source/blender/blenloader/intern/writefile.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  19  * All rights reserved.
  20  *
  21  *
  22  * Contributor(s): Blender Foundation
  23  *
  24  * ***** END GPL LICENSE BLOCK *****
  25  */
  26
  27 /** \file blender/blenloader/intern/writefile.c
  28  *  \ingroup blenloader
  29  */
  30
  31
  32 /**
  33  *
  34  * FILE FORMAT
  35  * ===========
  36  *
  37  * IFF-style structure  (but not IFF compatible!)
  38  *
  39  * start file:
  40  * <pre>
  41  *     BLENDER_V100    12 bytes  (versie 1.00)
  42  *                     V = big endian, v = little endian
  43  *                     _ = 4 byte pointer, - = 8 byte pointer
  44  * </pre>
  45  *
  46  * datablocks: (also see struct #BHead).
  47  * <pre>
  48  *     <bh.code>           4 chars
  49  *     <bh.len>            int,  len data after BHead
  50  *     <bh.old>            void,  old pointer
  51  *     <bh.SDNAnr>         int
  52  *     <bh.nr>             int, in case of array: number of structs
  53  *     data
  54  *     ...
  55  *     ...
  56  * </pre>
  57  *
  58  * Almost all data in Blender are structures. Each struct saved
  59  * gets a BHead header.  With BHead the struct can be linked again
  60  * and compared with StructDNA .
  61  *
  62  *
  63  * WRITE
  64  * =====
  65  *
  66  * Preferred writing order: (not really a must, but why would you do it random?)
  67  * Any case: direct data is ALWAYS after the lib block
  68  *
  69  * (Local file data)
  70  * - for each LibBlock
  71  *   - write LibBlock
  72  *   - write associated direct data
  73  * (External file data)
  74  * - per library
  75  *   - write library block
  76  *   - per LibBlock
  77  *     - write the ID of LibBlock
  78  * - write #TEST (#RenderInfo struct. 128x128 blend file preview is optional).
  79  * - write #GLOB (#FileGlobal struct) (some global vars).
  80  * - write #DNA1 (#SDNA struct)
  81  * - write #USER (#UserDef struct) if filename is ``~/.config/blender/X.XX/config/startup.blend``.
  82  */
  83
  84
  85 #include <math.h>
  86 #include <fcntl.h>
  87 #include <limits.h>
  88 #include <stdio.h>
  89 #include <string.h>
  90 #include <stdlib.h>
  91
  92 #ifdef WIN32
  93 #  include <zlib.h>  /* odd include order-issue */
  94 #  include "winsock2.h"
  95 #  include <io.h>
  96 #  include "BLI_winstuff.h"
  97 #else
  98 #  include <unistd.h>  /* FreeBSD, for write() and close(). */
  99 #endif
 100
 101 #include "BLI_utildefines.h"
 102
 103 /* allow writefile to use deprecated functionality (for forward compatibility code) */
 104 #define DNA_DEPRECATED_ALLOW
 105 /* Allow using DNA struct members that are marked as private for read/write.
 106  * Note: Each header that uses this needs to define its own way of handling
 107  * it. There's no generic implementation, direct use does nothing. */
 108 #define DNA_PRIVATE_READ_WRITE_ALLOW
 109
 110 #include "DNA_anim_types.h"
 111 #include "DNA_armature_types.h"
 112 #include "DNA_brush_types.h"
 113 #include "DNA_cachefile_types.h"
 114 #include "DNA_camera_types.h"
 115 #include "DNA_cloth_types.h"
 116 #include "DNA_constraint_types.h"
 117 #include "DNA_dynamicpaint_types.h"
 118 #include "DNA_genfile.h"
 119 #include "DNA_group_types.h"
 120 #include "DNA_gpencil_types.h"
 121 #include "DNA_fileglobal_types.h"
 122 #include "DNA_key_types.h"
 123 #include "DNA_lattice_types.h"
 124 #include "DNA_lamp_types.h"
 125 #include "DNA_layer_types.h"
 126 #include "DNA_linestyle_types.h"
 127 #include "DNA_meta_types.h"
 128 #include "DNA_mesh_types.h"
 129 #include "DNA_meshdata_types.h"
 130 #include "DNA_material_types.h"
 131 #include "DNA_node_types.h"
 132 #include "DNA_object_types.h"
 133 #include "DNA_object_force_types.h"
 134 #include "DNA_packedFile_types.h"
 135 #include "DNA_particle_types.h"
 136 #include "DNA_lightprobe_types.h"
 137 #include "DNA_rigidbody_types.h"
 138 #include "DNA_scene_types.h"
 139 #include "DNA_sdna_types.h"
 140 #include "DNA_sequence_types.h"
 141 #include "DNA_smoke_types.h"
 142 #include "DNA_space_types.h"
 143 #include "DNA_screen_types.h"
 144 #include "DNA_speaker_types.h"
 145 #include "DNA_sound_types.h"
 146 #include "DNA_text_types.h"
 147 #include "DNA_view3d_types.h"
 148 #include "DNA_vfont_types.h"
 149 #include "DNA_world_types.h"
 150 #include "DNA_windowmanager_types.h"
 151 #include "DNA_workspace_types.h"
 152 #include "DNA_movieclip_types.h"
 153 #include "DNA_mask_types.h"
 154
 155 #include "MEM_guardedalloc.h" // MEM_freeN
 156 #include "BLI_bitmap.h"
 157 #include "BLI_blenlib.h"
 158 #include "BLI_linklist.h"
 159 #include "BLI_mempool.h"
 160
 161 #include "BKE_action.h"
 162 #include "BKE_blender_version.h"
 163 #include "BKE_bpath.h"
 164 #include "BKE_curve.h"
 165 #include "BKE_constraint.h"
 166 #include "BKE_global.h" // for G
 167 #include "BKE_group.h"
 168 #include "BKE_idcode.h"
 169 #include "BKE_library.h" // for  set_listbasepointers
 170 #include "BKE_library_override.h"
 171 #include "BKE_main.h"
 172 #include "BKE_node.h"
 173 #include "BKE_report.h"
 174 #include "BKE_sequencer.h"
 175 #include "BKE_subsurf.h"
 176 #include "BKE_modifier.h"
 177 #include "BKE_fcurve.h"
 178 #include "BKE_pointcache.h"
 179 #include "BKE_mesh.h"
 180 #include "BKE_workspace.h"
 181
 182 #ifdef USE_NODE_COMPAT_CUSTOMNODES
 183 #include "NOD_socket.h"  /* for sock->default_value data */
 184 #endif
 185
 186
 187 #include "BLO_writefile.h"
 188 #include "BLO_readfile.h"
 189 #include "BLO_runtime.h"
 190 #include "BLO_undofile.h"
 191 #include "BLO_blend_defs.h"
 192
 193 #include "readfile.h"
 194
 195 /* for SDNA_TYPE_FROM_STRUCT() macro */
 196 #include "dna_type_offsets.h"
 197
 198 #include <errno.h>
 199
 200 /* ********* my write, buffered writing with minimum size chunks ************ */
 201
 202 /* Use optimal allocation since blocks of this size are kept in memory for undo. */
 203 #define MYWRITE_BUFFER_SIZE (MEM_SIZE_OPTIMAL(1 << 17))  /* 128kb */
 204 #define MYWRITE_MAX_CHUNK   (MEM_SIZE_OPTIMAL(1 << 15))  /* ~32kb */
 205
 206 /** Use if we want to store how many bytes have been written to the file. */
 207 // #define USE_WRITE_DATA_LEN
 208
 209 /* -------------------------------------------------------------------- */
 210 /** \name Internal Write Wrapper's (Abstracts Compression)
 211  * \{ */
 212
 213 typedef enum {
 214         WW_WRAP_NONE = 1,
 215         WW_WRAP_ZLIB,
 216 } eWriteWrapType;
 217
 218 typedef struct WriteWrap WriteWrap;
 219 struct WriteWrap {
 220         /* callbacks */
 221         bool   (*open)(WriteWrap *ww, const char *filepath);
 222         bool   (*close)(WriteWrap *ww);
 223         size_t (*write)(WriteWrap *ww, const char *data, size_t data_len);
 224
 225         /* internal */
 226         union {
 227                 int file_handle;
 228                 gzFile gz_handle;
 229         } _user_data;
 230 };
 231
 232 /* none */
 233 #define FILE_HANDLE(ww) \
 234         (ww)->_user_data.file_handle
 235
 236 static bool ww_open_none(WriteWrap *ww, const char *filepath)
 237 {
 238         int file;
 239
 240         file = BLI_open(filepath, O_BINARY + O_WRONLY + O_CREAT + O_TRUNC, 0666);
 241
 242         if (file != -1) {
 243                 FILE_HANDLE(ww) = file;
 244                 return true;
 245         }
 246         else {
 247                 return false;
 248         }
 249 }
 250 static bool ww_close_none(WriteWrap *ww)
 251 {
 252         return (close(FILE_HANDLE(ww)) != -1);
 253 }
 254 static size_t ww_write_none(WriteWrap *ww, const char *buf, size_t buf_len)
 255 {
 256         return write(FILE_HANDLE(ww), buf, buf_len);
 257 }
 258 #undef FILE_HANDLE
 259
 260 /* zlib */
 261 #define FILE_HANDLE(ww) \
 262         (ww)->_user_data.gz_handle
 263
 264 static bool ww_open_zlib(WriteWrap *ww, const char *filepath)
 265 {
 266         gzFile file;
 267
 268         file = BLI_gzopen(filepath, "wb1");
 269
 270         if (file != Z_NULL) {
 271                 FILE_HANDLE(ww) = file;
 272                 return true;
 273         }
 274         else {
 275                 return false;
 276         }
 277 }
 278 static bool ww_close_zlib(WriteWrap *ww)
 279 {
 280         return (gzclose(FILE_HANDLE(ww)) == Z_OK);
 281 }
 282 static size_t ww_write_zlib(WriteWrap *ww, const char *buf, size_t buf_len)
 283 {
 284         return gzwrite(FILE_HANDLE(ww), buf, buf_len);
 285 }
 286 #undef FILE_HANDLE
 287
 288 /* --- end compression types --- */
 289
 290 static void ww_handle_init(eWriteWrapType ww_type, WriteWrap *r_ww)
 291 {
 292         memset(r_ww, 0, sizeof(*r_ww));
 293
 294         switch (ww_type) {
 295                 case WW_WRAP_ZLIB:
 296                 {
 297                         r_ww->open  = ww_open_zlib;
 298                         r_ww->close = ww_close_zlib;
 299                         r_ww->write = ww_write_zlib;
 300                         break;
 301                 }
 302                 default:
 303                 {
 304                         r_ww->open  = ww_open_none;
 305                         r_ww->close = ww_close_none;
 306                         r_ww->write = ww_write_none;
 307                         break;
 308                 }
 309         }
 310 }
 311
 312 /** \} */
 313
 314 /* -------------------------------------------------------------------- */
 315 /** \name Write Data Type & Functions
 316  * \{ */
 317
 318 typedef struct {
 319         const struct SDNA *sdna;
 320
 321         /** Use for file and memory writing (fixed size of #MYWRITE_BUFFER_SIZE). */
 322         uchar *buf;
 323         /** Number of bytes used in #WriteData.buf (flushed when exceeded). */
 324         int buf_used_len;
 325
 326 #ifdef USE_WRITE_DATA_LEN
 327         /** Total number of bytes written. */
 328         size_t write_len;
 329 #endif
 330
 331         /** Set on unlikely case of an error (ignores further file writing).  */
 332         bool error;
 333
 334         /** #MemFile writing (used for undo). */
 335         struct {
 336                 MemFile      *current;
 337                 MemFile      *compare;
 338                 /** Use to de-duplicate chunks when writing. */
 339                 MemFileChunk *compare_chunk;
 340         } mem;
 341         /** When true, write to #WriteData.current, could also call 'is_undo'. */
 342         bool use_memfile;
 343
 344         /**
 345          * Wrap writing, so we can use zlib or
 346          * other compression types later, see: G_FILE_COMPRESS
 347          * Will be NULL for UNDO.
