further instantiated with image data, otherwise
 229  * images will be stored in malloc'd memory.  A validation step is
 230  * required to pull those images into a texture, or otherwise
 231  * decide a fallback is required.
 232  */
 233
 234
 235 static int
 236 logbase2(int n)
 237 {
 238    GLint i = 1;
 239    GLint log2 = 0;
 240
 241    while (n > i) {
 242       i *= 2;
 243       log2++;
 244    }
 245
 246    return log2;
 247 }
 248
 249
 250 /**
 251  * Allocate a pipe_texture object for the given st_texture_object using
 252  * the given st_texture_image to guess the mipmap size/levels.
 253  *
 254  * [comments...]
 255  * Otherwise, store it in memory if (Border != 0) or (any dimension ==
 256  * 1).
 257  *
 258  * Otherwise, if max_level >= level >= min_level, create texture with
 259  * space for images from min_level down to max_level.
 260  *
 261  * Otherwise, create texture with space for images from (level 0)..(1x1).
 262  * Consider pruning this texture at a validation if the saving is worth it.
 263  */
 264 static void
 265 guess_and_alloc_texture(struct st_context *st,
 266                         struct st_texture_object *stObj,
 267                         const struct st_texture_image *stImage)
 268 {
 269    GLuint firstLevel;
 270    GLuint lastLevel;
 271    GLuint width = stImage->base.Width2;  /* size w/out border */
 272    GLuint height = stImage->base.Height2;
 273    GLuint depth = stImage->base.Depth2;
 274    GLuint i, comp_byte = 0;
 275
 276    DBG("%s\n", __FUNCTION__);
 277
 278    assert(!stObj->pt);
 279
 280    if (stObj->pt &&
 281        stImage->level > stObj->base.BaseLevel &&
 282        (stImage->base.Width == 1 ||
 283         (stObj->base.Target != GL_TEXTURE_1D &&
 284          stImage->base.Height == 1) ||
 285         (stObj->base.Target == GL_TEXTURE_3D &&
 286          stImage->base.Depth == 1)))
 287       return;
 288
 289    /* If this image disrespects BaseLevel, allocate from level zero.
 290     * Usually BaseLevel == 0, so it's unlikely to happen.
 291     */
 292    if (stImage->level < stObj->base.BaseLevel)
 293       firstLevel = 0;
 294    else
 295       firstLevel = stObj->base.BaseLevel;
 296
 297
 298    /* Figure out image dimensions at start level.
 299     */
 300    for (i = stImage->level; i > firstLevel; i--) {
 301       if (width != 1)
 302          width <<= 1;
 303       if (height != 1)
 304          height <<= 1;
 305       if (depth != 1)
 306          depth <<= 1;
 307    }
 308
 309    /* Guess a reasonable value for lastLevel.  This is probably going
 310     * to be wrong fairly often and might mean that we have to look at
 311     * resizable buffers, or require that buffers implement lazy
 312     * pagetable arrangements.
 313     */
 314    if ((stObj->base.MinFilter == GL_NEAREST ||
 315         stObj->base.MinFilter == GL_LINEAR) &&
 316        stImage->level == firstLevel) {
 317       lastLevel = firstLevel;
 318    }
 319    else {
 320       GLuint l2width = logbase2(width);
 321       GLuint l2height = logbase2(height);
 322       GLuint l2depth = logbase2(depth);
 323       lastLevel = firstLevel + MAX2(MAX2(l2width, l2height), l2depth);
 324    }
 325
 326    if (stImage->base.IsCompressed)
 327       comp_byte = compressed_num_bytes(stImage->base.TexFormat->MesaFormat);
 328
 329    stObj->pt = st_texture_create(st,
 330                                  gl_target_to_pipe(stObj->base.Target),
 331                                  st_mesa_format_to_pipe_format(stImage->base.TexFormat->MesaFormat),
 332                                  lastLevel,
 333                                  width,
 334                                  height,
 335                                  depth,
 336                                  comp_byte);
 337
 338    DBG("%s - success\n", __FUNCTION__);
 339 }
 340
 341
 342 /* There are actually quite a few combinations this will work for,
 343  * more than what I've listed here.
 344  */
 345 static GLboolean
 346 check_pbo_format(GLint internalFormat,
 347                  GLenum format, GLenum type,
 348                  const struct gl_texture_format *mesa_format)
 349 {
 350    switch (internalFormat) {
 351    case 4:
 352    case GL_RGBA:
 353       return (format == GL_BGRA &&
 354               (type == GL_UNSIGNED_BYTE ||
 355                type == GL_UNSIGNED_INT_8_8_8_8_REV) &&
 356               mesa_format == &_mesa_texformat_argb8888);
 357    case 3:
 358    case GL_RGB:
 359       return (format == GL_RGB &&
 360               type == GL_UNSIGNED_SHORT_5_6_5 &&
 361               mesa_format == &_mesa_texformat_rgb565);
 362    case GL_YCBCR_MESA:
 363       return (type == GL_UNSIGNED_SHORT_8_8_MESA || type == GL_UNSIGNED_BYTE);
 364    default:
 365       return GL_FALSE;
 366    }
 367 }
 368
 369
 370 /* XXX: Do this for TexSubImage also:
 371  */
 372 static GLboolean
 373 try_pbo_upload(GLcontext *ctx,
 374                struct st_texture_image *stImage,
 375                const struct gl_pixelstore_attrib *unpack,
 376                GLint internalFormat,
 377                GLint width, GLint height,
 378                GLenum format, GLenum type, const void *pixels)
 379 {
 380    return GL_FALSE;  /* XXX fix flushing/locking/blitting below */
 381 #if 000
 382    struct intel_context *intel = intel_context(ctx);
 383    struct intel_buffer_object *pbo = intel_buffer_object(unpack->BufferObj);
 384    GLuint src_offset, src_stride;
 385    GLuint dst_offset, dst_stride;
 386
 387    if (!pbo ||
 388        ctx._ImageTransferState ||
 389        unpack->SkipPixels || unpack->SkipRows) {
 390       _mesa_printf("%s: failure 1\n", __FUNCTION__);
 391       return GL_FALSE;
 392    }
 393
 394    src_offset = (GLuint) pixels;
 395
 396    if (unpack->RowLength > 0)
 397       src_stride = unpack->RowLength;
 398    else
 399       src_stride = width;
 400
 401    dst_offset = st_texture_image_offset(stImage->pt,
 402                                            stImage->face,
 403                                            stImage->level);
 404
 405    dst_stride = stImage->pt->pitch;
 406
 407    {
 408       struct _DriBufferObject *src_buffer =
 409          intel_bufferobj_buffer(intel, pbo, INTEL_READ);
 410
 411       /* Temporary hack: cast to _DriBufferObject:
 412        */
 413       struct _DriBufferObject *dst_buffer =
 414          (struct _DriBufferObject *)stImage->pt->region->buffer;
 415
 416
 417       intelEmitCopyBlit(intel,
 418                         stImage->pt->cpp,
 419                         src_stride, src_buffer, src_offset,
 420                         dst_stride, dst_buffer, dst_offset,
 421                         0, 0, 0, 0, width, height,
 422                         GL_COPY);
 423    }
 424
 425    return GL_TRUE;
 426 #endif
 427 }
 428
 429
 430 /**
 431  * Adjust pixel unpack params and image dimensions to strip off the
 432  * texture border.
