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_tex_layout.h"
  32 #include "intel_chipset.h"
  33 #ifndef I915
  34 #include "brw_state.h"
  35 #endif
  36 #include "main/enums.h"
  37
  38 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  39
  40
  41 static GLenum
  42 target_to_target(GLenum target)
  43 {
  44    switch (target) {
  45    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  46    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  47    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  48    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  49    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  50    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  51       return GL_TEXTURE_CUBE_MAP_ARB;
  52    default:
  53       return target;
  54    }
  55 }
  56
  57
  58 static struct intel_mipmap_tree *
  59 intel_miptree_create_internal(struct intel_context *intel,
  60                               GLenum target,
  61                               GLenum internal_format,
  62                               GLuint first_level,
  63                               GLuint last_level,
  64                               GLuint width0,
  65                               GLuint height0,
  66                               GLuint depth0, GLuint cpp, GLuint compress_byte,
  67                               uint32_t tiling)
  68 {
  69    GLboolean ok;
  70    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  71
  72    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  73        _mesa_lookup_enum_by_nr(target),
  74        _mesa_lookup_enum_by_nr(internal_format),
  75        first_level, last_level, mt);
  76
  77    mt->target = target_to_target(target);
  78    mt->internal_format = internal_format;
  79    mt->first_level = first_level;
  80    mt->last_level = last_level;
  81    mt->width0 = width0;
  82    mt->height0 = height0;
  83    mt->depth0 = depth0;
  84    mt->cpp = compress_byte ? compress_byte : cpp;
  85    mt->compressed = compress_byte ? 1 : 0;
  86    mt->refcount = 1;
  87    mt->pitch = 0;
  88
  89 #ifdef I915
  90    if (IS_945(intel->intelScreen->deviceID))
  91       ok = i945_miptree_layout(intel, mt, tiling);
  92    else
  93       ok = i915_miptree_layout(intel, mt, tiling);
  94 #else
  95    ok = brw_miptree_layout(intel, mt, tiling);
  96 #endif
  97
  98    if (!ok) {
  99       free(mt);
 100       DBG("%s not okay - returning NULL\n", __FUNCTION__);
 101       return NULL;
 102    }
 103
 104    return mt;
 105 }
 106
 107
 108 struct intel_mipmap_tree *
 109 intel_miptree_create(struct intel_context *intel,
 110                      GLenum target,
 111                      GLenum base_format,
 112                      GLenum internal_format,
 113                      GLuint first_level,
 114                      GLuint last_level,
 115                      GLuint width0,
 116                      GLuint height0,
 117                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 118                      GLboolean expect_accelerated_upload)
 119 {
 120    struct intel_mipmap_tree *mt;
 121    uint32_t tiling;
 122
 123    if (intel->use_texture_tiling && compress_byte == 0 &&
 124        intel->intelScreen->kernel_exec_fencing) {
 125       if (IS_965(intel->intelScreen->deviceID) &&
 126           (base_format == GL_DEPTH_COMPONENT ||
 127            base_format == GL_DEPTH_STENCIL_EXT))
 128          tiling = I915_TILING_Y;
 129       else
 130          tiling = I915_TILING_X;
 131    } else
 132       tiling = I915_TILING_NONE;
 133
 134    mt = intel_miptree_create_internal(intel, target, internal_format,
 135                                       first_level, last_level, width0,
 136                                       height0, depth0, cpp, compress_byte,
 137                                       tiling);
 138    /*
 139     * pitch == 0 || height == 0  indicates the null texture
 140     */
 141    if (!mt || !mt->pitch || !mt->total_height)
 142       return NULL;
 143
 144    mt->region = intel_region_alloc(intel,
 145                                    tiling,
 146                                    mt->cpp,
 147                                    mt->pitch,
 148                                    mt->total_height,
 149                                    mt->pitch,
 150                                    expect_accelerated_upload);
 151
 152    if (!mt->region) {
 153        free(mt);
 154        return NULL;
 155    }
 156
 157    return mt;
 158 }
 159
 160
 161 struct intel_mipmap_tree *
 162 intel_miptree_create_for_region(struct intel_context *intel,
 163                                 GLenum target,
 164                                 GLenum internal_format,
 165                                 GLuint first_level,