 348          */
 349         WriteWrap *ww;
 350
 351 #ifdef USE_BMESH_SAVE_AS_COMPAT
 352         bool use_mesh_compat; /* option to save with older mesh format */
 353 #endif
 354 } WriteData;
 355
 356 static WriteData *writedata_new(WriteWrap *ww)
 357 {
 358         WriteData *wd = MEM_callocN(sizeof(*wd), "writedata");
 359
 360         wd->sdna = DNA_sdna_current_get();
 361
 362         wd->ww = ww;
 363
 364         wd->buf = MEM_mallocN(MYWRITE_BUFFER_SIZE, "wd->buf");
 365
 366         return wd;
 367 }
 368
 369 static void writedata_do_write(WriteData *wd, const void *mem, int memlen)
 370 {
 371         if ((wd == NULL) || wd->error || (mem == NULL) || memlen < 1) {
 372                 return;
 373         }
 374
 375         if (UNLIKELY(wd->error)) {
 376                 return;
 377         }
 378
 379         /* memory based save */
 380         if (wd->use_memfile) {
 381                 memfile_chunk_add(wd->mem.current, mem, memlen, &wd->mem.compare_chunk);
 382         }
 383         else {
 384                 if (wd->ww->write(wd->ww, mem, memlen) != memlen) {
 385                         wd->error = true;
 386                 }
 387         }
 388 }
 389
 390 static void writedata_free(WriteData *wd)
 391 {
 392         MEM_freeN(wd->buf);
 393         MEM_freeN(wd);
 394 }
 395
 396 /** \} */
 397
 398 /* -------------------------------------------------------------------- */
 399 /** \name Local Writing API 'mywrite'
 400  * \{ */
 401
 402 /**
 403  * Flush helps the de-duplicating memory for undo-save by logically segmenting data,
 404  * so differences in one part of memory won't cause unrelated data to be duplicated.
 405  */
 406 static void mywrite_flush(WriteData *wd)
 407 {
 408         if (wd->buf_used_len) {
 409                 writedata_do_write(wd, wd->buf, wd->buf_used_len);
 410                 wd->buf_used_len = 0;
 411         }
 412 }
 413
 414 /**
 415  * Low level WRITE(2) wrapper that buffers data
 416  * \param adr Pointer to new chunk of data
 417  * \param len Length of new chunk of data
 418  */
 419 static void mywrite(WriteData *wd, const void *adr, int len)
 420 {
 421         if (UNLIKELY(wd->error)) {
 422                 return;
 423         }
 424
 425         if (UNLIKELY(adr == NULL)) {
 426                 BLI_assert(0);
 427                 return;
 428         }
 429
 430 #ifdef USE_WRITE_DATA_LEN
 431         wd->write_len += len;
 432 #endif
 433
 434         /* if we have a single big chunk, write existing data in
 435          * buffer and write out big chunk in smaller pieces */
 436         if (len > MYWRITE_MAX_CHUNK) {
 437                 if (wd->buf_used_len) {
 438                         writedata_do_write(wd, wd->buf, wd->buf_used_len);
 439                         wd->buf_used_len = 0;
 440                 }
 441
 442                 do {
 443                         int writelen = MIN2(len, MYWRITE_MAX_CHUNK);
 444                         writedata_do_write(wd, adr, writelen);
 445                         adr = (const char *)adr + writelen;
 446                         len -= writelen;
 447                 } while (len > 0);
 448
 449                 return;
 450         }
 451
 452         /* if data would overflow buffer, write out the buffer */
 453         if (len + wd->buf_used_len > MYWRITE_BUFFER_SIZE - 1) {
 454                 writedata_do_write(wd, wd->buf, wd->buf_used_len);
 455                 wd->buf_used_len = 0;
 456         }
 457
 458         /* append data at end of buffer */
 459         memcpy(&wd->buf[wd->buf_used_len], adr, len);
 460         wd->buf_used_len += len;
 461 }
 462
 463 /**
 464  * BeGiN initializer for mywrite
 465  * \param ww: File write wrapper.
 466  * \param compare Previous memory file (can be NULL).
 467  * \param current The current memory file (can be NULL).
 468  * \warning Talks to other functions with global parameters
 469  */
 470 static WriteData *mywrite_begin(WriteWrap *ww, MemFile *compare, MemFile *current)
 471 {
 472         WriteData *wd = writedata_new(ww);
 473
 474         if (current != NULL) {
 475                 wd->mem.current = current;
 476                 wd->mem.compare = compare;
 477                 wd->mem.compare_chunk = compare ? compare->chunks.first : NULL;
 478                 wd->use_memfile = true;
 479         }
 480
 481         return wd;
 482 }
 483
 484 /**
 485  * END the mywrite wrapper
 486  * \return 1 if write failed
 487  * \return unknown global variable otherwise
 488  * \warning Talks to other functions with global parameters
 489  */
 490 static bool mywrite_end(WriteData *wd)
 491 {
 492         if (wd->buf_used_len) {
 493                 writedata_do_write(wd, wd->buf, wd->buf_used_len);
 494                 wd->buf_used_len = 0;
 495         }
 496
 497         const bool err = wd->error;
 498         writedata_free(wd);
 499
 500         return err;
 501 }
 502
 503 /** \} */
 504
 505 /* -------------------------------------------------------------------- */
 506 /** \name Generic DNA File Writing
 507  * \{ */
 508
 509 static void writestruct_at_address_nr(
 510         WriteData *wd, int filecode, const int struct_nr, int nr,
 511         const void *adr, const void *data)
 512 {
 513         BHead bh;
 514         const short *sp;
 515
 516         BLI_assert(struct_nr > 0 && struct_nr < SDNA_TYPE_MAX);
 517
 518         if (adr == NULL || data == NULL || nr == 0) {
 519                 return;
 520         }
 521
 522         /* init BHead */
 523         bh.code = filecode;
 524         bh.old = adr;
 525         bh.nr = nr;
 526
 527         bh.SDNAnr = struct_nr;
 528         sp = wd->sdna->structs[bh.SDNAnr];
 529
 530         bh.len = nr * wd->sdna->typelens[sp[0]];
 531
 532         if (bh.len == 0) {
 533                 return;
 534         }
 535
 536         mywrite(wd, &bh, sizeof(BHead));
 537         mywrite(wd, data, bh.len);
 538 }
 539
 540 static void writestruct_at_address_id(
 541         WriteData *wd, int filecode, const char *structname, int nr,
 542         const void *adr, const void *data)
 543 {
 544         if (adr == NULL || data == NULL || nr == 0) {
 545                 return;
 546         }
 547
 548         const int SDNAnr = DNA_struct_find_nr(wd->sdna, structname);
 549         if (UNLIKELY(SDNAnr == -1)) {
 550                 printf("error: can't find SDNA code <%s>\n", structname);
 551                 return;
 552         }
 553
 554         writestruct_at_address_nr(wd, filecode, SDNAnr, nr, adr, data);
 555 }
 556
 557 static void writestruct_nr(
 558         WriteData *wd, int filecode, const int struct_nr, int nr,
 559         const void *adr)
 560 {
 561         writestruct_at_address_nr(wd, filecode, struct_nr, nr, adr, adr);
 562 }
 563
 564 static void writestruct_id(
 565         WriteData *wd, int filecode, const char *structname, int nr,
 566         const void *adr)
 567 {
 568         writestruct_at_address_id(wd, filecode, structname, nr, adr, adr);
 569 }
 570
 571 static void writedata(WriteData *wd, int filecode, int len, const void *adr)  /* do not use for structs */
 572 {
 573         BHead bh;
 574
 575         if (adr == NULL || len == 0) {
 576                 return;
 577         }
 578
 579         /* align to 4 (writes uninitialized bytes in some cases) */
 580         len = (len + 3) & ~3;
 581
 582         /* init BHead */
 583         bh.code   = filecode;
 584         bh.old    = adr;
 585         bh.nr     = 1;
 586         bh.SDNAnr = 0;
 587         bh.len    = len;
 588
 589         mywrite(wd, &bh, sizeof(BHead));
 590         mywrite(wd, adr, len);
 591 }
 592
 593 /* use this to force writing of lists in same order as reading (using link_list) */
 594 static void writelist_nr(WriteData *wd, int filecode, const int struct_nr, const ListBase *lb)
 595 {
 596         const Link *link = lb->first;
 597
 598         while (link) {
 599                 writestruct_nr(wd, filecode, struct_nr, 1, link);
 600                 link = link->next;
 601         }
 602 }
 603
 604 #if 0
 605 static void writelist_id(WriteData *wd, int filecode, const char *structname, const ListBase *lb)
 606 {
 607         const Link *link = lb->first;
 608         if (link) {
 609
 610                 const int struct_nr = DNA_struct_find_nr(wd->sdna, structname);
 611                 if (struct_nr == -1) {
 612                         printf("error: can't find SDNA code <%s>\n", structname);
 613                         return;
 614                 }
 615
 616                 while (link) {
 617                         writestruct_nr(wd, filecode, struct_nr, 1, link);
 618                         link = link->next;
 619                 }
 620         }
 621 }
 622 #endif
 623
 624 #define writestruct_at_address(wd, filecode, struct_id, nr, adr, data) \
 625         writestruct_at_address_nr(wd, filecode, SDNA_TYPE_FROM_STRUCT(struct_id), nr, adr, data)
 626
 627 #define writestruct(wd, filecode, struct_id, nr, adr) \
 628         writestruct_nr(wd, filecode, SDNA_TYPE_FROM_STRUCT(struct_id), nr, adr)
 629
 630 #define writelist(wd, filecode, struct_id, lb) \
 631         writelist_nr(wd, filecode, SDNA_TYPE_FROM_STRUCT(struct_id), lb)
 632
 633 /** \} */
 634
 635 /* -------------------------------------------------------------------- */
 636 /** \name Typed DNA File Writing
 637  *
 638  * These functions are used by blender's .blend system for file saving/loading.