 433  * Gallium doesn't support texture borders.  They've seldem been used
 434  * and seldom been implemented correctly anyway.
 435  * \param unpackNew  returns the new pixel unpack parameters
 436  */
 437 static void
 438 strip_texture_border(GLint border,
 439                      GLint *width, GLint *height, GLint *depth,
 440                      const struct gl_pixelstore_attrib *unpack,
 441                      struct gl_pixelstore_attrib *unpackNew)
 442 {
 443    assert(border > 0);  /* sanity check */
 444
 445    *unpackNew = *unpack;
 446
 447    if (unpackNew->RowLength == 0)
 448       unpackNew->RowLength = *width;
 449
 450    if (depth && unpackNew->ImageHeight == 0)
 451       unpackNew->ImageHeight = *height;
 452
 453    unpackNew->SkipPixels += border;
 454    if (height)
 455       unpackNew->SkipRows += border;
 456    if (depth)
 457       unpackNew->SkipImages += border;
 458
 459    assert(*width >= 3);
 460    *width = *width - 2 * border;
 461    if (height && *height >= 3)
 462       *height = *height - 2 * border;
 463    if (depth && *depth >= 3)
 464       *depth = *depth - 2 * border;
 465 }
 466
 467
 468 static void
 469 st_TexImage(GLcontext * ctx,
 470             GLint dims,
 471             GLenum target, GLint level,
 472             GLint internalFormat,
 473             GLint width, GLint height, GLint depth,
 474             GLint border,
 475             GLenum format, GLenum type, const void *pixels,
 476             const struct gl_pixelstore_attrib *unpack,
 477             struct gl_texture_object *texObj,
 478             struct gl_texture_image *texImage,
 479             GLsizei imageSize, int compressed)
 480 {
 481    struct pipe_context *pipe = ctx->st->pipe;
 482    struct st_texture_object *stObj = st_texture_object(texObj);
 483    struct st_texture_image *stImage = st_texture_image(texImage);
 484    GLint postConvWidth, postConvHeight;
 485    GLint texelBytes, sizeInBytes;
 486    GLuint dstRowStride;
 487    struct gl_pixelstore_attrib unpackNB;
 488
 489    DBG("%s target %s level %d %dx%dx%d border %d\n", __FUNCTION__,
 490        _mesa_lookup_enum_by_nr(target), level, width, height, depth, border);
 491
 492    /* gallium does not support texture borders, strip it off */
 493    if (border) {
 494       strip_texture_border(border, &width, &height, &depth,
 495                            unpack, &unpackNB);
 496       unpack = &unpackNB;
 497       texImage->Width = width;
 498       texImage->Height = height;
 499       texImage->Depth = depth;
 500       texImage->Border = 0;
 501       border = 0;
 502    }
 503
 504    postConvWidth = width;
 505    postConvHeight = height;
 506
 507    stImage->face = _mesa_tex_target_to_face(target);
 508    stImage->level = level;
 509
 510    if (ctx->_ImageTransferState & IMAGE_CONVOLUTION_BIT) {
 511       _mesa_adjust_image_for_convolution(ctx, dims, &postConvWidth,
 512                                          &postConvHeight);
 513    }
 514
 515    /* choose the texture format */
 516    texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat,
 517                                                 format, type);
 518
 519    _mesa_set_fetch_functions(texImage, dims);
 520
 521    if (texImage->TexFormat->TexelBytes == 0) {
 522       /* must be a compressed format */
 523       texelBytes = 0;
 524       texImage->IsCompressed = GL_TRUE;
 525       texImage->CompressedSize =
 526          ctx->Driver.CompressedTextureSize(ctx, texImage->Width,
 527                                            texImage->Height, texImage->Depth,
 528                                            texImage->TexFormat->MesaFormat);
 529    }
 530    else {
 531       texelBytes = texImage->TexFormat->TexelBytes;
 532
 533       /* Minimum pitch of 32 bytes */
 534       if (postConvWidth * texelBytes < 32) {
 535          postConvWidth = 32 / texelBytes;
 536          texImage->RowStride = postConvWidth;
 537       }
 538
 539       /* we'll set RowStride elsewhere when the texture is a "mapped" state */
 540       /*assert(texImage->RowStride == postConvWidth);*/
 541    }
 542
 543    /* Release the reference to a potentially orphaned buffer.
 544     * Release any old malloced memory.
 545     */
 546    if (stImage->pt) {
 547       pipe_texture_release(&stImage->pt);
 548       assert(!texImage->Data);
 549    }
 550    else if (texImage->Data) {
 551       _mesa_align_free(texImage->Data);
 552    }
 553
 554    /* If this is the only mipmap level in the texture, could call
 555     * bmBufferData with NULL data to free the old block and avoid
 556     * waiting on any outstanding fences.
