src/mesa/drivers/dri/intel/intel_mipmap_tree.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2006 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 "intel_context.h"
  29 #include "intel_mipmap_tree.h"
  30 #include "intel_regions.h"
  31 #include "intel_chipset.h"
  32 #ifndef I915
  33 #include "brw_state.h"
  34 #endif
  35 #include "main/enums.h"
  36
  37 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  38
  39 static GLenum
  40 target_to_target(GLenum target)
  41 {
  42    switch (target) {
  43    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  44    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  45    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  46    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  47    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  48    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  49       return GL_TEXTURE_CUBE_MAP_ARB;
  50    default:
  51       return target;
  52    }
  53 }
  54
  55 static struct intel_mipmap_tree *
  56 intel_miptree_create_internal(struct intel_context *intel,
  57                               GLenum target,
  58                               GLenum internal_format,
  59                               GLuint first_level,
  60                               GLuint last_level,
  61                               GLuint width0,
  62                               GLuint height0,
  63                               GLuint depth0, GLuint cpp, GLuint compress_byte,
  64                               uint32_t tiling)
  65 {
  66    GLboolean ok;
  67    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  68
  69    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  70        _mesa_lookup_enum_by_nr(target),
  71        _mesa_lookup_enum_by_nr(internal_format),
  72        first_level, last_level, mt);
  73
  74    mt->target = target_to_target(target);
  75    mt->internal_format = internal_format;
  76    mt->first_level = first_level;
  77    mt->last_level = last_level;
  78    mt->width0 = width0;
  79    mt->height0 = height0;
  80    mt->depth0 = depth0;
  81    mt->cpp = compress_byte ? compress_byte : cpp;
  82    mt->compressed = compress_byte ? 1 : 0;
  83    mt->refcount = 1;
  84    mt->pitch = 0;
  85
  86 #ifdef I915
  87    if (IS_945(intel->intelScreen->deviceID))
  88       ok = i945_miptree_layout(intel, mt, tiling);
  89    else
  90       ok = i915_miptree_layout(intel, mt, tiling);
  91 #else
  92    ok = brw_miptree_layout(intel, mt, tiling);
  93 #endif
  94
  95    if (!ok) {
  96       free(mt);
  97       DBG("%s not okay - returning NULL\n", __FUNCTION__);
  98       return NULL;
  99    }
 100
 101    return mt;
 102 }
 103
 104 struct intel_mipmap_tree *
 105 intel_miptree_create(struct intel_context *intel,
 106                      GLenum target,
 107                      GLenum base_format,
 108                      GLenum internal_format,
 109                      GLuint first_level,
 110                      GLuint last_level,
 111                      GLuint width0,
 112                      GLuint height0,
 113                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 114                      GLboolean expect_accelerated_upload)
 115 {
 116    struct intel_mipmap_tree *mt;
 117    uint32_t tiling;
 118
 119    if (intel->use_texture_tiling && compress_byte == 0 &&
 120        intel->intelScreen->kernel_exec_fencing) {
 121       if (IS_965(intel->intelScreen->deviceID) &&
 122           (base_format == GL_DEPTH_COMPONENT ||
 123            base_format == GL_DEPTH_STENCIL_EXT))
 124          tiling = I915_TILING_Y;
 125       else
 126          tiling = I915_TILING_X;
 127    } else
 128       tiling = I915_TILING_NONE;
 129
 130    mt = intel_miptree_create_internal(intel, target, internal_format,
 131                                       first_level, last_level, width0,
 132                                       height0, depth0, cpp, compress_byte,
 133                                       tiling);
 134    /*
 135     * pitch == 0 || height == 0  indicates the null texture
 136     */
 137    if (!mt || !mt->pitch || !mt->total_height)
 138       return NULL;
 139
 140    mt->region = intel_region_alloc(intel,
 141                                    tiling,
 142                                    mt->cpp,
 143                                    mt->pitch,
 144                                    mt->total_height,
 145                                    mt->pitch,
 146                                    expect_accelerated_upload);
 147
 148    if (!mt->region) {
 149        free(mt);
 150        return NULL;
 151    }
 152
 153    return mt;
 154 }
 155
 156 struct intel_mipmap_tree *
 157 intel_miptree_create_for_region(struct intel_context *intel,
 158                                 GLenum target,