 166                                 GLuint last_level,
 167                                 struct intel_region *region,
 168                                 GLuint depth0,
 169                                 GLuint compress_byte)
 170 {
 171    struct intel_mipmap_tree *mt;
 172
 173    mt = intel_miptree_create_internal(intel, target, internal_format,
 174                                       first_level, last_level,
 175                                       region->width, region->height, 1,
 176                                       region->cpp, compress_byte,
 177                                       I915_TILING_NONE);
 178    if (!mt)
 179       return mt;
 180 #if 0
 181    if (mt->pitch != region->pitch) {
 182       fprintf(stderr,
 183               "region pitch (%d) doesn't match mipmap tree pitch (%d)\n",
 184               region->pitch, mt->pitch);
 185       free(mt);
 186       return NULL;
 187    }
 188 #else
 189    /* The mipmap tree pitch is aligned to 64 bytes to make sure render
 190     * to texture works, but we don't need that for texturing from a
 191     * pixmap.  Just override it here. */
 192    mt->pitch = region->pitch;
 193 #endif
 194
 195    intel_region_reference(&mt->region, region);
 196
 197    return mt;
 198 }
 199
 200
 201 /**
 202  * intel_miptree_pitch_align:
 203  *
 204  * @intel: intel context pointer
 205  *
 206  * @mt: the miptree to compute pitch alignment for
 207  *
 208  * @pitch: the natural pitch value
 209  *
 210  * Given @pitch, compute a larger value which accounts for
 211  * any necessary alignment required by the device
 212  */
 213 int intel_miptree_pitch_align (struct intel_context *intel,
 214                                struct intel_mipmap_tree *mt,
 215                                uint32_t tiling,
 216                                int pitch)
 217 {
 218 #ifdef I915
 219    GLcontext *ctx = &intel->ctx;
 220 #endif
 221
 222    if (!mt->compressed) {
 223       int pitch_align;
 224
 225       if (intel->ttm) {
 226          /* XXX: Align pitch to multiple of 64 bytes for now to allow
 227           * render-to-texture to work in all cases. This should probably be
 228           * replaced at some point by some scheme to only do this when really
 229           * necessary.
 230           */
 231          pitch_align = 64;
 232       } else {
 233          pitch_align = 4;
 234       }
 235
 236       if (tiling == I915_TILING_X)
 237          pitch_align = 512;
 238       else if (tiling == I915_TILING_Y)
 239          pitch_align = 128;
 240
 241       pitch = ALIGN(pitch * mt->cpp, pitch_align);
 242
 243 #ifdef I915
 244       /* XXX: At least the i915 seems very upset when the pitch is a multiple
 245        * of 1024 and sometimes 512 bytes - performance can drop by several
 246        * times. Go to the next multiple of the required alignment for now.
 247        */
 248       if (!(pitch & 511) &&
 249          (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
 250          pitch += pitch_align;
 251 #endif
 252
 253       pitch /= mt->cpp;
 254    }
 255    return pitch;
 256 }
 257
 258
 259 void
 260 intel_miptree_reference(struct intel_mipmap_tree **dst,
 261                         struct intel_mipmap_tree *src)
 262 {
 263    src->refcount++;
 264    *dst = src;
 265    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 266 }
 267
 268
 269 void
 270 intel_miptree_release(struct intel_context *intel,
 271                       struct intel_mipmap_tree **mt)
 272 {
 273    if (!*mt)
 274       return;
 275
 276    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 277    if (--(*mt)->refcount <= 0) {
 278       GLuint i;
 279
 280       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 281
 282 #ifndef I915
 283       /* Free up cached binding tables holding a reference on our buffer, to
 284        * avoid excessive memory consumption.
 285        *
 286        * This isn't as aggressive as we could be, as we'd like to do
 287        * it from any time we free the last ref on a region.  But intel_region.c
 288        * is context-agnostic.  Perhaps our constant state cache should be, as
 289        * well.
 290        */
 291       brw_state_cache_bo_delete(&brw_context(&intel->ctx)->surface_cache,
 292                                 (*mt)->region->buffer);
 293 #endif
 294
 295       intel_region_release(&((*mt)->region));
 296
 297       for (i = 0; i < MAX_TEXTURE_LEVELS; i++)
 298          if ((*mt)->level[i].image_offset)
 299             free((*mt)->level[i].image_offset);
 300
 301       free(*mt);
 302    }
 303    *mt = NULL;
 304 }
 305
 306
 307 /**
 308  * Can the image be pulled into a unified mipmap tree?  This mirrors
 309  * the completeness test in a lot of ways.