 639  * \{ */
 640
 641 void IDP_WriteProperty_OnlyData(const IDProperty *prop, void *wd);
 642 void IDP_WriteProperty(const IDProperty *prop, void *wd);
 643
 644 static void IDP_WriteArray(const IDProperty *prop, void *wd)
 645 {
 646         /*REMEMBER to set totalen to len in the linking code!!*/
 647         if (prop->data.pointer) {
 648                 writedata(wd, DATA, MEM_allocN_len(prop->data.pointer), prop->data.pointer);
 649
 650                 if (prop->subtype == IDP_GROUP) {
 651                         IDProperty **array = prop->data.pointer;
 652                         int a;
 653
 654                         for (a = 0; a < prop->len; a++) {
 655                                 IDP_WriteProperty(array[a], wd);
 656                         }
 657                 }
 658         }
 659 }
 660
 661 static void IDP_WriteIDPArray(const IDProperty *prop, void *wd)
 662 {
 663         /*REMEMBER to set totalen to len in the linking code!!*/
 664         if (prop->data.pointer) {
 665                 const IDProperty *array = prop->data.pointer;
 666                 int a;
 667
 668                 writestruct(wd, DATA, IDProperty, prop->len, array);
 669
 670                 for (a = 0; a < prop->len; a++) {
 671                         IDP_WriteProperty_OnlyData(&array[a], wd);
 672                 }
 673         }
 674 }
 675
 676 static void IDP_WriteString(const IDProperty *prop, void *wd)
 677 {
 678         /*REMEMBER to set totalen to len in the linking code!!*/
 679         writedata(wd, DATA, prop->len, prop->data.pointer);
 680 }
 681
 682 static void IDP_WriteGroup(const IDProperty *prop, void *wd)
 683 {
 684         IDProperty *loop;
 685
 686         for (loop = prop->data.group.first; loop; loop = loop->next) {
 687                 IDP_WriteProperty(loop, wd);
 688         }
 689 }
 690
 691 /* Functions to read/write ID Properties */
 692 void IDP_WriteProperty_OnlyData(const IDProperty *prop, void *wd)
 693 {
 694         switch (prop->type) {
 695                 case IDP_GROUP:
 696                         IDP_WriteGroup(prop, wd);
 697                         break;
 698                 case IDP_STRING:
 699                         IDP_WriteString(prop, wd);
 700                         break;
 701                 case IDP_ARRAY:
 702                         IDP_WriteArray(prop, wd);
 703                         break;
 704                 case IDP_IDPARRAY:
 705                         IDP_WriteIDPArray(prop, wd);
 706                         break;
 707         }
 708 }
 709
 710 void IDP_WriteProperty(const IDProperty *prop, void *wd)
 711 {
 712         writestruct(wd, DATA, IDProperty, 1, prop);
 713         IDP_WriteProperty_OnlyData(prop, wd);
 714 }
 715
 716 static void write_iddata(void *wd, const ID *id)
 717 {
 718         /* ID_WM's id->properties are considered runtime only, and never written in .blend file. */
 719         if (id->properties && !ELEM(GS(id->name), ID_WM)) {
 720                 IDP_WriteProperty(id->properties, wd);
 721         }
 722
 723         if (id->override_static) {
 724                 writestruct(wd, DATA, IDOverrideStatic, 1, id->override_static);
 725
 726                 writelist(wd, DATA, IDOverrideStaticProperty, &id->override_static->properties);
 727                 for (IDOverrideStaticProperty *op = id->override_static->properties.first; op; op = op->next) {
 728                         writedata(wd, DATA, strlen(op->rna_path) + 1, op->rna_path);
 729
 730                         writelist(wd, DATA, IDOverrideStaticPropertyOperation, &op->operations);
 731                         for (IDOverrideStaticPropertyOperation *opop = op->operations.first; opop; opop = opop->next) {
 732                                 if (opop->subitem_reference_name) {
 733                                         writedata(wd, DATA, strlen(opop->subitem_reference_name) + 1, opop->subitem_reference_name);
 734                                 }
 735                                 if (opop->subitem_local_name) {
 736                                         writedata(wd, DATA, strlen(opop->subitem_local_name) + 1, opop->subitem_local_name);
 737                                 }
 738                         }
 739                 }
 740         }
 741 }
 742
 743 static void write_previews(WriteData *wd, const PreviewImage *prv_orig)
 744 {
 745         /* Note we write previews also for undo steps. It takes up some memory,
 746          * but not doing so would causes all previews to be re-rendered after
 747          * undo which is too expensive. */
 748         if (prv_orig) {
 749                 PreviewImage prv = *prv_orig;
 750
 751                 /* don't write out large previews if not requested */
 752                 if (!(U.flag & USER_SAVE_PREVIEWS)) {
 753                         prv.w[1] = 0;
 754                         prv.h[1] = 0;
 755                         prv.rect[1] = NULL;
 756                 }
 757                 writestruct_at_address(wd, DATA, PreviewImage, 1, prv_orig, &prv);
 758                 if (prv.rect[0]) {
 759                         writedata(wd, DATA, prv.w[0] * prv.h[0] * sizeof(unsigned int), prv.rect[0]);
 760                 }
 761                 if (prv.rect[1]) {
 762                         writedata(wd, DATA, prv.w[1] * prv.h[1] * sizeof(unsigned int), prv.rect[1]);
 763                 }
 764         }
 765 }
 766
 767 static void write_fmodifiers(WriteData *wd, ListBase *fmodifiers)
 768 {
 769         FModifier *fcm;
 770
 771         /* Write all modifiers first (for faster reloading) */
 772         writelist(wd, DATA, FModifier, fmodifiers);
 773
 774         /* Modifiers */
 775         for (fcm = fmodifiers->first; fcm; fcm = fcm->next) {
 776                 const FModifierTypeInfo *fmi = fmodifier_get_typeinfo(fcm);
 777
 778                 /* Write the specific data */
 779                 if (fmi && fcm->data) {
 780                         /* firstly, just write the plain fmi->data struct */
 781                         writestruct_id(wd, DATA, fmi->structName, 1, fcm->data);
 782
 783                         /* do any modifier specific stuff */
 784                         switch (fcm->type) {
 785                                 case FMODIFIER_TYPE_GENERATOR:
 786                                 {
 787                                         FMod_Generator *data = fcm->data;
 788
 789                                         /* write coefficients array */
 790                                         if (data->coefficients) {
 791                                                 writedata(wd, DATA, sizeof(float) * (data->arraysize), data->coefficients);
 792                                         }
 793
 794                                         break;
 795                                 }
 796                                 case FMODIFIER_TYPE_ENVELOPE:
 797                                 {
 798                                         FMod_Envelope *data = fcm->data;
 799
 800                                         /* write envelope data */
 801                                         if (data->data) {
 802                                                 writestruct(wd, DATA, FCM_EnvelopeData, data->totvert, data->data);
 803                                         }
 804
 805                                         break;
 806                                 }
 807                                 case FMODIFIER_TYPE_PYTHON:
 808                                 {
 809                                         FMod_Python *data = fcm->data;
 810
 811                                         /* Write ID Properties -- and copy this comment EXACTLY for easy finding
 812                                          * of library blocks that implement this.*/
 813                                         IDP_WriteProperty(data->prop, wd);
 814
 815                                         break;
 816                                 }
 817                         }
 818                 }
 819         }
 820 }
 821
 822 static void write_fcurves(WriteData *wd, ListBase *fcurves)
 823 {
 824         FCurve *fcu;
 825
 826         writelist(wd, DATA, FCurve, fcurves);
 827         for (fcu = fcurves->first; fcu; fcu = fcu->next) {
 828                 /* curve data */
 829                 if (fcu->bezt) {
 830                         writestruct(wd, DATA, BezTriple, fcu->totvert, fcu->bezt);
 831                 }
 832                 if (fcu->fpt) {
 833                         writestruct(wd, DATA, FPoint, fcu->totvert, fcu->fpt);
 834                 }
 835
 836                 if (fcu->rna_path) {
 837                         writedata(wd, DATA, strlen(fcu->rna_path) + 1, fcu->rna_path);
 838                 }
 839
 840                 /* driver data */
 841                 if (fcu->driver) {
 842                         ChannelDriver *driver = fcu->driver;
 843                         DriverVar *dvar;
 844
 845                         writestruct(wd, DATA, ChannelDriver, 1, driver);
 846
 847                         /* variables */
 848                         writelist(wd, DATA, DriverVar, &driver->variables);
 849                         for (dvar = driver->variables.first; dvar; dvar = dvar->next) {
 850                                 DRIVER_TARGETS_USED_LOOPER(dvar)
 851                                 {
 852                                         if (dtar->rna_path) {
 853                                                 writedata(wd, DATA, strlen(dtar->rna_path) + 1, dtar->rna_path);
 854                                         }
 855                                 }
 856                                 DRIVER_TARGETS_LOOPER_END
 857                         }
 858                 }
 859
 860                 /* write F-Modifiers */
 861                 write_fmodifiers(wd, &fcu->modifiers);
 862         }
 863 }
 864
 865 static void write_action(WriteData *wd, bAction *act)
 866 {
 867         if (act->id.us > 0 || wd->use_memfile) {
 868                 writestruct(wd, ID_AC, bAction, 1, act);
 869                 write_iddata(wd, &act->id);
 870
 871                 write_fcurves(wd, &act->curves);
 872
 873                 for (bActionGroup *grp = act->groups.first; grp; grp = grp->next) {
 874                         writestruct(wd, DATA, bActionGroup, 1, grp);
 875                 }
 876
 877                 for (TimeMarker *marker = act->markers.first; marker; marker = marker->next) {
 878                         writestruct(wd, DATA, TimeMarker, 1, marker);
 879                 }
 880         }
 881 }
 882
 883 static void write_keyingsets(WriteData *wd, ListBase *list)
 884 {
 885         KeyingSet *ks;
 886         KS_Path *ksp;
 887
 888         for (ks = list->first; ks; ks = ks->next) {
 889                 /* KeyingSet */
 890                 writestruct(wd, DATA, KeyingSet, 1, ks);
 891
 892                 /* Paths */
 893                 for (ksp = ks->paths.first; ksp; ksp = ksp->next) {
 894                         /* Path */
 895                         writestruct(wd, DATA, KS_Path, 1, ksp);
 896
 897                         if (ksp->rna_path) {
 898                                 writedata(wd, DATA, strlen(ksp->rna_path) + 1, ksp->rna_path);
 899                         }
 900                 }
 901         }
 902 }
 903
 904 static void write_nlastrips(WriteData *wd, ListBase *strips)
 905 {
 906         NlaStrip *strip;
 907
 908         writelist(wd, DATA, NlaStrip, strips);
 909         for (strip = strips->first; strip; strip = strip->next) {
 910                 /* write the strip's F-Curves and modifiers */
 911                 write_fcurves(wd, &strip->fcurves);
 912                 write_fmodifiers(wd, &strip->modifiers);
 913
 914                 /* write the strip's children */
 915                 write_nlastrips(wd, &strip->strips);
 916         }
 917 }
 918
 919 static void write_nladata(WriteData *wd, ListBase *nlabase)
 920 {
 921         NlaTrack *nlt;
 922
 923         /* write all the tracks */
 924         for (nlt = nlabase->first; nlt; nlt = nlt->next) {
 925                 /* write the track first */
 926                 writestruct(wd, DATA, NlaTrack, 1, nlt);
 927
 928                 /* write the track's strips */
 929                 write_nlastrips(wd, &nlt->strips);
 930         }
 931 }
 932
 933 static void write_animdata(WriteData *wd, AnimData *adt)
 934 {
 935         AnimOverride *aor;
 936
 937         /* firstly, just write the AnimData block */
 938         writestruct(wd, DATA, AnimData, 1, adt);
 939
 940         /* write drivers */
 941         write_fcurves(wd, &adt->drivers);
 942
 943         /* write overrides */
 944         // FIXME: are these needed?