 159                                 GLenum internal_format,
 160                                 GLuint first_level,
 161                                 GLuint last_level,
 162                                 struct intel_region *region,
 163                                 GLuint depth0,
 164                                 GLuint compress_byte)
 165 {
 166    struct intel_mipmap_tree *mt;
 167
 168    mt = intel_miptree_create_internal(intel, target, internal_format,
 169                                       first_level, last_level,
 170                                       region->width, region->height, 1,
 171                                       region->cpp, compress_byte,
 172                                       I915_TILING_NONE);
 173    if (!mt)
 174       return mt;
 175 #if 0
 176    if (mt->pitch != region->pitch) {
 177       fprintf(stderr,
 178               "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
 179               region->pitch, mt->pitch);
 180       free(mt);
 181       return NULL;
 182    }
 183 #else
 184    /* The mipmap tree pitch is aligned to 64 bytes to make sure render
 185     * to texture works, but we don't need that for texturing from a
 186     * pixmap.  Just override it here. */
 187    mt->pitch = region->pitch;
 188 #endif
 189
 190    intel_region_reference(&mt->region, region);
 191
 192    return mt;
 193  }
 194
 195 /**
 196  * intel_miptree_pitch_align:
 197  *
 198  * @intel: intel context pointer
 199  *
 200  * @mt: the miptree to compute pitch alignment for
 201  *
 202  * @pitch: the natural pitch value
 203  *
 204  * Given @pitch, compute a larger value which accounts for
 205  * any necessary alignment required by the device
 206  */
 207
 208 int intel_miptree_pitch_align (struct intel_context *intel,
 209                                struct intel_mipmap_tree *mt,
 210                                uint32_t tiling,
 211                                int pitch)
 212 {
 213 #ifdef I915
 214    GLcontext *ctx = &intel->ctx;
 215 #endif
 216
 217    if (!mt->compressed) {
 218       int pitch_align;
 219
 220       if (intel->ttm) {
 221          /* XXX: Align pitch to multiple of 64 bytes for now to allow
 222           * render-to-texture to work in all cases. This should probably be
 223           * replaced at some point by some scheme to only do this when really
 224           * necessary.
 225           */
 226          pitch_align = 64;
 227       } else {
 228          pitch_align = 4;
 229       }
 230
 231       if (tiling == I915_TILING_X)
 232          pitch_align = 512;
 233       else if (tiling == I915_TILING_Y)
 234          pitch_align = 128;
 235
 236       pitch = ALIGN(pitch * mt->cpp, pitch_align);
 237
 238 #ifdef I915
 239       /* XXX: At least the i915 seems very upset when the pitch is a multiple
 240        * of 1024 and sometimes 512 bytes - performance can drop by several
 241        * times. Go to the next multiple of the required alignment for now.
 242        */
 243       if (!(pitch & 511) &&
 244          (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
 245          pitch += pitch_align;
 246 #endif
 247
 248       pitch /= mt->cpp;
 249    }
 250    return pitch;
 251 }
 252
 253 void
 254 intel_miptree_reference(struct intel_mipmap_tree **dst,
 255                         struct intel_mipmap_tree *src)
 256 {
 257    src->refcount++;
 258    *dst = src;
 259    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 260 }
 261
 262 void
 263 intel_miptree_release(struct intel_context *intel,
 264                       struct intel_mipmap_tree **mt)
 265 {
 266    if (!*mt)
 267       return;
 268
 269    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 270    if (--(*mt)->refcount <= 0) {
 271       GLuint i;
 272
 273       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 274
 275 #ifndef I915
 276       /* Free up cached binding tables holding a reference on our buffer, to
 277        * avoid excessive memory consumption.
 278        *
 279        * This isn't as aggressive as we could be, as we'd like to do
 280        * it from any time we free the last ref on a region.  But intel_region.c
 281        * is context-agnostic.  Perhaps our constant state cache should be, as
 282        * well.
 283        */
 284       brw_state_cache_bo_delete(&brw_context(&intel->ctx)->surface_cache,
 285                                 (*mt)->region->buffer);
 286 #endif
 287
 288       intel_region_release(&((*mt)->region));
 289
 290       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 291          if ((*mt)->level[i].image_offset)
 292             free((*mt)->level[i].image_offset);
 293
 294       free(*mt);
 295    }
 296    *mt = NULL;
 297 }
 298
 299
 300
 301
 302 /* Can the image be pulled into a unified mipmap tree.  This mirrors
 303  * the completeness test in a lot of ways.