 310  *
 311  * Not sure whether I want to pass gl_texture_image here.
 312  */
 313 GLboolean
 314 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 315                           struct gl_texture_image *image,
 316                           GLuint face, GLuint level)
 317 {
 318    /* Images with borders are never pulled into mipmap trees.
 319     */
 320    if (image->Border ||
 321        ((image->_BaseFormat == GL_DEPTH_COMPONENT) &&
 322         ((image->TexObject->WrapS == GL_CLAMP_TO_BORDER) ||
 323          (image->TexObject->WrapT == GL_CLAMP_TO_BORDER))))
 324       return GL_FALSE;
 325
 326    if (image->InternalFormat != mt->internal_format ||
 327        image->IsCompressed != mt->compressed)
 328       return GL_FALSE;
 329
 330    if (!image->IsCompressed &&
 331        !mt->compressed &&
 332        image->TexFormat->TexelBytes != mt->cpp)
 333       return GL_FALSE;
 334
 335    /* Test image dimensions against the base level image adjusted for
 336     * minification.  This will also catch images not present in the
 337     * tree, changed targets, etc.
 338     */
 339    if (image->Width != mt->level[level].width ||
 340        image->Height != mt->level[level].height ||
 341        image->Depth != mt->level[level].depth)
 342       return GL_FALSE;
 343
 344    return GL_TRUE;
 345 }
 346
 347
 348 void
 349 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 350                              GLuint level,
 351                              GLuint nr_images,
 352                              GLuint x, GLuint y,
 353                              GLuint w, GLuint h, GLuint d)
 354 {
 355    mt->level[level].width = w;
 356    mt->level[level].height = h;
 357    mt->level[level].depth = d;
 358    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 359    mt->level[level].nr_images = nr_images;
 360
 361    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 362        level, w, h, d, x, y, mt->level[level].level_offset);
 363
 364    /* Not sure when this would happen, but anyway:
 365     */
 366    if (mt->level[level].image_offset) {
 367       free(mt->level[level].image_offset);
 368       mt->level[level].image_offset = NULL;
 369    }
 370
 371    assert(nr_images);
 372
 373    mt->level[level].image_offset = malloc(nr_images * sizeof(GLuint));
 374    mt->level[level].image_offset[0] = 0;
 375 }
 376
 377
 378 void
 379 intel_miptree_set_image_offset_ex(struct intel_mipmap_tree *mt,
 380                                   GLuint level, GLuint img,
 381                                   GLuint x, GLuint y,
 382                                   GLuint offset)
 383 {
 384    if (img == 0 && level == 0)
 385       assert(x == 0 && y == 0);
 386
 387    assert(img < mt->level[level].nr_images);
 388
 389    mt->level[level].image_offset[img] = (x + y * mt->pitch) * mt->cpp + offset;
 390
 391    DBG("%s level %d img %d pos %d,%d image_offset %x\n",
 392        __FUNCTION__, level, img, x, y, mt->level[level].image_offset[img]);
 393 }
 394
 395
 396 void
 397 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 398                                GLuint level, GLuint img,
 399                                GLuint x, GLuint y)
 400 {
 401     intel_miptree_set_image_offset_ex(mt, level, img, x, y, 0);
 402 }
 403
 404
 405 /**
 406  * Return offset to the start of a 2D slice of a texture (a mipmap level,
 407  * cube face, 3D Z slice).
 408  * \param mt  the texture object/miptree
 409  * \param face  cube map face in [0,5] or zero for non-cube textures
 410  * \param level  mipmap level
 411  * \param zslice  Z slice of a 3D texture, or zero for non-3D textures
 412  */
 413 GLuint
 414 intel_miptree_image_offset(const struct intel_mipmap_tree *mt,
 415                            GLuint face, GLuint level, GLuint zslice)
 416 {
 417    GLuint offset = mt->level[level].level_offset;
 418
 419    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB)
 420       offset += mt->level[level].image_offset[face];
 421    else if (mt->target == GL_TEXTURE_3D)
 422       offset += mt->level[level].image_offset[zslice];
 423
 424    return offset;
 425 }
 426
 427
 428 /**
 429  * Map a teximage in a mipmap tree.
 430  * \param row_stride  returns row stride in bytes
 431  * \param image_stride  returns image stride in bytes (for 3D textures).