 945         for (aor = adt->overrides.first; aor; aor = aor->next) {
 946                 /* overrides consist of base data + rna_path */
 947                 writestruct(wd, DATA, AnimOverride, 1, aor);
 948                 writedata(wd, DATA, strlen(aor->rna_path) + 1, aor->rna_path);
 949         }
 950
 951         // TODO write the remaps (if they are needed)
 952
 953         /* write NLA data */
 954         write_nladata(wd, &adt->nla_tracks);
 955 }
 956
 957 static void write_curvemapping_curves(WriteData *wd, CurveMapping *cumap)
 958 {
 959         for (int a = 0; a < CM_TOT; a++) {
 960                 writestruct(wd, DATA, CurveMapPoint, cumap->cm[a].totpoint, cumap->cm[a].curve);
 961         }
 962 }
 963
 964 static void write_curvemapping(WriteData *wd, CurveMapping *cumap)
 965 {
 966         writestruct(wd, DATA, CurveMapping, 1, cumap);
 967
 968         write_curvemapping_curves(wd, cumap);
 969 }
 970
 971 static void write_node_socket(WriteData *wd, bNodeTree *UNUSED(ntree), bNode *node, bNodeSocket *sock)
 972 {
 973 #ifdef USE_NODE_COMPAT_CUSTOMNODES
 974         /* forward compatibility code, so older blenders still open (not for undo) */
 975         if (wd->use_memfile == false) {
 976                 sock->stack_type = 1;
 977
 978                 if (node->type == NODE_GROUP) {
 979                         bNodeTree *ngroup = (bNodeTree *)node->id;
 980                         if (ngroup) {
 981                                 /* for node groups: look up the deprecated groupsock pointer */
 982                                 sock->groupsock = ntreeFindSocketInterface(ngroup, sock->in_out, sock->identifier);
 983                                 BLI_assert(sock->groupsock != NULL);
 984
 985                                 /* node group sockets now use the generic identifier string to verify group nodes,
 986                                  * old blender uses the own_index.
 987                                  */
 988                                 sock->own_index = sock->groupsock->own_index;
 989                         }
 990                 }
 991         }
 992 #endif
 993
 994         /* actual socket writing */
 995         writestruct(wd, DATA, bNodeSocket, 1, sock);
 996
 997         if (sock->prop) {
 998                 IDP_WriteProperty(sock->prop, wd);
 999         }
1000
1001         if (sock->default_value) {
1002                 writedata(wd, DATA, MEM_allocN_len(sock->default_value), sock->default_value);
1003         }
1004 }
1005 static void write_node_socket_interface(WriteData *wd, bNodeTree *UNUSED(ntree), bNodeSocket *sock)
1006 {
1007 #ifdef USE_NODE_COMPAT_CUSTOMNODES
1008         /* forward compatibility code, so older blenders still open */
1009         sock->stack_type = 1;
1010
1011         /* Reconstruct the deprecated default_value structs in socket interface DNA. */
1012         if (sock->default_value == NULL && sock->typeinfo) {
1013                 node_socket_init_default_value(sock);
1014         }
1015 #endif
1016
1017         /* actual socket writing */
1018         writestruct(wd, DATA, bNodeSocket, 1, sock);
1019
1020         if (sock->prop) {
1021                 IDP_WriteProperty(sock->prop, wd);
1022         }
1023
1024         if (sock->default_value) {
1025                 writedata(wd, DATA, MEM_allocN_len(sock->default_value), sock->default_value);
1026         }
1027 }
1028 /* this is only direct data, tree itself should have been written */
1029 static void write_nodetree_nolib(WriteData *wd, bNodeTree *ntree)
1030 {
1031         bNode *node;
1032         bNodeSocket *sock;
1033         bNodeLink *link;
1034
1035         /* for link_list() speed, we write per list */
1036
1037         if (ntree->adt) {
1038                 write_animdata(wd, ntree->adt);
1039         }
1040
1041         for (node = ntree->nodes.first; node; node = node->next) {
1042                 writestruct(wd, DATA, bNode, 1, node);
1043
1044                 if (node->prop) {
1045                         IDP_WriteProperty(node->prop, wd);
1046                 }
1047
1048                 for (sock = node->inputs.first; sock; sock = sock->next) {
1049                         write_node_socket(wd, ntree, node, sock);
1050                 }
1051                 for (sock = node->outputs.first; sock; sock = sock->next) {
1052                         write_node_socket(wd, ntree, node, sock);
1053                 }
1054
1055                 for (link = node->internal_links.first; link; link = link->next) {
1056                         writestruct(wd, DATA, bNodeLink, 1, link);
1057                 }
1058
1059                 if (node->storage) {
1060                         /* could be handlerized at some point, now only 1 exception still */
1061                         if ((ntree->type == NTREE_SHADER) &&
1062                             ELEM(node->type, SH_NODE_CURVE_VEC, SH_NODE_CURVE_RGB))
1063                         {
1064                                 write_curvemapping(wd, node->storage);
1065                         }
1066                         else if (ntree->type == NTREE_SHADER &&
1067                                  (node->type == SH_NODE_SCRIPT))
1068                         {
1069                                 NodeShaderScript *nss = (NodeShaderScript *)node->storage;
1070                                 if (nss->bytecode) {
1071                                         writedata(wd, DATA, strlen(nss->bytecode) + 1, nss->bytecode);
1072                                 }
1073                                 writestruct_id(wd, DATA, node->typeinfo->storagename, 1, node->storage);
1074                         }
1075                         else if ((ntree->type == NTREE_COMPOSIT) &&
1076                                  ELEM(node->type, CMP_NODE_TIME, CMP_NODE_CURVE_VEC, CMP_NODE_CURVE_RGB, CMP_NODE_HUECORRECT))
1077                         {
1078                                 write_curvemapping(wd, node->storage);
1079                         }
1080                         else if ((ntree->type == NTREE_TEXTURE) &&
1081                                  (node->type == TEX_NODE_CURVE_RGB || node->type == TEX_NODE_CURVE_TIME))
1082                         {
1083                                 write_curvemapping(wd, node->storage);
1084                         }
1085                         else if ((ntree->type == NTREE_COMPOSIT) &&
1086                                  (node->type == CMP_NODE_MOVIEDISTORTION))
1087                         {
1088                                 /* pass */
1089                         }
1090                         else if ((ntree->type == NTREE_COMPOSIT) && (node->type == CMP_NODE_GLARE)) {
1091                                 /* Simple forward compat for fix for T50736.
1092                                  * Not ideal (there is no ideal solution here), but should do for now. */
1093                                 NodeGlare *ndg = node->storage;
1094                                 /* Not in undo case. */
1095                                 if (wd->use_memfile == false) {
1096                                         switch (ndg->type) {
1097                                                 case 2:  /* Grrrr! magic numbers :( */
1098                                                         ndg->angle = ndg->streaks;
1099                                                         break;
1100                                                 case 0:
1101                                                         ndg->angle = ndg->star_45;
1102                                                         break;
1103                                                 default:
1104                                                         break;
1105                                         }
1106                                 }
1107                                 writestruct_id(wd, DATA, node->typeinfo->storagename, 1, node->storage);
1108                         }
1109                         else {
1110                                 writestruct_id(wd, DATA, node->typeinfo->storagename, 1, node->storage);
1111                         }
1112                 }
1113
1114                 if (node->type == CMP_NODE_OUTPUT_FILE) {
1115                         /* inputs have own storage data */
1116                         for (sock = node->inputs.first; sock; sock = sock->next) {
1117                                 writestruct(wd, DATA, NodeImageMultiFileSocket, 1, sock->storage);
1118                         }
1119                 }
1120                 if (ELEM(node->type, CMP_NODE_IMAGE, CMP_NODE_R_LAYERS)) {
1121                         /* write extra socket info */
1122                         for (sock = node->outputs.first; sock; sock = sock->next) {
1123                                 writestruct(wd, DATA, NodeImageLayer, 1, sock->storage);
1124                         }
1125                 }
1126         }
1127
1128         for (link = ntree->links.first; link; link = link->next) {
1129                 writestruct(wd, DATA, bNodeLink, 1, link);
1130         }
1131
1132         for (sock = ntree->inputs.first; sock; sock = sock->next) {
1133                 write_node_socket_interface(wd, ntree, sock);
1134         }
1135         for (sock = ntree->outputs.first; sock; sock = sock->next) {
1136                 write_node_socket_interface(wd, ntree, sock);
1137         }
1138 }
1139
1140 /**
1141  * Take care using 'use_active_win', since we wont want the currently active window
1142  * to change which scene renders (currently only used for undo).