 557     */
 558    if (stObj->pt &&
 559        (stObj->teximage_realloc ||
 560         (/*stObj->pt->first_level == level &&*/
 561          stObj->pt->last_level == level &&
 562          stObj->pt->target != PIPE_TEXTURE_CUBE &&
 563          !st_texture_match_image(stObj->pt, &stImage->base,
 564                                  stImage->face, stImage->level)))) {
 565
 566       DBG("release it\n");
 567       pipe_texture_release(&stObj->pt);
 568       assert(!stObj->pt);
 569       stObj->teximage_realloc = FALSE;
 570    }
 571
 572    if (!stObj->pt) {
 573       guess_and_alloc_texture(ctx->st, stObj, stImage);
 574       if (!stObj->pt) {
 575          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 576          return;
 577       }
 578    }
 579
 580    assert(!stImage->pt);
 581
 582    if (stObj->pt &&
 583        st_texture_match_image(stObj->pt, &stImage->base,
 584                                  stImage->face, stImage->level)) {
 585
 586       pipe_texture_reference(&stImage->pt, stObj->pt);
 587       assert(stImage->pt);
 588    }
 589
 590    if (!stImage->pt)
 591       DBG("XXX: Image did not fit into texture - storing in local memory!\n");
 592
 593 #if 0 /* XXX FIX when st_buffer_objects are in place */
 594    /* PBO fastpaths:
 595     */
 596    if (dims <= 2 &&
 597        stImage->pt &&
 598        intel_buffer_object(unpack->BufferObj) &&
 599        check_pbo_format(internalFormat, format,
 600                         type, texImage->TexFormat)) {
 601
 602       DBG("trying pbo upload\n");
 603
 604
 605
 606       /* Otherwise, attempt to use the blitter for PBO image uploads.
 607        */
 608       if (try_pbo_upload(intel, stImage, unpack,
 609                          internalFormat,
 610                          width, height, format, type, pixels)) {
 611          DBG("pbo upload succeeded\n");
 612          return;
 613       }
 614
 615       DBG("pbo upload failed\n");
 616    }
 617 #else
 618    (void) try_pbo_upload;
 619    (void) check_pbo_format;
 620 #endif
 621
 622
 623    /* st_CopyTexImage calls this function with pixels == NULL, with
 624     * the expectation that the texture will be set up but nothing
 625     * more will be done.  This is where those calls return:
 626     */
 627    if (compressed) {
 628       pixels = _mesa_validate_pbo_compressed_teximage(ctx, imageSize, pixels,
 629                                                       unpack,
 630                                                       "glCompressedTexImage");
 631    } else {
 632       pixels = _mesa_validate_pbo_teximage(ctx, dims, width, height, 1,
 633                                            format, type,
 634                                            pixels, unpack, "glTexImage");
 635    }
 636    if (!pixels)
 637       return;
 638
 639    if (stImage->pt) {
 640       texImage->Data = st_texture_image_map(ctx->st, stImage, 0);
 641       dstRowStride = stImage->surface->pitch * stImage->surface->cpp;
 642    }
 643    else {
 644       /* Allocate regular memory and store the image there temporarily.   */
 645       if (texImage->IsCompressed) {
 646          sizeInBytes = texImage->CompressedSize;
 647          dstRowStride =
 648             _mesa_compressed_row_stride(texImage->TexFormat->MesaFormat, width);
 649          assert(dims != 3);
 650       }
 651       else {
 652          dstRowStride = postConvWidth * texelBytes;
 653          sizeInBytes = depth * dstRowStride * postConvHeight;
 654       }
 655
 656       texImage->Data = malloc(sizeInBytes);
 657    }
 658
 659    DBG("Upload image %dx%dx%d row_len %x pitch %x\n",
 660        width, height, depth, width * texelBytes, dstRowStride);
 661
 662    /* Copy data.  Would like to know when it's ok for us to eg. use
 663     * the blitter to copy.  Or, use the hardware to do the format
 664     * conversion and copy:
 665     */
 666    if (compressed) {
 667       memcpy(texImage->Data, pixels, imageSize);
 668    }
 669    else {
 670       GLuint srcImageStride = _mesa_image_image_stride(unpack, width, height,
 671                                                        format, type);
 672       int i;
 673       const GLubyte *src = (const GLubyte *) pixels;
 674
 675       for (i = 0; i++ < depth;) {
 676          if (!texImage->TexFormat->StoreImage(ctx, dims,
 677                                               texImage->_BaseFormat,
 678                                               texImage->TexFormat,
 679                                               texImage->Data,
 680                                               0, 0, 0, /* dstX/Y/Zoffset */
 681                                               dstRowStride,
 682                                               texImage->ImageOffsets,
 683                                               width, height, 1,
 684                                               format, type, src, unpack)) {
 685             _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
 686          }
 687
 688          if (stImage->pt && i < depth) {
 689             st_texture_image_unmap(stImage);
 690             texImage->Data = st_texture_image_map(ctx->st, stImage, i);
 691             src += srcImageStride;
 692          }
 693       }
 694    }
 695
 696    _mesa_unmap_teximage_pbo(ctx, unpack);
 697
 698    if (stImage->pt) {
 699       st_texture_image_unmap(stImage);
 700       texImage->Data = NULL;
 701    }
 702
 703    if (stObj->pt)
 704       pipe->texture_update(pipe, stObj->pt, stImage->face, (1 << level));
 705
 706    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 707       ctx->Driver.GenerateMipmap(ctx, target, texObj);
 708    }
 709 }
 710
 711
 712 static void
 713 st_TexImage3D(GLcontext * ctx,
 714                 GLenum target, GLint level,
 715                 GLint internalFormat,
 716                 GLint width, GLint height, GLint depth,
 717                 GLint border,
 718                 GLenum format, GLenum type, const void *pixels,
 719                 const struct gl_pixelstore_attrib *unpack,
 720                 struct gl_texture_object *texObj,
 721                 struct gl_texture_image *texImage)
 722 {
 723    st_TexImage(ctx, 3, target, level,
 724                  internalFormat, width, height, depth, border,
 725                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 726 }
 727
 728
 729 static void
 730 st_TexImage2D(GLcontext * ctx,
 731                 GLenum target, GLint level,
 732                 GLint internalFormat,
 733                 GLint width, GLint height, GLint border,
 734                 GLenum format, GLenum type, const void *pixels,
 735                 const struct gl_pixelstore_attrib *unpack,
 736                 struct gl_texture_object *texObj,
 737                 struct gl_texture_image *texImage)
 738 {
 739    st_TexImage(ctx, 2, target, level,
 740                  internalFormat, width, height, 1, border,
 741                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 742 }
 743
 744
 745 static void
 746 st_TexImage1D(GLcontext * ctx,
 747                 GLenum target, GLint level,
 748                 GLint internalFormat,
 749                 GLint width, GLint border,
 750                 GLenum format, GLenum type, const void *pixels,
 751                 const struct gl_pixelstore_attrib *unpack,
 752                 struct gl_texture_object *texObj,
 753                 struct gl_texture_image *texImage)
 754 {
 755    st_TexImage(ctx, 1, target, level,
 756                  internalFormat, width, 1, 1, border,
 757                  format, type, pixels, unpack, texObj, texImage, 0, 0);
 758 }
 759
 760
 761 static void
 762 st_CompressedTexImage2D( GLcontext *ctx, GLenum target, GLint level,
 763                                 GLint internalFormat,
 764                                 GLint width, GLint height, GLint border,
 765                                 GLsizei imageSize, const GLvoid *data,
 766                                 struct gl_texture_object *texObj,
 767                                 struct gl_texture_image *texImage )
 768 {
 769    st_TexImage(ctx, 2, target, level,
 770                  internalFormat, width, height, 1, border,
 771                  0, 0, data, &ctx->Unpack, texObj, texImage, imageSize, 1);
 772 }
 773
 774
 775 /**
 776  * Need to map texture image into memory before copying image data,
 777  * then unmap it.