 432  * \param image_offsets pointer to array of pixel offsets from the returned
 433  *        pointer to each depth image
 434  * \return address of mapping
 435  */
 436 GLubyte *
 437 intel_miptree_image_map(struct intel_context * intel,
 438                         struct intel_mipmap_tree * mt,
 439                         GLuint face,
 440                         GLuint level,
 441                         GLuint * row_stride, GLuint * image_offsets)
 442 {
 443    DBG("%s \n", __FUNCTION__);
 444
 445    if (row_stride)
 446       *row_stride = mt->pitch * mt->cpp;
 447
 448    if (mt->target == GL_TEXTURE_3D) {
 449       int i;
 450
 451       for (i = 0; i < mt->level[level].depth; i++)
 452          image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
 453    } else {
 454       assert(mt->level[level].depth == 1);
 455       assert(mt->target == GL_TEXTURE_CUBE_MAP ||
 456              mt->level[level].image_offset[0] == 0);
 457       image_offsets[0] = 0;
 458    }
 459
 460    return (intel_region_map(intel, mt->region) +
 461            intel_miptree_image_offset(mt, face, level, 0));
 462 }
 463
 464
 465 void
 466 intel_miptree_image_unmap(struct intel_context *intel,
 467                           struct intel_mipmap_tree *mt)
 468 {
 469    DBG("%s\n", __FUNCTION__);
 470    intel_region_unmap(intel, mt->region);
 471 }
 472
 473
 474 /**
 475  * Upload data for a particular image.
 476  */
 477 void
 478 intel_miptree_image_data(struct intel_context *intel,
 479                          struct intel_mipmap_tree *dst,
 480                          GLuint face,
 481                          GLuint level,
 482                          void *src,
 483                          GLuint src_row_pitch,
 484                          GLuint src_image_pitch)
 485 {
 486    const GLuint depth = dst->level[level].depth;
 487    GLuint i;
 488
 489    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 490    for (i = 0; i < depth; i++) {
 491       GLuint dst_offset = intel_miptree_image_offset(dst, face, level, i);
 492       GLuint height = dst->level[level].height;
 493
 494       if (dst->compressed)
 495          height = (height + 3) / 4;
 496
 497       intel_region_data(intel,
 498                         dst->region,
 499                         dst_offset,
 500                         0, 0,                             /* dstx, dsty */
 501                         src,
 502                         src_row_pitch,
 503                         0, 0,                             /* source x, y */
 504                         dst->level[level].width, height); /* width, height */
 505
 506       src = (char *)src + src_image_pitch * dst->cpp;
 507    }
 508 }
 509
 510
 511 /**
 512  * Copy mipmap image between trees
 513  */
 514 void
 515 intel_miptree_image_copy(struct intel_context *intel,
 516                          struct intel_mipmap_tree *dst,
 517                          GLuint face, GLuint level,
 518                          struct intel_mipmap_tree *src)
 519 {
 520    GLuint width = src->level[level].width;
 521    GLuint height = src->level[level].height;
 522    GLuint depth = src->level[level].depth;
 523    GLuint i;
 524    GLboolean success;
 525
 526    if (dst->compressed) {
 527        GLuint align_w, align_h;
 528
 529        intel_get_texture_alignment_unit(dst->internal_format,
 530                                         &align_w, &align_h);
 531        height = (height + 3) / 4;
 532        width = ALIGN(width, align_w);
 533    }
 534
 535    for (i = 0; i < depth; i++) {
 536       GLuint dst_offset = intel_miptree_image_offset(dst, face, level, i);
 537       GLuint src_offset = intel_miptree_image_offset(src, face, level, i);
 538
 539       success = intel_region_copy(intel,
 540                                   dst->region, dst_offset,
 541                                   0, 0,
 542                                   src->region, src_offset,
 543                                   0, 0, width, height, GL_COPY);
 544       if (!success) {
 545          GLubyte *src_ptr, *dst_ptr;
 546
 547          src_ptr = intel_region_map(intel, src->region);
 548          dst_ptr = intel_region_map(intel, dst->region);
 549
 550          _mesa_copy_rect(dst_ptr + dst_offset,
 551                          dst->cpp,
 552                          dst->pitch,
 553                          0, 0, width, height,
 554                          src_ptr + src_offset,
 555                          src->pitch,
 556                          0, 0);
 557          intel_region_unmap(intel, src->region);
 558          intel_region_unmap(intel, dst->region);
 559       }
 560    }
 561 }