1143  */
1144 static void current_screen_compat(
1145         Main *mainvar, bool use_active_win,
1146         bScreen **r_screen, Scene **r_scene, ViewLayer **r_render_layer)
1147 {
1148         wmWindowManager *wm;
1149         wmWindow *window = NULL;
1150         WorkSpace *workspace;
1151
1152         /* find a global current screen in the first open window, to have
1153          * a reasonable default for reading in older versions */
1154         wm = mainvar->wm.first;
1155
1156         if (wm) {
1157                 if (use_active_win) {
1158                         /* write the active window into the file, needed for multi-window undo T43424 */
1159                         for (window = wm->windows.first; window; window = window->next) {
1160                                 if (window->active) {
1161                                         break;
1162                                 }
1163                         }
1164
1165                         /* fallback */
1166                         if (window == NULL) {
1167                                 window = wm->windows.first;
1168                         }
1169                 }
1170                 else {
1171                         window = wm->windows.first;
1172                 }
1173         }
1174         workspace = (window) ? BKE_workspace_active_get(window->workspace_hook) : NULL;
1175
1176         *r_screen = (window) ? BKE_workspace_active_screen_get(window->workspace_hook) : NULL;
1177         *r_scene = (window) ? window->scene : NULL;
1178         *r_render_layer = (window) ? BKE_workspace_view_layer_get(workspace, *r_scene) : NULL;
1179 }
1180
1181 typedef struct RenderInfo {
1182         int sfra;
1183         int efra;
1184         char scene_name[MAX_ID_NAME - 2];
1185 } RenderInfo;
1186
1187 /* was for historic render-deamon feature,
1188  * now write because it can be easily extracted without
1189  * reading the whole blend file */
1190 static void write_renderinfo(WriteData *wd, Main *mainvar)
1191 {
1192         bScreen *curscreen;
1193         Scene *sce, *curscene = NULL;
1194         ViewLayer *render_layer;
1195         RenderInfo data;
1196
1197         /* XXX in future, handle multiple windows with multiple screens? */
1198         current_screen_compat(mainvar, false, &curscreen, &curscene, &render_layer);
1199
1200         for (sce = mainvar->scene.first; sce; sce = sce->id.next) {
1201                 if (sce->id.lib == NULL && (sce == curscene || (sce->r.scemode & R_BG_RENDER))) {
1202                         data.sfra = sce->r.sfra;
1203                         data.efra = sce->r.efra;
1204                         memset(data.scene_name, 0, sizeof(data.scene_name));
1205
1206                         BLI_strncpy(data.scene_name, sce->id.name + 2, sizeof(data.scene_name));
1207
1208                         writedata(wd, REND, sizeof(data), &data);
1209                 }
1210         }
1211 }
1212
1213 static void write_keymapitem(WriteData *wd, const wmKeyMapItem *kmi)
1214 {
1215         writestruct(wd, DATA, wmKeyMapItem, 1, kmi);
1216         if (kmi->properties) {
1217                 IDP_WriteProperty(kmi->properties, wd);
1218         }
1219 }
1220
1221 static void write_userdef(WriteData *wd, const UserDef *userdef)
1222 {
1223         writestruct(wd, USER, UserDef, 1, userdef);
1224
1225         for (const bTheme *btheme = userdef->themes.first; btheme; btheme = btheme->next) {
1226                 writestruct(wd, DATA, bTheme, 1, btheme);
1227         }
1228
1229         for (const wmKeyMap *keymap = userdef->user_keymaps.first; keymap; keymap = keymap->next) {
1230                 writestruct(wd, DATA, wmKeyMap, 1, keymap);
1231
1232                 for (const wmKeyMapDiffItem *kmdi = keymap->diff_items.first; kmdi; kmdi = kmdi->next) {
1233                         writestruct(wd, DATA, wmKeyMapDiffItem, 1, kmdi);
1234                         if (kmdi->remove_item) {
1235                                 write_keymapitem(wd, kmdi->remove_item);
1236                         }
1237                         if (kmdi->add_item) {
1238                                 write_keymapitem(wd, kmdi->add_item);
1239                         }
1240                 }
1241
1242                 for (const wmKeyMapItem *kmi = keymap->items.first; kmi; kmi = kmi->next) {
1243                         write_keymapitem(wd, kmi);
1244                 }
1245         }
1246
1247         for (const bAddon *bext = userdef->addons.first; bext; bext = bext->next) {
1248                 writestruct(wd, DATA, bAddon, 1, bext);
1249                 if (bext->prop) {
1250                         IDP_WriteProperty(bext->prop, wd);
1251                 }
1252         }
1253
1254         for (const bPathCompare *path_cmp = userdef->autoexec_paths.first; path_cmp; path_cmp = path_cmp->next) {
1255                 writestruct(wd, DATA, bPathCompare, 1, path_cmp);
1256         }
1257
1258         for (const uiStyle *style = userdef->uistyles.first; style; style = style->next) {
1259                 writestruct(wd, DATA, uiStyle, 1, style);
1260         }
1261 }
1262
1263 static void write_boid_state(WriteData *wd, BoidState *state)
1264 {
1265         BoidRule *rule = state->rules.first;
1266
1267         writestruct(wd, DATA, BoidState, 1, state);
1268
1269         for (; rule; rule = rule->next) {
1270                 switch (rule->type) {
1271                         case eBoidRuleType_Goal:
1272                         case eBoidRuleType_Avoid:
1273                                 writestruct(wd, DATA, BoidRuleGoalAvoid, 1, rule);
1274                                 break;
1275                         case eBoidRuleType_AvoidCollision:
1276                                 writestruct(wd, DATA, BoidRuleAvoidCollision, 1, rule);
1277                                 break;
1278                         case eBoidRuleType_FollowLeader:
1279                                 writestruct(wd, DATA, BoidRuleFollowLeader, 1, rule);
1280                                 break;
1281                         case eBoidRuleType_AverageSpeed:
1282                                 writestruct(wd, DATA, BoidRuleAverageSpeed, 1, rule);
1283                                 break;
1284                         case eBoidRuleType_Fight:
1285                                 writestruct(wd, DATA, BoidRuleFight, 1, rule);
1286                                 break;
1287                         default:
1288                                 writestruct(wd, DATA, BoidRule, 1, rule);
1289                                 break;
1290                 }
1291         }
1292 #if 0
1293         BoidCondition *cond = state->conditions.first;
1294         for (; cond; cond = cond->next) {
1295                 writestruct(wd, DATA, BoidCondition, 1, cond);
1296         }
1297 #endif
1298 }
1299
1300 /* update this also to readfile.c */
1301 static const char *ptcache_data_struct[] = {
1302         "", // BPHYS_DATA_INDEX
1303         "", // BPHYS_DATA_LOCATION
1304         "", // BPHYS_DATA_VELOCITY
1305         "", // BPHYS_DATA_ROTATION
1306         "", // BPHYS_DATA_AVELOCITY / BPHYS_DATA_XCONST */
1307         "", // BPHYS_DATA_SIZE:
1308         "", // BPHYS_DATA_TIMES:
1309         "BoidData" // case BPHYS_DATA_BOIDS:
1310 };
1311 static const char *ptcache_extra_struct[] = {
1312         "",
1313         "ParticleSpring"
1314 };
1315 static void write_pointcaches(WriteData *wd, ListBase *ptcaches)
1316 {
1317         PointCache *cache = ptcaches->first;
1318         int i;
1319
1320         for (; cache; cache = cache->next) {
1321                 writestruct(wd, DATA, PointCache, 1, cache);
1322
1323                 if ((cache->flag & PTCACHE_DISK_CACHE) == 0) {
1324                         PTCacheMem *pm = cache->mem_cache.first;
1325
1326                         for (; pm; pm = pm->next) {
1327                                 PTCacheExtra *extra = pm->extradata.first;
1328
1329                                 writestruct(wd, DATA, PTCacheMem, 1, pm);
1330
1331                                 for (i = 0; i < BPHYS_TOT_DATA; i++) {
1332                                         if (pm->data[i] && pm->data_types & (1 << i)) {
1333                                                 if (ptcache_data_struct[i][0] == '\0') {
1334                                                         writedata(wd, DATA, MEM_allocN_len(pm->data[i]), pm->data[i]);
1335                                                 }
1336                                                 else {
1337                                                         writestruct_id(wd, DATA, ptcache_data_struct[i], pm->totpoint, pm->data[i]);
1338                                                 }
1339                                         }
1340                                 }
1341
1342                                 for (; extra; extra = extra->next) {
1343                                         if (ptcache_extra_struct[extra->type][0] == '\0') {
1344                                                 continue;
1345                                         }
1346                                         writestruct(wd, DATA, PTCacheExtra, 1, extra);
1347                                         writestruct_id(wd, DATA, ptcache_extra_struct[extra->type], extra->totdata, extra->data);
1348                                 }
1349                         }
1350                 }
1351         }
1352 }
1353
1354 static void write_particlesettings(WriteData *wd, ParticleSettings *part)
1355 {
1356         if (part->id.us > 0 || wd->use_memfile) {
1357                 /* write LibData */
1358                 writestruct(wd, ID_PA, ParticleSettings, 1, part);
1359                 write_iddata(wd, &part->id);
1360
1361                 if (part->adt) {
1362                         write_animdata(wd, part->adt);
1363                 }
1364                 writestruct(wd, DATA, PartDeflect, 1, part->pd);
1365                 writestruct(wd, DATA, PartDeflect, 1, part->pd2);
1366                 writestruct(wd, DATA, EffectorWeights, 1, part->effector_weights);
1367
1368                 if (part->clumpcurve) {
1369                         write_curvemapping(wd, part->clumpcurve);
1370                 }
1371                 if (part->roughcurve) {
1372                         write_curvemapping(wd, part->roughcurve);
1373                 }
1374                 if (part->twistcurve) {
1375                         write_curvemapping(wd, part->twistcurve);
1376                 }
1377
1378                 for (ParticleDupliWeight *dw = part->dupliweights.first; dw; dw = dw->next) {
1379                         /* update indices, but only if dw->ob is set (can be NULL after loading e.g.) */
1380                         if (dw->ob != NULL) {
1381                                 dw->index = 0;
1382                                 if (part->dup_group) { /* can be NULL if lining fails or set to None */
1383                                         FOREACH_GROUP_OBJECT_BEGIN(part->dup_group, object)
1384                                         {
1385                                                 if (object != dw->ob) {
1386                                                         dw->index++;
