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 #ifndef I915
  33 #include "brw_state.h"
  34 #endif
  35 #include "main/enums.h"
  36
  37 #define FILE_DEBUG_FLAG DEBUG_MIPTREE
  38
  39
  40 static GLenum
  41 target_to_target(GLenum target)
  42 {
  43    switch (target) {
  44    case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
  45    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
  46    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
  47    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
  48    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
  49    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
  50       return GL_TEXTURE_CUBE_MAP_ARB;
  51    default:
  52       return target;
  53    }
  54 }
  55
  56
  57 static struct intel_mipmap_tree *
  58 intel_miptree_create_internal(struct intel_context *intel,
  59                               GLenum target,
  60                               GLenum internal_format,
  61                               GLuint first_level,
  62                               GLuint last_level,
  63                               GLuint width0,
  64                               GLuint height0,
  65                               GLuint depth0, GLuint cpp, GLuint compress_byte,
  66                               uint32_t tiling)
  67 {
  68    GLboolean ok;
  69    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
  70
  71    DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
  72        _mesa_lookup_enum_by_nr(target),
  73        _mesa_lookup_enum_by_nr(internal_format),
  74        first_level, last_level, mt);
  75
  76    mt->target = target_to_target(target);
  77    mt->internal_format = internal_format;
  78    mt->first_level = first_level;
  79    mt->last_level = last_level;
  80    mt->width0 = width0;
  81    mt->height0 = height0;
  82    mt->depth0 = depth0;
  83    mt->cpp = compress_byte ? compress_byte : cpp;
  84    mt->compressed = compress_byte ? 1 : 0;
  85    mt->refcount = 1;
  86    mt->pitch = 0;
  87
  88 #ifdef I915
  89    if (intel->is_945)
  90       ok = i945_miptree_layout(intel, mt, tiling);
  91    else
  92       ok = i915_miptree_layout(intel, mt, tiling);
  93 #else
  94    ok = brw_miptree_layout(intel, mt, tiling);
  95 #endif
  96
  97    if (!ok) {
  98       free(mt);
  99       DBG("%s not okay - returning NULL\n", __FUNCTION__);
 100       return NULL;
 101    }
 102
 103    return mt;
 104 }
 105
 106
 107 struct intel_mipmap_tree *
 108 intel_miptree_create(struct intel_context *intel,
 109                      GLenum target,
 110                      GLenum base_format,
 111                      GLenum internal_format,
 112                      GLuint first_level,
 113                      GLuint last_level,
 114                      GLuint width0,
 115                      GLuint height0,
 116                      GLuint depth0, GLuint cpp, GLuint compress_byte,
 117                      GLboolean expect_accelerated_upload)
 118 {
 119    struct intel_mipmap_tree *mt;
 120    uint32_t tiling;
 121
 122    if (intel->use_texture_tiling && compress_byte == 0) {
 123       if (intel->gen >= 4 &&
 124           (base_format == GL_DEPTH_COMPONENT ||
 125            base_format == GL_DEPTH_STENCIL_EXT))
 126          tiling = I915_TILING_Y;
 127       else
 128          tiling = I915_TILING_X;
 129    } else
 130       tiling = I915_TILING_NONE;
 131
 132    mt = intel_miptree_create_internal(intel, target, internal_format,
 133                                       first_level, last_level, width0,
 134                                       height0, depth0, cpp, compress_byte,
 135                                       tiling);
 136    /*
 137     * pitch == 0 || height == 0  indicates the null texture
 138     */
 139    if (!mt || !mt->pitch || !mt->total_height) {
 140       free(mt);
 141       return NULL;
 142    }
 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       /* XXX: Align pitch to multiple of 64 bytes for now to allow
 226        * render-to-texture to work in all cases. This should probably be
 227        * replaced at some point by some scheme to only do this when really
 228        * necessary.