 304  *
 305  * Not sure whether I want to pass gl_texture_image here.
 306  */
 307 GLboolean
 308 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 309                           struct gl_texture_image *image,
 310                           GLuint face, GLuint level)
 311 {
 312    /* Images with borders are never pulled into mipmap trees.
 313     */
 314    if (image->Border ||
 315        ((image->_BaseFormat == GL_DEPTH_COMPONENT) &&
 316         ((image->TexObject->WrapS == GL_CLAMP_TO_BORDER) ||
 317          (image->TexObject->WrapT == GL_CLAMP_TO_BORDER))))
 318       return GL_FALSE;
 319
 320    if (image->InternalFormat != mt->internal_format ||
 321        image->IsCompressed != mt->compressed)
 322       return GL_FALSE;
 323
 324    if (!image->IsCompressed &&
 325        !mt->compressed &&
 326        image->TexFormat->TexelBytes != mt->cpp)
 327       return GL_FALSE;
 328
 329    /* Test image dimensions against the base level image adjusted for
 330     * minification.  This will also catch images not present in the
 331     * tree, changed targets, etc.
 332     */
 333    if (image->Width != mt->level[level].width ||
 334        image->Height != mt->level[level].height ||
 335        image->Depth != mt->level[level].depth)
 336       return GL_FALSE;
 337
 338    return GL_TRUE;
 339 }
 340
 341
 342 void
 343 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 344                              GLuint level,
 345                              GLuint nr_images,
 346                              GLuint x, GLuint y,
 347                              GLuint w, GLuint h, GLuint d)
 348 {
 349    mt->level[level].width = w;
 350    mt->level[level].height = h;
 351    mt->level[level].depth = d;
 352    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 353    mt->level[level].nr_images = nr_images;
 354
 355    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 356        level, w, h, d, x, y, mt->level[level].level_offset);
 357
 358    /* Not sure when this would happen, but anyway:
 359     */
 360    if (mt->level[level].image_offset) {
 361       free(mt->level[level].image_offset);
 362       mt->level[level].image_offset = NULL;
 363    }
 364
 365    assert(nr_images);
 366
 367    mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 368    mt->level[level].image_offset[0] = 0;
 369 }
 370
 371
 372 void
 373 intel_miptree_set_image_offset_ex(struct intel_mipmap_tree *mt,
 374                                   GLuint level, GLuint img,
 375                                   GLuint x, GLuint y,
 376                                   GLuint offset)
 377 {
 378    if (img == 0 && level == 0)
 379       assert(x == 0 && y == 0);
 380
 381    assert(img < mt->level[level].nr_images);
 382
 383    mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp + offset;
 384
 385    DBG("%s level %d img %d pos %d,%d image_offset %x\n",
 386        __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
 387 }
 388
 389 void
 390 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 391                                GLuint level, GLuint img,
 392                                GLuint x, GLuint y)
 393 {
 394     intel_miptree_set_image_offset_ex(mt, level, img, x, y, 0);
 395 }
 396
 397
 398 /**
 399  * Return offset to the start of a 2D slice of a texture (a mipmap level,
 400  * cube face, 3D Z slice).
 401  * \param mt  the texture object/miptree
 402  * \param face  cube map face in [0,5] or zero for non-cube textures
 403  * \param level  mipmap level
 404  * \param zslice  Z slice of a 3D texture, or zero for non-3D textures
 405  */
 406 GLuint
 407 intel_miptree_image_offset(const struct intel_mipmap_tree *mt,
 408                            GLuint face, GLuint level, GLuint zslice)
 409 {
 410    GLuint offset = mt->level[level].level_offset;
 411
 412    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 413       offset += mt->level[level].image_offset[face];
 414    else if (mt->target == GL_TEXTURE_3D)
 415       offset += mt->level[level].image_offset[zslice];
 416
 417    return offset;
 418 }
 419
 420
 421
 422 /**
 423  * Map a teximage in a mipmap tree.
 424  * \param row_stride  returns row stride in bytes
 425  * \param image_stride  returns image stride in bytes (for 3D textures).