1387                                                 }
1388                                         }
1389                                         FOREACH_GROUP_OBJECT_END;
1390                                 }
1391                         }
1392                         writestruct(wd, DATA, ParticleDupliWeight, 1, dw);
1393                 }
1394
1395                 if (part->boids && part->phystype == PART_PHYS_BOIDS) {
1396                         writestruct(wd, DATA, BoidSettings, 1, part->boids);
1397
1398                         for (BoidState *state = part->boids->states.first; state; state = state->next) {
1399                                 write_boid_state(wd, state);
1400                         }
1401                 }
1402                 if (part->fluid && part->phystype == PART_PHYS_FLUID) {
1403                         writestruct(wd, DATA, SPHFluidSettings, 1, part->fluid);
1404                 }
1405
1406                 for (int a = 0; a < MAX_MTEX; a++) {
1407                         if (part->mtex[a]) {
1408                                 writestruct(wd, DATA, MTex, 1, part->mtex[a]);
1409                         }
1410                 }
1411         }
1412 }
1413
1414 static void write_particlesystems(WriteData *wd, ListBase *particles)
1415 {
1416         ParticleSystem *psys = particles->first;
1417         ParticleTarget *pt;
1418         int a;
1419
1420         for (; psys; psys = psys->next) {
1421                 writestruct(wd, DATA, ParticleSystem, 1, psys);
1422
1423                 if (psys->particles) {
1424                         writestruct(wd, DATA, ParticleData, psys->totpart, psys->particles);
1425
1426                         if (psys->particles->hair) {
1427                                 ParticleData *pa = psys->particles;
1428
1429                                 for (a = 0; a < psys->totpart; a++, pa++) {
1430                                         writestruct(wd, DATA, HairKey, pa->totkey, pa->hair);
1431                                 }
1432                         }
1433
1434                         if (psys->particles->boid &&
1435                             (psys->part->phystype == PART_PHYS_BOIDS))
1436                         {
1437                                 writestruct(wd, DATA, BoidParticle, psys->totpart, psys->particles->boid);
1438                         }
1439
1440                         if (psys->part->fluid &&
1441                             (psys->part->phystype == PART_PHYS_FLUID) &&
1442                             (psys->part->fluid->flag & SPH_VISCOELASTIC_SPRINGS))
1443                         {
1444                                 writestruct(wd, DATA, ParticleSpring, psys->tot_fluidsprings, psys->fluid_springs);
1445                         }
1446                 }
1447                 pt = psys->targets.first;
1448                 for (; pt; pt = pt->next) {
1449                         writestruct(wd, DATA, ParticleTarget, 1, pt);
1450                 }
1451
1452                 if (psys->child) {
1453                         writestruct(wd, DATA, ChildParticle, psys->totchild, psys->child);
1454                 }
1455
1456                 if (psys->clmd) {
1457                         writestruct(wd, DATA, ClothModifierData, 1, psys->clmd);
1458                         writestruct(wd, DATA, ClothSimSettings, 1, psys->clmd->sim_parms);
1459                         writestruct(wd, DATA, ClothCollSettings, 1, psys->clmd->coll_parms);
1460                 }
1461
1462                 write_pointcaches(wd, &psys->ptcaches);
1463         }
1464 }
1465
1466 static void write_motionpath(WriteData *wd, bMotionPath *mpath)
1467 {
1468         /* sanity checks */
1469         if (mpath == NULL) {
1470                 return;
1471         }
1472
1473         /* firstly, just write the motionpath struct */
1474         writestruct(wd, DATA, bMotionPath, 1, mpath);
1475
1476         /* now write the array of data */
1477         writestruct(wd, DATA, bMotionPathVert, mpath->length, mpath->points);
1478 }
1479
1480 static void write_constraints(WriteData *wd, ListBase *conlist)
1481 {
1482         bConstraint *con;
1483
1484         for (con = conlist->first; con; con = con->next) {
1485                 const bConstraintTypeInfo *cti = BKE_constraint_typeinfo_get(con);
1486
1487                 /* Write the specific data */
1488                 if (cti && con->data) {
1489                         /* firstly, just write the plain con->data struct */
1490                         writestruct_id(wd, DATA, cti->structName, 1, con->data);
1491
1492                         /* do any constraint specific stuff */
1493                         switch (con->type) {
1494                                 case CONSTRAINT_TYPE_PYTHON:
1495                                 {
1496                                         bPythonConstraint *data = con->data;
1497                                         bConstraintTarget *ct;
1498
1499                                         /* write targets */
1500                                         for (ct = data->targets.first; ct; ct = ct->next) {
1501                                                 writestruct(wd, DATA, bConstraintTarget, 1, ct);
1502                                         }
1503
1504                                         /* Write ID Properties -- and copy this comment EXACTLY for easy finding
1505                                          * of library blocks that implement this.*/
1506                                         IDP_WriteProperty(data->prop, wd);
1507
1508                                         break;
1509                                 }
1510                                 case CONSTRAINT_TYPE_SPLINEIK:
1511                                 {
1512                                         bSplineIKConstraint *data = con->data;
1513
1514                                         /* write points array */
1515                                         writedata(wd, DATA, sizeof(float) * (data->numpoints), data->points);
1516
1517                                         break;
1518                                 }
1519                         }
1520                 }
1521
1522                 /* Write the constraint */
1523                 writestruct(wd, DATA, bConstraint, 1, con);
1524         }
1525 }
1526
1527 static void write_pose(WriteData *wd, bPose *pose)
1528 {
1529         bPoseChannel *chan;
1530         bActionGroup *grp;
1531
1532         /* Write each channel */
1533         if (pose == NULL) {
1534                 return;
1535         }
1536
1537         /* Write channels */
1538         for (chan = pose->chanbase.first; chan; chan = chan->next) {
1539                 /* Write ID Properties -- and copy this comment EXACTLY for easy finding
1540                  * of library blocks that implement this.*/
1541                 if (chan->prop) {
1542                         IDP_WriteProperty(chan->prop, wd);
1543                 }
1544
1545                 write_constraints(wd, &chan->constraints);
1546
1547                 write_motionpath(wd, chan->mpath);
1548
1549                 /* prevent crashes with autosave,
1550                  * when a bone duplicated in editmode has not yet been assigned to its posechannel */
1551                 if (chan->bone) {
1552                         /* gets restored on read, for library armatures */
1553                         chan->selectflag = chan->bone->flag & BONE_SELECTED;
1554                 }
1555
1556                 writestruct(wd, DATA, bPoseChannel, 1, chan);
1557         }
1558
1559         /* Write groups */
1560         for (grp = pose->agroups.first; grp; grp = grp->next) {
1561                 writestruct(wd, DATA, bActionGroup, 1, grp);
1562         }
1563
1564         /* write IK param */
1565         if (pose->ikparam) {
1566                 const char *structname = BKE_pose_ikparam_get_name(pose);
1567                 if (structname) {
1568                         writestruct_id(wd, DATA, structname, 1, pose->ikparam);
1569                 }
1570         }
1571
1572         /* Write this pose */
1573         writestruct(wd, DATA, bPose, 1, pose);
1574
1575 }
1576
1577 static void write_defgroups(WriteData *wd, ListBase *defbase)
1578 {
1579         for (bDeformGroup *defgroup = defbase->first; defgroup; defgroup = defgroup->next) {
1580                 writestruct(wd, DATA, bDeformGroup, 1, defgroup);
1581         }
1582 }
1583
1584 static void write_fmaps(WriteData *wd, ListBase *fbase)
1585 {
1586         for (bFaceMap *fmap = fbase->first; fmap; fmap = fmap->next) {
1587                 writestruct(wd, DATA, bFaceMap, 1, fmap);
1588         }
1589 }
1590
1591 static void write_modifiers(WriteData *wd, ListBase *modbase)
1592 {
1593         ModifierData *md;
1594
1595         if (modbase == NULL) {
1596                 return;
1597         }
1598
1599         for (md = modbase->first; md; md = md->next) {
1600                 const ModifierTypeInfo *mti = modifierType_getInfo(md->type);
1601                 if (mti == NULL) {
1602                         return;
1603                 }
1604
1605                 writestruct_id(wd, DATA, mti->structName, 1, md);
1606
1607                 if (md->type == eModifierType_Hook) {
1608                         HookModifierData *hmd = (HookModifierData *)md;
1609
1610                         if (hmd->curfalloff) {
1611                                 write_curvemapping(wd, hmd->curfalloff);
1612                         }
1613
1614                         writedata(wd, DATA, sizeof(int) * hmd->totindex, hmd->indexar);
1615                 }
1616                 else if (md->type == eModifierType_Cloth) {
1617                         ClothModifierData *clmd = (ClothModifierData *)md;
1618
1619                         writestruct(wd, DATA, ClothSimSettings, 1, clmd->sim_parms);
1620                         writestruct(wd, DATA, ClothCollSettings, 1, clmd->coll_parms);
1621                         writestruct(wd, DATA, EffectorWeights, 1, clmd->sim_parms->effector_weights);
1622                         write_pointcaches(wd, &clmd->ptcaches);
1623                 }
1624                 else if (md->type == eModifierType_Smoke) {
1625                         SmokeModifierData *smd = (SmokeModifierData *)md;
1626
1627                         if (smd->type & MOD_SMOKE_TYPE_DOMAIN) {
1628                                 writestruct(wd, DATA, SmokeDomainSettings, 1, smd->domain);
1629
1630                                 if (smd->domain) {
1631                                         write_pointcaches(wd, &(smd->domain->ptcaches[0]));
1632
1633                                         /* create fake pointcache so that old blender versions can read it */
1634                                         smd->domain->point_cache[1] = BKE_ptcache_add(&smd->domain->ptcaches[1]);
1635                                         smd->domain->point_cache[1]->flag |= PTCACHE_DISK_CACHE | PTCACHE_FAKE_SMOKE;
1636                                         smd->domain->point_cache[1]->step = 1;
1637
1638                                         write_pointcaches(wd, &(smd->domain->ptcaches[1]));