 229        */
 230       pitch_align = 64;
 231
 232       if (tiling == I915_TILING_X)
 233          pitch_align = 512;
 234       else if (tiling == I915_TILING_Y)
 235          pitch_align = 128;
 236
 237       pitch = ALIGN(pitch * mt->cpp, pitch_align);
 238
 239 #ifdef I915
 240       /* Do a little adjustment to linear allocations so that we avoid
 241        * hitting the same channel of memory for 2 different pages when
 242        * reading a 2x2 subspan or doing bilinear filtering.
 243        */
 244       if (tiling == I915_TILING_NONE && !(pitch & 511) &&
 245          (pitch + pitch_align) < (1 << ctx->Const.MaxTextureLevels))
 246          pitch += pitch_align;
 247 #endif
 248
 249       pitch /= mt->cpp;
 250    }
 251    return pitch;
 252 }
 253
 254
 255 void
 256 intel_miptree_reference(struct intel_mipmap_tree **dst,
 257                         struct intel_mipmap_tree *src)
 258 {
 259    src->refcount++;
 260    *dst = src;
 261    DBG("%s %p refcount now %d\n", __FUNCTION__, src, src->refcount);
 262 }
 263
 264
 265 void
 266 intel_miptree_release(struct intel_context *intel,
 267                       struct intel_mipmap_tree **mt)
 268 {
 269    if (!*mt)
 270       return;
 271
 272    DBG("%s %p refcount will be %d\n", __FUNCTION__, *mt, (*mt)->refcount - 1);
 273    if (--(*mt)->refcount <= 0) {
 274       GLuint i;
 275
 276       DBG("%s deleting %p\n", __FUNCTION__, *mt);
 277
 278 #ifndef I915
 279       /* Free up cached binding tables holding a reference on our buffer, to
 280        * avoid excessive memory consumption.
 281        *
 282        * This isn't as aggressive as we could be, as we'd like to do
 283        * it from any time we free the last ref on a region.  But intel_region.c
 284        * is context-agnostic.  Perhaps our constant state cache should be, as
 285        * well.
 286        */
 287       brw_state_cache_bo_delete(&brw_context(&intel->ctx)->surface_cache,
 288                                 (*mt)->region->buffer);
 289 #endif
 290
 291       intel_region_release(&((*mt)->region));
 292
 293       for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
 294          free((*mt)->level[i].x_offset);
 295          free((*mt)->level[i].y_offset);
 296       }
 297
 298       free(*mt);
 299    }
 300    *mt = NULL;
 301 }
 302
 303
 304 /**
 305  * Can the image be pulled into a unified mipmap tree?  This mirrors
 306  * the completeness test in a lot of ways.
 307  *
 308  * Not sure whether I want to pass gl_texture_image here.
 309  */
 310 GLboolean
 311 intel_miptree_match_image(struct intel_mipmap_tree *mt,
 312                           struct gl_texture_image *image)
 313 {
 314    GLboolean isCompressed = _mesa_is_format_compressed(image->TexFormat);
 315    struct intel_texture_image *intelImage = intel_texture_image(image);
 316    GLuint level = intelImage->level;
 317
 318    /* Images with borders are never pulled into mipmap trees. */
 319    if (image->Border)
 320       return GL_FALSE;
 321
 322    if (image->InternalFormat != mt->internal_format ||
 323        isCompressed != mt->compressed)
 324       return GL_FALSE;
 325
 326    if (!isCompressed &&
 327        !mt->compressed &&
 328        _mesa_get_format_bytes(image->TexFormat) != mt->cpp)
 329       return GL_FALSE;
 330
 331    /* Test image dimensions against the base level image adjusted for
 332     * minification.  This will also catch images not present in the
 333     * tree, changed targets, etc.