 778  */
 779 static void
 780 st_get_tex_image(GLcontext * ctx, GLenum target, GLint level,
 781                  GLenum format, GLenum type, GLvoid * pixels,
 782                  struct gl_texture_object *texObj,
 783                  struct gl_texture_image *texImage, int compressed)
 784 {
 785    struct st_texture_image *stImage = st_texture_image(texImage);
 786    GLuint dstImageStride = _mesa_image_image_stride(&ctx->Pack, texImage->Width,
 787                                                     texImage->Height, format,
 788                                                     type);
 789    GLuint depth;
 790    int i;
 791    GLubyte *dest;
 792
 793    /* Map */
 794    if (stImage->pt) {
 795       /* Image is stored in hardware format in a buffer managed by the
 796        * kernel.  Need to explicitly map and unmap it.
 797        */
 798       texImage->Data = st_texture_image_map(ctx->st, stImage, 0);
 799       texImage->RowStride = stImage->surface->pitch;
 800    }
 801    else {
 802       /* Otherwise, the image should actually be stored in
 803        * texImage->Data.  This is pretty confusing for
 804        * everybody, I'd much prefer to separate the two functions of
 805        * texImage->Data - storage for texture images in main memory
 806        * and access (ie mappings) of images.  In other words, we'd
 807        * create a new texImage->Map field and leave Data simply for
 808        * storage.
 809        */
 810       assert(texImage->Data);
 811    }
 812
 813    depth = texImage->Depth;
 814    texImage->Depth = 1;
 815
 816    dest = (GLubyte *) pixels;
 817
 818    for (i = 0; i++ < depth;) {
 819       if (compressed) {
 820          _mesa_get_compressed_teximage(ctx, target, level, dest,
 821                                        texObj, texImage);
 822       } else {
 823          _mesa_get_teximage(ctx, target, level, format, type, dest,
 824                             texObj, texImage);
 825       }
 826
 827       if (stImage->pt && i < depth) {
 828          st_texture_image_unmap(stImage);
 829          texImage->Data = st_texture_image_map(ctx->st, stImage, i);
 830          dest += dstImageStride;
 831       }
 832    }
 833
 834    texImage->Depth = depth;
 835
 836    /* Unmap */
 837    if (stImage->pt) {
 838       st_texture_image_unmap(stImage);
 839       texImage->Data = NULL;
 840    }
 841 }
 842
 843
 844 static void
 845 st_GetTexImage(GLcontext * ctx, GLenum target, GLint level,
 846                  GLenum format, GLenum type, GLvoid * pixels,
 847                  struct gl_texture_object *texObj,
 848                  struct gl_texture_image *texImage)
 849 {
 850    st_get_tex_image(ctx, target, level, format, type, pixels,
 851                     texObj, texImage, 0);
 852 }
 853
 854
 855 static void
 856 st_GetCompressedTexImage(GLcontext *ctx, GLenum target, GLint level,
 857                            GLvoid *pixels,
 858                            const struct gl_texture_object *texObj,
 859                            const struct gl_texture_image *texImage)
 860 {
 861    st_get_tex_image(ctx, target, level, 0, 0, pixels,
 862                     (struct gl_texture_object *) texObj,
 863                     (struct gl_texture_image *) texImage, 1);
 864 }
 865
 866
 867
 868 static void
 869 st_TexSubimage(GLcontext * ctx,
 870                  GLint dims,
 871                  GLenum target, GLint level,
 872                  GLint xoffset, GLint yoffset, GLint zoffset,
 873                  GLint width, GLint height, GLint depth,
 874                  GLenum format, GLenum type, const void *pixels,
 875                  const struct gl_pixelstore_attrib *packing,
 876                  struct gl_texture_object *texObj,
 877                  struct gl_texture_image *texImage)
 878 {
 879    struct pipe_context *pipe = ctx->st->pipe;
 880    struct st_texture_object *stObj = st_texture_object(texObj);
 881    struct st_texture_image *stImage = st_texture_image(texImage);
 882    GLuint dstRowStride;
 883    GLuint srcImageStride = _mesa_image_image_stride(packing, width, height,
 884                                                     format, type);
 885    int i;
 886    const GLubyte *src;
 887
 888    DBG("%s target %s level %d offset %d,%d %dx%d\n", __FUNCTION__,
 889        _mesa_lookup_enum_by_nr(target),
 890        level, xoffset, yoffset, width, height);
 891
 892    pixels =
 893       _mesa_validate_pbo_teximage(ctx, dims, width, height, depth, format,
 894                                   type, pixels, packing, "glTexSubImage2D");
 895    if (!pixels)
 896       return;
 897
 898    /* Map buffer if necessary.  Need to lock to prevent other contexts
 899     * from uploading the buffer under us.