1639
1640                                         if (smd->domain->coba) {
1641                                                 writestruct(wd, DATA, ColorBand, 1, smd->domain->coba);
1642                                         }
1643
1644
1645                                         /* cleanup the fake pointcache */
1646                                         BKE_ptcache_free_list(&smd->domain->ptcaches[1]);
1647                                         smd->domain->point_cache[1] = NULL;
1648
1649                                         writestruct(wd, DATA, EffectorWeights, 1, smd->domain->effector_weights);
1650                                 }
1651                         }
1652                         else if (smd->type & MOD_SMOKE_TYPE_FLOW) {
1653                                 writestruct(wd, DATA, SmokeFlowSettings, 1, smd->flow);
1654                         }
1655                         else if (smd->type & MOD_SMOKE_TYPE_COLL) {
1656                                 writestruct(wd, DATA, SmokeCollSettings, 1, smd->coll);
1657                         }
1658                 }
1659                 else if (md->type == eModifierType_Fluidsim) {
1660                         FluidsimModifierData *fluidmd = (FluidsimModifierData *)md;
1661
1662                         writestruct(wd, DATA, FluidsimSettings, 1, fluidmd->fss);
1663                 }
1664                 else if (md->type == eModifierType_DynamicPaint) {
1665                         DynamicPaintModifierData *pmd = (DynamicPaintModifierData *)md;
1666
1667                         if (pmd->canvas) {
1668                                 DynamicPaintSurface *surface;
1669                                 writestruct(wd, DATA, DynamicPaintCanvasSettings, 1, pmd->canvas);
1670
1671                                 /* write surfaces */
1672                                 for (surface = pmd->canvas->surfaces.first; surface; surface = surface->next) {
1673                                         writestruct(wd, DATA, DynamicPaintSurface, 1, surface);
1674                                 }
1675                                 /* write caches and effector weights */
1676                                 for (surface = pmd->canvas->surfaces.first; surface; surface = surface->next) {
1677                                         write_pointcaches(wd, &(surface->ptcaches));
1678
1679                                         writestruct(wd, DATA, EffectorWeights, 1, surface->effector_weights);
1680                                 }
1681                         }
1682                         if (pmd->brush) {
1683                                 writestruct(wd, DATA, DynamicPaintBrushSettings, 1, pmd->brush);
1684                                 writestruct(wd, DATA, ColorBand, 1, pmd->brush->paint_ramp);
1685                                 writestruct(wd, DATA, ColorBand, 1, pmd->brush->vel_ramp);
1686                         }
1687                 }
1688                 else if (md->type == eModifierType_Collision) {
1689
1690 #if 0
1691                         CollisionModifierData *collmd = (CollisionModifierData *)md;
1692                         // TODO: CollisionModifier should use pointcache
1693                         // + have proper reset events before enabling this
1694                         writestruct(wd, DATA, MVert, collmd->numverts, collmd->x);
1695                         writestruct(wd, DATA, MVert, collmd->numverts, collmd->xnew);
1696                         writestruct(wd, DATA, MFace, collmd->numfaces, collmd->mfaces);
1697 #endif
1698                 }
1699                 else if (md->type == eModifierType_MeshDeform) {
1700                         MeshDeformModifierData *mmd = (MeshDeformModifierData *)md;
1701                         int size = mmd->dyngridsize;
1702
1703                         writestruct(wd, DATA, MDefInfluence, mmd->totinfluence, mmd->bindinfluences);
1704                         writedata(wd, DATA, sizeof(int) * (mmd->totvert + 1), mmd->bindoffsets);
1705                         writedata(wd, DATA, sizeof(float) * 3 * mmd->totcagevert,
1706                                   mmd->bindcagecos);
1707                         writestruct(wd, DATA, MDefCell, size * size * size, mmd->dyngrid);
1708                         writestruct(wd, DATA, MDefInfluence, mmd->totinfluence, mmd->dyninfluences);
1709                         writedata(wd, DATA, sizeof(int) * mmd->totvert, mmd->dynverts);
1710                 }
1711                 else if (md->type == eModifierType_Warp) {
1712                         WarpModifierData *tmd = (WarpModifierData *)md;
1713                         if (tmd->curfalloff) {
1714                                 write_curvemapping(wd, tmd->curfalloff);
1715                         }
1716                 }
1717                 else if (md->type == eModifierType_WeightVGEdit) {
1718                         WeightVGEditModifierData *wmd = (WeightVGEditModifierData *)md;
1719
1720                         if (wmd->cmap_curve) {
1721                                 write_curvemapping(wd, wmd->cmap_curve);
1722                         }
1723                 }
1724                 else if (md->type == eModifierType_LaplacianDeform) {
1725                         LaplacianDeformModifierData *lmd = (LaplacianDeformModifierData *)md;
1726
1727                         writedata(wd, DATA, sizeof(float) * lmd->total_verts * 3, lmd->vertexco);
1728                 }
1729                 else if (md->type == eModifierType_CorrectiveSmooth) {
1730                         CorrectiveSmoothModifierData *csmd = (CorrectiveSmoothModifierData *)md;
1731
1732                         if (csmd->bind_coords) {
1733                                 writedata(wd, DATA, sizeof(float[3]) * csmd->bind_coords_num, csmd->bind_coords);
1734                         }
1735                 }
1736                 else if (md->type == eModifierType_SurfaceDeform) {
1737                         SurfaceDeformModifierData *smd = (SurfaceDeformModifierData *)md;
1738
1739                         writestruct(wd, DATA, SDefVert, smd->numverts, smd->verts);
1740
1741                         if (smd->verts) {
1742                                 for (int i = 0; i < smd->numverts; i++) {
1743                                         writestruct(wd, DATA, SDefBind, smd->verts[i].numbinds, smd->verts[i].binds);
1744
1745                                         if (smd->verts[i].binds) {
1746                                                 for (int j = 0; j < smd->verts[i].numbinds; j++) {
1747                                                         writedata(wd, DATA, sizeof(int) * smd->verts[i].binds[j].numverts, smd->verts[i].binds[j].vert_inds);
1748
1749                                                         if (smd->verts[i].binds[j].mode == MOD_SDEF_MODE_CENTROID ||
1750                                                             smd->verts[i].binds[j].mode == MOD_SDEF_MODE_LOOPTRI)
1751                                                         {
1752                                                                 writedata(wd, DATA, sizeof(float) * 3, smd->verts[i].binds[j].vert_weights);
1753                                                         }
1754                                                         else {
1755                                                                 writedata(wd, DATA, sizeof(float) * smd->verts[i].binds[j].numverts, smd->verts[i].binds[j].vert_weights);
1756                                                         }
1757                                                 }
1758                                         }
1759                                 }
1760                         }
1761                 }
1762         }
1763 }
1764
1765 static void write_object(WriteData *wd, Object *ob)
1766 {
1767         if (ob->id.us > 0 || wd->use_memfile) {
1768                 /* write LibData */
1769                 writestruct(wd, ID_OB, Object, 1, ob);
1770                 write_iddata(wd, &ob->id);
1771
1772                 if (ob->adt) {
1773                         write_animdata(wd, ob->adt);
1774                 }
1775
1776                 /* direct data */
1777                 writedata(wd, DATA, sizeof(void *) * ob->totcol, ob->mat);
1778                 writedata(wd, DATA, sizeof(char) * ob->totcol, ob->matbits);
1779                 /* write_effects(wd, &ob->effect); */ /* not used anymore */
1780
1781                 if (ob->type == OB_ARMATURE) {
1782                         bArmature *arm = ob->data;
1783                         if (arm && ob->pose && arm->act_bone) {
1784                                 BLI_strncpy(ob->pose->proxy_act_bone, arm->act_bone->name, sizeof(ob->pose->proxy_act_bone));
1785                         }
1786                 }
1787
1788                 write_pose(wd, ob->pose);
1789                 write_defgroups(wd, &ob->defbase);
1790                 write_fmaps(wd, &ob->fmaps);
1791                 write_constraints(wd, &ob->constraints);
1792                 write_motionpath(wd, ob->mpath);
1793
1794                 writestruct(wd, DATA, PartDeflect, 1, ob->pd);
1795                 writestruct(wd, DATA, SoftBody, 1, ob->soft);
1796                 if (ob->soft) {
1797                         write_pointcaches(wd, &ob->soft->ptcaches);
1798                         writestruct(wd, DATA, EffectorWeights, 1, ob->soft->effector_weights);
1799                 }
1800
1801                 if (ob->rigidbody_object) {
1802                         /* TODO: if any extra data is added to handle duplis, will need separate function then */
1803                         writestruct(wd, DATA, RigidBodyOb, 1, ob->rigidbody_object);
1804                 }
1805                 if (ob->rigidbody_constraint) {
1806                         writestruct(wd, DATA, RigidBodyCon, 1, ob->rigidbody_constraint);
1807                 }
1808
1809                 if (ob->type == OB_EMPTY && ob->empty_drawtype == OB_EMPTY_IMAGE) {
1810                         writestruct(wd, DATA, ImageUser, 1, ob->iuser);
1811                 }
1812
1813                 write_particlesystems(wd, &ob->particlesystem);
1814                 write_modifiers(wd, &ob->modifiers);
1815
1816                 writelist(wd, DATA, LinkData, &ob->pc_ids);
1817                 writelist(wd, DATA, LodLevel, &ob->lodlevels);
1818
1819                 write_previews(wd, ob->preview);
1820         }
1821 }
1822
1823
1824 static void write_vfont(WriteData *wd, VFont *vf)
1825 {
1826         if (vf->id.us > 0 || wd->use_memfile) {
1827                 /* write LibData */
1828                 writestruct(wd, ID_VF, VFont, 1, vf);
1829                 write_iddata(wd, &vf->id);
1830
1831                 /* direct data */
1832                 if (vf->packedfile) {
1833                         PackedFile *pf = vf->packedfile;
1834                         writestruct(wd, DATA, PackedFile, 1, pf);
1835                         writedata(wd, DATA, pf->size, pf->data);
1836                 }
1837         }
1838 }
1839
1840
1841 static void write_key(WriteData *wd, Key *key)
1842 {
1843         if (key->id.us > 0 || wd->use_memfile) {