 334     */
 335    if (image->Width != mt->level[level].width ||
 336        image->Height != mt->level[level].height ||
 337        image->Depth != mt->level[level].depth)
 338       return GL_FALSE;
 339
 340    return GL_TRUE;
 341 }
 342
 343
 344 void
 345 intel_miptree_set_level_info(struct intel_mipmap_tree *mt,
 346                              GLuint level,
 347                              GLuint nr_images,
 348                              GLuint x, GLuint y,
 349                              GLuint w, GLuint h, GLuint d)
 350 {
 351    mt->level[level].width = w;
 352    mt->level[level].height = h;
 353    mt->level[level].depth = d;
 354    mt->level[level].level_offset = (x + y * mt->pitch) * mt->cpp;
 355    mt->level[level].level_x = x;
 356    mt->level[level].level_y = y;
 357    mt->level[level].nr_images = nr_images;
 358
 359    DBG("%s level %d size: %d,%d,%d offset %d,%d (0x%x)\n", __FUNCTION__,
 360        level, w, h, d, x, y, mt->level[level].level_offset);
 361
 362    assert(nr_images);
 363    assert(!mt->level[level].x_offset);
 364
 365    mt->level[level].x_offset = malloc(nr_images * sizeof(GLuint));
 366    mt->level[level].x_offset[0] = mt->level[level].level_x;
 367    mt->level[level].y_offset = malloc(nr_images * sizeof(GLuint));
 368    mt->level[level].y_offset[0] = mt->level[level].level_y;
 369 }
 370
 371
 372 void
 373 intel_miptree_set_image_offset(struct intel_mipmap_tree *mt,
 374                                GLuint level, GLuint img,
 375                                GLuint x, GLuint y)
 376 {
 377    if (img == 0 && level == 0)
 378       assert(x == 0 && y == 0);
 379
 380    assert(img < mt->level[level].nr_images);
 381
 382    mt->level[level].x_offset[img] = mt->level[level].level_x + x;
 383    mt->level[level].y_offset[img] = mt->level[level].level_y + y;
 384
 385    DBG("%s level %d img %d pos %d,%d\n",
 386        __FUNCTION__, level, img,
 387        mt->level[level].x_offset[img], mt->level[level].y_offset[img]);
 388 }
 389
 390
 391 void
 392 intel_miptree_get_image_offset(struct intel_mipmap_tree *mt,
 393                                GLuint level, GLuint face, GLuint depth,
 394                                GLuint *x, GLuint *y)
 395 {
 396    if (mt->target == GL_TEXTURE_CUBE_MAP_ARB) {
 397       *x = mt->level[level].x_offset[face];
 398       *y = mt->level[level].y_offset[face];
 399    } else if (mt->target == GL_TEXTURE_3D) {
 400       *x = mt->level[level].x_offset[depth];
 401       *y = mt->level[level].y_offset[depth];
 402    } else {
 403       *x = mt->level[level].x_offset[0];
 404       *y = mt->level[level].y_offset[0];
 405    }
 406 }
 407
 408 /**
 409  * Map a teximage in a mipmap tree.
 410  * \param row_stride  returns row stride in bytes
 411  * \param image_stride  returns image stride in bytes (for 3D textures).
 412  * \param image_offsets pointer to array of pixel offsets from the returned
 413  *        pointer to each depth image
 414  * \return address of mapping
 415  */
 416 GLubyte *
 417 intel_miptree_image_map(struct intel_context * intel,
 418                         struct intel_mipmap_tree * mt,
 419                         GLuint face,
 420                         GLuint level,
 421                         GLuint * row_stride, GLuint * image_offsets)
 422 {
 423    GLuint x, y;
 424    DBG("%s \n", __FUNCTION__);
 425
 426    if (row_stride)
 427       *row_stride = mt->pitch * mt->cpp;
 428
 429    if (mt->target == GL_TEXTURE_3D) {
 430       int i;
 431
 432       for (i = 0; i < mt->level[level].depth; i++) {
 433
 434          intel_miptree_get_image_offset(mt, level, face, i,
 435                                         &x, &y);
 436          image_offsets[i] = x + y * mt->pitch;
 437       }
 438
 439       return intel_region_map(intel, mt->region);
 440    } else {
 441       assert(mt->level[level].depth == 1);
 442       intel_miptree_get_image_offset(mt, level, face, 0,
 443                                      &x, &y);
 444       image_offsets[0] = 0;
 445
 446       return intel_region_map(intel, mt->region) +
 447          (x + y * mt->pitch) * mt->cpp;
 448    }
 449 }
 450
 451
 452 void
 453 intel_miptree_image_unmap(struct intel_context *intel,
 454                           struct intel_mipmap_tree *mt)
 455 {
 456    DBG("%s\n", __FUNCTION__);
 457    intel_region_unmap(intel, mt->region);
 458 }
 459
 460
 461 /**
 462  * Upload data for a particular image.