 900     */
 901    if (stImage->pt) {
 902       texImage->Data = st_texture_image_map(ctx->st, stImage, zoffset);
 903       dstRowStride = stImage->surface->pitch * stImage->surface->cpp;
 904    }
 905
 906    if (!texImage->Data) {
 907       _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage");
 908       return;
 909    }
 910
 911    src = (const GLubyte *) pixels;
 912
 913    for (i = 0; i++ < depth;) {
 914       if (!texImage->TexFormat->StoreImage(ctx, dims, texImage->_BaseFormat,
 915                                            texImage->TexFormat,
 916                                            texImage->Data,
 917                                            xoffset, yoffset, 0,
 918                                            dstRowStride,
 919                                            texImage->ImageOffsets,
 920                                            width, height, 1,
 921                                            format, type, src, packing)) {
 922          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexSubImage");
 923       }
 924
 925       if (stImage->pt && i < depth) {
 926          /* map next slice of 3D texture */
 927          st_texture_image_unmap(stImage);
 928          texImage->Data = st_texture_image_map(ctx->st, stImage, zoffset + i);
 929          src += srcImageStride;
 930       }
 931    }
 932
 933    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
 934       ctx->Driver.GenerateMipmap(ctx, target, texObj);
 935    }
 936
 937    _mesa_unmap_teximage_pbo(ctx, packing);
 938
 939    if (stImage->pt) {
 940       st_texture_image_unmap(stImage);
 941       texImage->Data = NULL;
 942    }
 943
 944    pipe->texture_update(pipe, stObj->pt, stImage->face, (1 << level));
 945 }
 946
 947
 948
 949 static void
 950 st_TexSubImage3D(GLcontext * ctx,
 951                    GLenum target,
 952                    GLint level,
 953                    GLint xoffset, GLint yoffset, GLint zoffset,
 954                    GLsizei width, GLsizei height, GLsizei depth,
 955                    GLenum format, GLenum type,
 956                    const GLvoid * pixels,
 957                    const struct gl_pixelstore_attrib *packing,
 958                    struct gl_texture_object *texObj,
 959                    struct gl_texture_image *texImage)
 960 {
 961    st_TexSubimage(ctx, 3, target, level,
 962                   xoffset, yoffset, zoffset,
 963                   width, height, depth,
 964                   format, type, pixels, packing, texObj, texImage);
 965 }
 966
 967
 968
 969 static void
 970 st_TexSubImage2D(GLcontext * ctx,
 971                    GLenum target,
 972                    GLint level,
 973                    GLint xoffset, GLint yoffset,
 974                    GLsizei width, GLsizei height,
 975                    GLenum format, GLenum type,
 976                    const GLvoid * pixels,
 977                    const struct gl_pixelstore_attrib *packing,
 978                    struct gl_texture_object *texObj,
 979                    struct gl_texture_image *texImage)
 980 {
 981    st_TexSubimage(ctx, 2, target, level,
 982                   xoffset, yoffset, 0,
 983                   width, height, 1,
 984                   format, type, pixels, packing, texObj, texImage);
 985 }
 986
 987
 988 static void
 989 st_TexSubImage1D(GLcontext * ctx,
 990                    GLenum target,
 991                    GLint level,
 992                    GLint xoffset,
 993                    GLsizei width,
 994                    GLenum format, GLenum type,
 995                    const GLvoid * pixels,
 996                    const struct gl_pixelstore_attrib *packing,
 997                    struct gl_texture_object *texObj,
 998                    struct gl_texture_image *texImage)
 999 {
1000    st_TexSubimage(ctx, 1, target, level,
1001                   xoffset, 0, 0,
1002                   width, 1, 1,
1003                   format, type, pixels, packing, texObj, texImage);
1004 }
1005
1006
1007
1008 /**
1009  * Return 0 for GL_TEXTURE_CUBE_MAP_POSITIVE_X,
1010  *        1 for GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
1011  *        etc.
1012  * XXX duplicated from main/teximage.c
1013  */
1014 static uint
1015 texture_face(GLenum target)
1016 {
1017    if (target >= GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB &&
1018        target <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB)
1019       return (GLuint) target - (GLuint) GL_TEXTURE_CUBE_MAP_POSITIVE_X;
1020    else
1021       return 0;
1022 }
1023
1024
1025
1026 /**
1027  * Do a CopyTexSubImage operation by mapping the source surface and
1028  * dest surface and using get_tile()/put_tile() to access the pixels/texels.
1029  *
1030  * Note: srcY=0=TOP of renderbuffer
1031  */
1032 static void
1033 fallback_copy_texsubimage(GLcontext *ctx,
1034                           GLenum target,
1035                           GLint level,
1036                           struct st_renderbuffer *strb,
1037                           struct st_texture_image *stImage,
1038                           GLenum baseFormat,
1039                           GLint destX, GLint destY, GLint destZ,
1040                           GLint srcX, GLint srcY,
1041                           GLsizei width, GLsizei height)
1042 {
1043    struct pipe_context *pipe = ctx->st->pipe;
1044    struct pipe_screen *screen = pipe->screen;
1045    const uint face = texture_face(target);
1046    struct pipe_texture *pt = stImage->pt;
1047    struct pipe_surface *src_surf, *dest_surf;
1048    GLint row, yStep;
1049
1050    st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
1051
1052    /* determine bottom-to-top vs. top-to-bottom order */
1053    if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1054       destY = height - 1 - destY;
1055       yStep = -1;
1056    }
1057    else {
1058       yStep = 1;
1059    }
1060
1061    src_surf = strb->surface;
1062
1063    dest_surf = screen->get_tex_surface(screen, pt, face, level, destZ);
1064
1065    assert(width <= MAX_WIDTH);
1066
1067    /*
1068     * To avoid a large temp memory allocation, do copy row by row.