 426  * \param image_offsets pointer to array of pixel offsets from the returned
 427  *        pointer to each depth image
 428  * \return address of mapping
 429  */
 430 GLubyte *
 431 intel_miptree_image_map(struct intel_context * intel,
 432                         struct intel_mipmap_tree * mt,
 433                         GLuint face,
 434                         GLuint level,
 435                         GLuint * row_stride, GLuint * image_offsets)
 436 {
 437    DBG("%s \n", __FUNCTION__);
 438
 439    if (row_stride)
 440       *row_stride = mt->pitch * mt->cpp;
 441
 442    if (mt->target == GL_TEXTURE_3D) {
 443       int i;
 444
 445       for (i = 0; i < mt->level[level].depth; i++)
 446          image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
 447    } else {
 448       assert(mt->level[level].depth == 1);
 449       assert(mt->target == GL_TEXTURE_CUBE_MAP ||
 450              mt->level[level].image_offset[0] == 0);
 451       image_offsets[0] = 0;
 452    }
 453
 454    return (intel_region_map(intel, mt->region) +
 455            intel_miptree_image_offset(mt, face, level, 0));
 456 }
 457
 458 void
 459 intel_miptree_image_unmap(struct intel_context *intel,
 460                           struct intel_mipmap_tree *mt)
 461 {
 462    DBG("%s\n", __FUNCTION__);
 463    intel_region_unmap(intel, mt->region);
 464 }
 465
 466
 467
 468 /* Upload data for a particular image.
 469  */
 470 void
 471 intel_miptree_image_data(struct intel_context *intel,
 472                          struct intel_mipmap_tree *dst,
 473                          GLuint face,
 474                          GLuint level,
 475                          void *src,
 476                          GLuint src_row_pitch,
 477                          GLuint src_image_pitch)
 478 {
 479    GLuint depth = dst->level[level].depth;
 480    GLuint i;
 481    GLuint height = 0;
 482
 483    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 484    for (i = 0; i < depth; i++) {
 485       GLuint dst_offset = intel_miptree_image_offset(dst, face, level, i);
 486       height = dst->level[level].height;
 487       if(dst->compressed)
 488          height = (height + 3) / 4;
 489       intel_region_data(intel,
 490                         dst->region,
 491                         dst_offset,
 492                         0, 0,                             /* dstx, dsty */
 493                         src,
 494                         src_row_pitch,
 495                         0, 0,                             /* source x, y */
 496                         dst->level[level].width, height); /* width, height */
 497
 498       src = (char *)src + src_image_pitch * dst->cpp;
 499    }
 500 }
 501
 502 extern void intel_get_texture_alignment_unit(GLenum, GLuint *, GLuint *);
 503 /* Copy mipmap image between trees
 504  */
 505 void
 506 intel_miptree_image_copy(struct intel_context *intel,
 507                          struct intel_mipmap_tree *dst,
 508                          GLuint face, GLuint level,
 509                          struct intel_mipmap_tree *src)
 510 {
 511    GLuint width = src->level[level].width;
 512    GLuint height = src->level[level].height;
 513    GLuint depth = src->level[level].depth;
 514    GLuint i;
 515    GLboolean success;
 516
 517    if (dst->compressed) {
 518        GLuint align_w, align_h;
 519
 520        intel_get_texture_alignment_unit(dst->internal_format, &align_w, &align_h);
 521        height = (height + 3) / 4;
 522        width = ALIGN(width, align_w);
 523    }
 524
 525    for (i = 0; i < depth; i++) {
 526       GLuint dst_offset = intel_miptree_image_offset(dst, face, level, i);
 527       GLuint src_offset = intel_miptree_image_offset(src, face, level, i);
 528
 529       success = intel_region_copy(intel,
 530                                   dst->region, dst_offset,
 531                                   0, 0,
 532                                   src->region, src_offset,
 533                                   0, 0, width, height, GL_COPY);
 534       if (!success) {
 535          GLubyte *src_ptr, *dst_ptr;
 536
 537          src_ptr = intel_region_map(intel, src->region);
 538          dst_ptr = intel_region_map(intel, dst->region);
 539
 540          _mesa_copy_rect(dst_ptr + dst_offset,
 541                          dst->cpp,
 542                          dst->pitch,
 543                          0, 0, width, height,
 544                          src_ptr + src_offset,
 545                          src->pitch,
 546                          0, 0);
 547          intel_region_unmap(intel, src->region);
 548          intel_region_unmap(intel, dst->region);
 549       }
 550    }
 551 }