 463  */
 464 void
 465 intel_miptree_image_data(struct intel_context *intel,
 466                          struct intel_mipmap_tree *dst,
 467                          GLuint face,
 468                          GLuint level,
 469                          void *src,
 470                          GLuint src_row_pitch,
 471                          GLuint src_image_pitch)
 472 {
 473    const GLuint depth = dst->level[level].depth;
 474    GLuint i;
 475
 476    DBG("%s: %d/%d\n", __FUNCTION__, face, level);
 477    for (i = 0; i < depth; i++) {
 478       GLuint dst_x, dst_y, height;
 479
 480       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 481
 482       height = dst->level[level].height;
 483       if(dst->compressed)
 484          height = (height + 3) / 4;
 485
 486       intel_region_data(intel,
 487                         dst->region, 0, dst_x, dst_y,
 488                         src,
 489                         src_row_pitch,
 490                         0, 0,                             /* source x, y */
 491                         dst->level[level].width, height); /* width, height */
 492
 493       src = (char *)src + src_image_pitch * dst->cpp;
 494    }
 495 }
 496
 497
 498 /**
 499  * Copy mipmap image between trees
 500  */
 501 void
 502 intel_miptree_image_copy(struct intel_context *intel,
 503                          struct intel_mipmap_tree *dst,
 504                          GLuint face, GLuint level,
 505                          struct intel_mipmap_tree *src)
 506 {
 507    GLuint width = src->level[level].width;
 508    GLuint height = src->level[level].height;
 509    GLuint depth = src->level[level].depth;
 510    GLuint src_x, src_y, dst_x, dst_y;
 511    GLuint i;
 512    GLboolean success;
 513
 514    if (dst->compressed) {
 515        GLuint align_w, align_h;
 516
 517        intel_get_texture_alignment_unit(dst->internal_format,
 518                                         &align_w, &align_h);
 519        height = (height + 3) / 4;
 520        width = ALIGN(width, align_w);
 521    }
 522
 523    for (i = 0; i < depth; i++) {
 524       intel_miptree_get_image_offset(src, level, face, i, &src_x, &src_y);
 525       intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
 526       success = intel_region_copy(intel,
 527                                   dst->region, 0, dst_x, dst_y,
 528                                   src->region, 0, src_x, src_y,
 529                                   width, height, GL_FALSE,
 530                                   GL_COPY);
 531       if (!success) {
 532          GLubyte *src_ptr, *dst_ptr;
 533
 534          src_ptr = intel_region_map(intel, src->region);
 535          dst_ptr = intel_region_map(intel, dst->region);
 536
 537          _mesa_copy_rect(dst_ptr + dst->cpp * (dst_x + dst_y * dst->pitch),
 538                          dst->cpp,
 539                          dst->pitch,
 540                          0, 0, width, height,
 541                          src_ptr + src->cpp * (src_x + src_y * src->pitch),
 542                          src->pitch,
 543                          0, 0);
 544          intel_region_unmap(intel, src->region);
 545          intel_region_unmap(intel, dst->region);
 546       }
 547    }
 548 }