1069     */
1070    if (baseFormat == GL_DEPTH_COMPONENT) {
1071       const GLboolean scaleOrBias = (ctx->Pixel.DepthScale != 1.0F ||
1072                                      ctx->Pixel.DepthBias != 0.0F);
1073
1074       for (row = 0; row < height; row++, srcY++, destY += yStep) {
1075          uint data[MAX_WIDTH];
1076          pipe_get_tile_z(pipe, src_surf, srcX, srcY, width, 1, data);
1077          if (scaleOrBias) {
1078             _mesa_scale_and_bias_depth_uint(ctx, width, data);
1079          }
1080          pipe_put_tile_z(pipe, dest_surf, destX, destY, width, 1, data);
1081       }
1082    }
1083    else {
1084       /* RGBA format */
1085       for (row = 0; row < height; row++, srcY++, destY += yStep) {
1086          float data[4 * MAX_WIDTH];
1087          pipe_get_tile_rgba(pipe, src_surf, srcX, srcY, width, 1, data);
1088          /* XXX we're ignoring convolution for now */
1089          if (ctx->_ImageTransferState) {
1090             _mesa_apply_rgba_transfer_ops(ctx,
1091                           ctx->_ImageTransferState & ~IMAGE_CONVOLUTION_BIT,
1092                           width, (GLfloat (*)[4]) data);
1093          }
1094          pipe_put_tile_rgba(pipe, dest_surf, destX, destY, width, 1, data);
1095       }
1096    }
1097 }
1098
1099
1100
1101
1102 /**
1103  * Do a CopyTex[Sub]Image using an optimized hardware (blit) path.
1104  * Note that the region to copy has already been clip tested.
1105  *
1106  * Note: srcY=0=Bottom of renderbuffer
1107  *
1108  * \return GL_TRUE if success, GL_FALSE if failure (use a fallback)
1109  */
1110 static void
1111 do_copy_texsubimage(GLcontext *ctx,
1112                     GLenum target, GLint level,
1113                     GLint destX, GLint destY, GLint destZ,
1114                     GLint srcX, GLint srcY,
1115                     GLsizei width, GLsizei height)
1116 {
1117    struct gl_texture_unit *texUnit =
1118       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1119    struct gl_texture_object *texObj =
1120       _mesa_select_tex_object(ctx, texUnit, target);
1121    struct gl_texture_image *texImage =
1122       _mesa_select_tex_image(ctx, texObj, target, level);
1123    struct st_texture_image *stImage = st_texture_image(texImage);
1124    struct st_texture_object *stObj = st_texture_object(texObj);
1125    GLenum baseFormat = texImage->InternalFormat;
1126    struct gl_framebuffer *fb = ctx->ReadBuffer;
1127    struct st_renderbuffer *strb;
1128    struct pipe_context *pipe = ctx->st->pipe;
1129    struct pipe_screen *screen = pipe->screen;
1130    struct pipe_surface *dest_surface;
1131    uint dest_format, src_format;
1132    uint do_flip = FALSE;
1133    GLboolean use_fallback = GL_TRUE;
1134
1135    (void) texImage;
1136
1137    /* determine if copying depth or color data */
1138    if (baseFormat == GL_DEPTH_COMPONENT) {
1139       strb = st_renderbuffer(fb->_DepthBuffer);
1140    }
1141    else if (baseFormat == GL_DEPTH_STENCIL_EXT) {
1142       strb = st_renderbuffer(fb->_StencilBuffer);
1143    }
1144    else {
1145       /* baseFormat == GL_RGB, GL_RGBA, GL_ALPHA, etc */
1146       strb = st_renderbuffer(fb->_ColorReadBuffer);
1147    }
1148
1149    assert(strb);
1150    assert(strb->surface);
1151    assert(stImage->pt);
1152
1153    if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
1154       srcY = strb->Base.Height - srcY - height;
1155       do_flip = TRUE;
1156    }
1157
1158    src_format = strb->surface->format;
1159    dest_format = stImage->pt->format;
1160
1161    dest_surface = screen->get_tex_surface(screen, stImage->pt, stImage->face,
1162                                           stImage->level, destZ);
1163
1164    if (ctx->_ImageTransferState == 0x0 &&
1165        strb->surface->buffer &&
1166        dest_surface->buffer) {
1167       /* do blit-style copy */
1168
1169       /* XXX may need to invert image depending on window
1170        * vs. user-created FBO
1171        */
1172
1173 #if 0
1174       /* A bit of fiddling to get the blitter to work with -ve
1175        * pitches.  But we get a nice inverted blit this way, so it's
1176        * worth it:
1177        */
1178       intelEmitCopyBlit(intel,
1179                         stImage->pt->cpp,
1180                         -src->pitch,
1181                         src->buffer,
1182                         src->height * src->pitch * src->cpp,
1183                         stImage->pt->pitch,
1184                         stImage->pt->region->buffer,
1185                         dest_offset,
1186                         x, y + height, dstx, dsty, width, height,
1187                         GL_COPY); /* ? */
1188 #else
1189
1190       if (src_format == dest_format) {
1191           pipe->surface_copy(pipe,
1192                              do_flip,
1193                              /* dest */
1194                              dest_surface,
1195                              destX, destY,
1196                              /* src */
1197                              strb->surface,
1198                              srcX, srcY,
1199                              /* size */
1200                              width, height);
1201           use_fallback = GL_FALSE;
1202       }
1203       else if (screen->is_format_supported(screen, strb->surface->format,
1204                                            PIPE_TEXTURE) &&
1205                screen->is_format_supported(screen, dest_surface->format,
1206                                            PIPE_SURFACE)) {
1207          util_blit_pixels(ctx->st->blit,
1208                           strb->surface,
1209                           srcX, do_flip ? srcY + height : srcY,
1210                           srcX + width, do_flip ? srcY : srcY + height,
1211                           dest_surface,
1212                           destX, destY, destX + width, destY + height,
1213                           0.0, PIPE_TEX_MIPFILTER_NEAREST);
1214          use_fallback = GL_FALSE;
1215       }
1216 #endif
1217    }
1218
1219    if (use_fallback) {
1220       fallback_copy_texsubimage(ctx, target, level,
1221                                 strb, stImage, baseFormat,
1222                                 destX, destY, destZ,
1223                                 srcX, srcY, width, height);
1224    }
1225
1226    pipe_surface_reference(&dest_surface, NULL);
1227
1228    pipe->texture_update(pipe, stObj->pt, stImage->face, (1 << level));
1229
1230    if (level == texObj->BaseLevel && texObj->GenerateMipmap) {
1231       ctx->Driver.GenerateMipmap(ctx, target, texObj);
1232    }
1233 }
1234
1235
1236
1237 static void
1238 st_CopyTexImage1D(GLcontext * ctx, GLenum target, GLint level,
1239                   GLenum internalFormat,
1240                   GLint x, GLint y, GLsizei width, GLint border)
1241 {
1242    struct gl_texture_unit *texUnit =
1243       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1244    struct gl_texture_object *texObj =
1245       _mesa_select_tex_object(ctx, texUnit, target);
1246    struct gl_texture_image *texImage =
1247       _mesa_select_tex_image(ctx, texObj, target, level);
1248
1249 #if 0
1250    if (border)
1251       goto fail;
1252 #endif
1253
1254    /* Setup or redefine the texture object, texture and texture
1255     * image.  Don't populate yet.
1256     */
1257    ctx->Driver.TexImage1D(ctx, target, level, internalFormat,
1258                           width, border,
1259                           GL_RGBA, CHAN_TYPE, NULL,
1260                           &ctx->DefaultPacking, texObj, texImage);
1261
1262    do_copy_texsubimage(ctx, target, level,
1263                        0, 0, 0,
1264                        x, y, width, 1);
1265 }
1266
1267
1268 static void
1269 st_CopyTexImage2D(GLcontext * ctx, GLenum target, GLint level,
1270                   GLenum internalFormat,
1271                   GLint x, GLint y, GLsizei width, GLsizei height,
1272                   GLint border)
1273 {
1274    struct gl_texture_unit *texUnit =
1275       &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1276    struct gl_texture_object *texObj =
1277       _mesa_select_tex_object(ctx, texUnit, target);
1278    struct gl_texture_image *texImage =
1279       _mesa_select_tex_image(ctx, texObj, target, level);
1280
1281 #if 0
1282    if (border)
1283       goto fail;
1284 #endif
1285
1286    /* Setup or redefine the texture object, texture and texture
1287     * image.  Don't populate yet.
1288     */
1289    ctx->Driver.TexImage2D(ctx, target, level, internalFormat,
1290                           width, height, border,
1291                           GL_RGBA, CHAN_TYPE, NULL,
1292                           &ctx->DefaultPacking, texObj, texImage);
1293
1294
1295    do_copy_texsubimage(ctx, target, level,
1296                        0, 0, 0,
1297                        x, y, width, height);
1298 }
1299
1300
1301 static void
1302 st_CopyTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
1303                      GLint xoffset, GLint x, GLint y, GLsizei width)
1304 {
1305    const GLint yoffset = 0, zoffset = 0;
1306    const GLsizei height = 1;
1307    do_copy_texsubimage(ctx, target, level,
1308                        xoffset, yoffset, zoffset,
1309                        x, y, width, height);
1310 }
1311
1312
1313 static void
1314 st_CopyTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
1315                      GLint xoffset, GLint yoffset,
1316                      GLint x, GLint y, GLsizei width, GLsizei height)
1317 {
1318    const GLint zoffset = 0;
1319    do_copy_texsubimage(ctx, target, level,
1320                        xoffset, yoffset, zoffset,
1321                        x, y, width, height);
1322 }
1323
1324
1325 static void
1326 st_CopyTexSubImage3D(GLcontext * ctx, GLenum target, GLint level,
1327                      GLint xoffset, GLint yoffset, GLint zoffset,
1328                      GLint x, GLint y, GLsizei width, GLsizei height)
1329 {
1330    do_copy_texsubimage(ctx, target, level,
1331                        xoffset, yoffset, zoffset,
1332                        x, y, width, height);
1333 }
1334
1335
1336
1337
1338 /**
1339  * Compute which mipmap levels that really need to be sent to the hardware.
1340  * This depends on the base image size, GL_TEXTURE_MIN_LOD,
1341  * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
1342  */
1343 static void
1344 calculate_first_last_level(struct st_texture_object *stObj)
1345 {
1346    struct gl_texture_object *tObj = &stObj->base;
1347
1348    /* These must be signed values.  MinLod and MaxLod can be negative numbers,
1349     * and having firstLevel and lastLevel as signed prevents the need for
1350     * extra sign checks.
1351     */
1352    int firstLevel;
1353    int lastLevel;
1354
1355    /* Yes, this looks overly complicated, but it's all needed.
1356     */
1357    switch (tObj->Target) {
1358    case GL_TEXTURE_1D:
1359    case GL_TEXTURE_2D:
1360    case GL_TEXTURE_3D:
1361    case GL_TEXTURE_CUBE_MAP:
1362       if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
1363          /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
1364           */
1365          firstLevel = lastLevel = tObj->BaseLevel;
1366       }
1367       else {
1368          firstLevel = 0;
1369          lastLevel = MIN2(tObj->MaxLevel, tObj->Image[0][0]->WidthLog2);
1370       }
1371       break;
1372    case GL_TEXTURE_RECTANGLE_NV:
1373    case GL_TEXTURE_4D_SGIS:
1374       firstLevel = lastLevel = 0;
1375       break;
1376    default:
1377       return;
1378    }
1379
1380    stObj->lastLevel = lastLevel;
1381 }
1382
1383
1384 static void
1385 copy_image_data_to_texture(struct st_context *st,
1386                            struct st_texture_object *stObj,
1387                            GLuint dstLevel,
1388                            struct st_texture_image *stImage)
1389 {
1390    if (stImage->pt) {
1391       /* Copy potentially with the blitter:
1392        */
1393       st_texture_image_copy(st->pipe,
1394                             stObj->pt, dstLevel,  /* dest texture, level */
1395                             stImage->pt, /* src texture */
1396                             stImage->face
1397                             );
1398
1399       pipe_texture_release(&stImage->pt);
1400    }
1401    else if (stImage->base.Data) {
1402       assert(stImage->base.Data != NULL);
1403
1404       /* More straightforward upload.
1405        */
1406       st_texture_image_data(st->pipe,
1407                                stObj->pt,
1408                                stImage->face,
1409                                dstLevel,
1410                                stImage->base.Data,
1411                                stImage->base.RowStride,
1412                                stImage->base.RowStride *
1413                                stImage->base.Height);
1414       _mesa_align_free(stImage->base.Data);
1415       stImage->base.Data = NULL;
1416    }
1417
1418    pipe_texture_reference(&stImage->pt, stObj->pt);
1419 }
1420
1421
1422 /**
1423  * Called during state validation.  When this function is finished,
1424  * the texture object should be ready for rendering.
1425  * \return GL_TRUE for success, GL_FALSE for failure (out of mem)
1426  */
1427 GLboolean
1428 st_finalize_texture(GLcontext *ctx,
1429                     struct pipe_context *pipe,
1430                     struct gl_texture_object *tObj,
1431                     GLboolean *needFlush)
1432 {
1433    struct st_texture_object *stObj = st_texture_object(tObj);
1434    const GLuint nr_faces = (stObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
1435    int comp_byte = 0;
1436    int cpp;
1437    GLuint face;
1438    struct st_texture_image *firstImage;
1439
1440    *needFlush = GL_FALSE;
1441
1442    /* We know/require this is true by now:
1443     */
1444    assert(stObj->base._Complete);
1445
1446    /* What levels must the texture include at a minimum?
1447     */
1448    calculate_first_last_level(stObj);
1449    firstImage = st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]);
1450
1451 #if 0
1452    /* Fallback case:
1453     */
1454    if (firstImage->base.Border) {
1455       if (stObj->pt) {
1456          pipe_texture_release(&stObj->pt);
1457       }
1458       return GL_FALSE;
1459    }
1460 #endif
1461
1462    /* If both firstImage and stObj point to a texture which can contain
1463     * all active images, favour firstImage.  Note that because of the
1464     * completeness requirement, we know that the image dimensions
1465     * will match.
1466     */
1467    if (firstImage->pt &&
1468        firstImage->pt != stObj->pt &&
1469        firstImage->pt->last_level >= stObj->lastLevel) {
1470
1471       if (stObj->pt)
1472          pipe_texture_release(&stObj->pt);
1473
1474       pipe_texture_reference(&stObj->pt, firstImage->pt);
1475    }
1476
1477    if (firstImage->base.IsCompressed) {
1478       comp_byte = compressed_num_bytes(firstImage->base.TexFormat->MesaFormat);
1479       cpp = comp_byte;
1480    }
1481    else {
1482       cpp = firstImage->base.TexFormat->TexelBytes;
1483    }
1484
1485    /* Check texture can hold all active levels.  Check texture matches
1486     * target, imageFormat, etc.
1487     */
1488    if (stObj->pt &&
1489        (stObj->pt->target != gl_target_to_pipe(stObj->base.Target) ||
1490         stObj->pt->format !=
1491         st_mesa_format_to_pipe_format(firstImage->base.TexFormat->MesaFormat) ||
1492         stObj->pt->last_level < stObj->lastLevel ||
1493         stObj->pt->cpp != cpp ||
1494         stObj->pt->compressed != firstImage->base.IsCompressed)) {
1495       pipe_texture_release(&stObj->pt);
1496    }
1497
1498
1499    /* May need to create a new texture:
1500     */
1501    if (!stObj->pt) {
1502       stObj->pt = st_texture_create(ctx->st,
1503                                     gl_target_to_pipe(stObj->base.Target),
1504                                     st_mesa_format_to_pipe_format(firstImage->base.TexFormat->MesaFormat),
1505                                     stObj->lastLevel,
1506                                     firstImage->base.Width2,
1507                                     firstImage->base.Height2,
1508                                     firstImage->base.Depth2,
1509                                     comp_byte);
1510       if (!stObj->pt) {
1511          _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
1512          return GL_FALSE;
1513       }
1514    }
1515
1516    /* Pull in any images not in the object's texture:
1517     */
1518    for (face = 0; face < nr_faces; face++) {
1519       GLuint level;
1520       for (level = 0; level <= stObj->lastLevel; level++) {
1521          struct st_texture_image *stImage =
1522             st_texture_image(stObj->base.Image[face][stObj->base.BaseLevel + level]);
1523
1524          /* Need to import images in main memory or held in other textures.
1525           */
1526          if (stImage && stObj->pt != stImage->pt) {
1527             copy_image_data_to_texture(ctx->st, stObj, level, stImage);
1528             *needFlush = GL_TRUE;
1529             pipe->texture_update(pipe, stObj->pt, face, (1 << level));
1530          }
1531       }
1532    }
1533
1534    return GL_TRUE;
1535 }
1536
1537
1538
1539
1540 void
1541 st_init_texture_functions(struct dd_function_table *functions)
1542 {
1543    functions->ChooseTextureFormat = st_ChooseTextureFormat;
1544    functions->TexImage1D = st_TexImage1D;
1545    functions->TexImage2D = st_TexImage2D;
1546    functions->TexImage3D = st_TexImage3D;
1547    functions->TexSubImage1D = st_TexSubImage1D;
1548    functions->TexSubImage2D = st_TexSubImage2D;
1549    functions->TexSubImage3D = st_TexSubImage3D;
1550    functions->CopyTexImage1D = st_CopyTexImage1D;
1551    functions->CopyTexImage2D = st_CopyTexImage2D;
1552    functions->CopyTexSubImage1D = st_CopyTexSubImage1D;
1553    functions->CopyTexSubImage2D = st_CopyTexSubImage2D;
1554    functions->CopyTexSubImage3D = st_CopyTexSubImage3D;
1555    functions->GenerateMipmap = st_generate_mipmap;
1556
1557    functions->GetTexImage = st_GetTexImage;
1558
1559    /* compressed texture functions */
1560    functions->CompressedTexImage2D = st_CompressedTexImage2D;
1561    functions->GetCompressedTexImage = st_GetCompressedTexImage;
1562    functions->CompressedTextureSize = _mesa_compressed_texture_size;
1563
1564    functions->NewTextureObject = st_NewTextureObject;
1565    functions->NewTextureImage = st_NewTextureImage;
1566    functions->DeleteTexture = st_DeleteTextureObject;
1567    functions->FreeTexImageData = st_FreeTextureImageData;
1568    functions->UpdateTexturePalette = 0;
1569    functions->IsTextureResident = st_IsTextureResident;
1570
1571    functions->TextureMemCpy = do_memcpy;
1572
1573    /* XXX Temporary until we can query pipe's texture sizes */
1574    functions->TestProxyTexImage = _mesa_test_proxy_teximage;
1575 }