1844                 /* write LibData */
1845                 writestruct(wd, ID_KE, Key, 1, key);
1846                 write_iddata(wd, &key->id);
1847
1848                 if (key->adt) {
1849                         write_animdata(wd, key->adt);
1850                 }
1851
1852                 /* direct data */
1853                 for (KeyBlock *kb = key->block.first; kb; kb = kb->next) {
1854                         writestruct(wd, DATA, KeyBlock, 1, kb);
1855                         if (kb->data) {
1856                                 writedata(wd, DATA, kb->totelem * key->elemsize, kb->data);
1857                         }
1858                 }
1859         }
1860 }
1861
1862 static void write_camera(WriteData *wd, Camera *cam)
1863 {
1864         if (cam->id.us > 0 || wd->use_memfile) {
1865                 /* write LibData */
1866                 writestruct(wd, ID_CA, Camera, 1, cam);
1867                 write_iddata(wd, &cam->id);
1868
1869                 if (cam->adt) {
1870                         write_animdata(wd, cam->adt);
1871                 }
1872
1873                 for (CameraBGImage *bgpic = cam->bg_images.first; bgpic; bgpic = bgpic->next) {
1874                         writestruct(wd, DATA, CameraBGImage, 1, bgpic);
1875                 }
1876         }
1877 }
1878
1879 static void write_mball(WriteData *wd, MetaBall *mb)
1880 {
1881         if (mb->id.us > 0 || wd->use_memfile) {
1882                 /* write LibData */
1883                 writestruct(wd, ID_MB, MetaBall, 1, mb);
1884                 write_iddata(wd, &mb->id);
1885
1886                 /* direct data */
1887                 writedata(wd, DATA, sizeof(void *) * mb->totcol, mb->mat);
1888                 if (mb->adt) {
1889                         write_animdata(wd, mb->adt);
1890                 }
1891
1892                 for (MetaElem *ml = mb->elems.first; ml; ml = ml->next) {
1893                         writestruct(wd, DATA, MetaElem, 1, ml);
1894                 }
1895         }
1896 }
1897
1898 static void write_curve(WriteData *wd, Curve *cu)
1899 {
1900         if (cu->id.us > 0 || wd->use_memfile) {
1901                 /* write LibData */
1902                 writestruct(wd, ID_CU, Curve, 1, cu);
1903                 write_iddata(wd, &cu->id);
1904
1905                 /* direct data */
1906                 writedata(wd, DATA, sizeof(void *) * cu->totcol, cu->mat);
1907                 if (cu->adt) {
1908                         write_animdata(wd, cu->adt);
1909                 }
1910
1911                 if (cu->vfont) {
1912                         writedata(wd, DATA, cu->len + 1, cu->str);
1913                         writestruct(wd, DATA, CharInfo, cu->len_wchar + 1, cu->strinfo);
1914                         writestruct(wd, DATA, TextBox, cu->totbox, cu->tb);
1915                 }
1916                 else {
1917                         /* is also the order of reading */
1918                         for (Nurb *nu = cu->nurb.first; nu; nu = nu->next) {
1919                                 writestruct(wd, DATA, Nurb, 1, nu);
1920                         }
1921                         for (Nurb *nu = cu->nurb.first; nu; nu = nu->next) {
1922                                 if (nu->type == CU_BEZIER) {
1923                                         writestruct(wd, DATA, BezTriple, nu->pntsu, nu->bezt);
1924                                 }
1925                                 else {
1926                                         writestruct(wd, DATA, BPoint, nu->pntsu * nu->pntsv, nu->bp);
1927                                         if (nu->knotsu) {
1928                                                 writedata(wd, DATA, KNOTSU(nu) * sizeof(float), nu->knotsu);
1929                                         }
1930                                         if (nu->knotsv) {
1931                                                 writedata(wd, DATA, KNOTSV(nu) * sizeof(float), nu->knotsv);
1932                                         }
1933                                 }
1934                         }
1935                 }
1936         }
1937 }
1938
1939 static void write_dverts(WriteData *wd, int count, MDeformVert *dvlist)
1940 {
1941         if (dvlist) {
1942
1943                 /* Write the dvert list */
1944                 writestruct(wd, DATA, MDeformVert, count, dvlist);
1945
1946                 /* Write deformation data for each dvert */
1947                 for (int i = 0; i < count; i++) {
1948                         if (dvlist[i].dw) {
1949                                 writestruct(wd, DATA, MDeformWeight, dvlist[i].totweight, dvlist[i].dw);
1950                         }
1951                 }
1952         }
1953 }
1954
1955 static void write_mdisps(WriteData *wd, int count, MDisps *mdlist, int external)
1956 {
1957         if (mdlist) {
1958                 int i;
1959
1960                 writestruct(wd, DATA, MDisps, count, mdlist);
1961                 for (i = 0; i < count; ++i) {
1962                         MDisps *md = &mdlist[i];
1963                         if (md->disps) {
1964                                 if (!external) {
1965                                         writedata(wd, DATA, sizeof(float) * 3 * md->totdisp, md->disps);
1966                                 }
1967                         }
1968
1969                         if (md->hidden) {
1970                                 writedata(wd, DATA, BLI_BITMAP_SIZE(md->totdisp), md->hidden);
1971                         }
1972                 }
1973         }
1974 }
1975
1976 static void write_grid_paint_mask(WriteData *wd, int count, GridPaintMask *grid_paint_mask)
1977 {
1978         if (grid_paint_mask) {
1979                 int i;
1980
1981                 writestruct(wd, DATA, GridPaintMask, count, grid_paint_mask);
1982                 for (i = 0; i < count; ++i) {
1983                         GridPaintMask *gpm = &grid_paint_mask[i];
1984                         if (gpm->data) {
1985                                 const int gridsize = BKE_ccg_gridsize(gpm->level);
1986                                 writedata(wd, DATA,
1987                                           sizeof(*gpm->data) * gridsize * gridsize,
1988                                           gpm->data);
1989                         }
1990                 }
1991         }
1992 }
1993
1994 static void write_customdata(
1995         WriteData *wd, ID *id, int count, CustomData *data, CustomDataLayer *layers,
1996         int partial_type, int partial_count)
1997 {
1998         int i;
1999
2000         /* write external customdata (not for undo) */
2001         if (data->external && (wd->use_memfile == false)) {
2002                 CustomData_external_write(data, id, CD_MASK_MESH, count, 0);
2003         }
2004
2005         writestruct_at_address(wd, DATA, CustomDataLayer, data->totlayer, data->layers, layers);
2006
2007         for (i = 0; i < data->totlayer; i++) {
2008                 CustomDataLayer *layer = &layers[i];
2009                 const char *structname;
2010                 int structnum, datasize;
2011
2012                 if (layer->type == CD_MDEFORMVERT) {
2013                         /* layer types that allocate own memory need special handling */
2014                         write_dverts(wd, count, layer->data);
2015                 }
2016                 else if (layer->type == CD_MDISPS) {
2017                         write_mdisps(wd, count, layer->data, layer->flag & CD_FLAG_EXTERNAL);
2018                 }
2019                 else if (layer->type == CD_PAINT_MASK) {
2020                         const float *layer_data = layer->data;
2021                         writedata(wd, DATA, sizeof(*layer_data) * count, layer_data);
2022                 }
2023                 else if (layer->type == CD_GRID_PAINT_MASK) {
2024                         write_grid_paint_mask(wd, count, layer->data);
2025                 }
2026                 else if (layer->type == CD_FACEMAP) {
2027                         const int *layer_data = layer->data;
2028                         writedata(wd, DATA, sizeof(*layer_data) * count, layer_data);
2029                 }
2030                 else {
2031                         CustomData_file_write_info(layer->type, &structname, &structnum);
2032                         if (structnum) {
2033                                 /* when using partial visibility, the MEdge and MFace layers
2034                                  * are smaller than the original, so their type and count is
2035                                  * passed to make this work */
2036                                 if (layer->type != partial_type) {
2037                                         datasize = structnum * count;
2038                                 }
2039                                 else {
2040                                         datasize = structnum * partial_count;
2041                                 }
2042
2043                                 writestruct_id(wd, DATA, structname, datasize, layer->data);
2044                         }
2045                         else {
2046                                 printf("%s error: layer '%s':%d - can't be written to file\n",
2047                                        __func__, structname, layer->type);
2048                         }
2049                 }
2050         }
2051
2052         if (data->external) {
2053                 writestruct(wd, DATA, CustomDataExternal, 1, data->external);
2054         }
2055 }
2056
2057 static void write_mesh(WriteData *wd, Mesh *mesh)
2058 {
2059 #ifdef USE_BMESH_SAVE_AS_COMPAT
2060         const bool save_for_old_blender = wd->use_mesh_compat;  /* option to save with older mesh format */
2061 #else
2062         const bool save_for_old_blender = false;
2063 #endif
2064
2065         CustomDataLayer *vlayers = NULL, vlayers_buff[CD_TEMP_CHUNK_SIZE];
2066         CustomDataLayer *elayers = NULL, elayers_buff[CD_TEMP_CHUNK_SIZE];
2067         CustomDataLayer *flayers = NULL, flayers_buff[CD_TEMP_CHUNK_SIZE];
2068         CustomDataLayer *llayers = NULL, llayers_buff[CD_TEMP_CHUNK_SIZE];
2069         CustomDataLayer *players = NULL, players_buff[CD_TEMP_CHUNK_SIZE];
2070
2071         if (mesh->id.us > 0 || wd->use_memfile) {
2072                 /* write LibData */
2073                 if (!save_for_old_blender) {
2074                         /* write a copy of the mesh, don't modify in place because it is
2075                          * not thread safe for threaded renders that are reading this */
2076                         Mesh *old_mesh = mesh;
2077                         Mesh copy_mesh = *mesh;
2078                         mesh = &copy_mesh;
2079
2080 #ifdef USE_BMESH_SAVE_WITHOUT_MFACE
2081                         /* cache only - don't write */
2082                         mesh->mface = NULL;
2083                         mesh->totface = 0;
2084                         memset(&mesh->fdata, 0, sizeof(mesh->fdata));
2085 #endif /* USE_BMESH_SAVE_WITHOUT_MFACE */
2086
2087                         /**
2088                          * Those calls:
2089                          *   - Reduce mesh->xdata.totlayer to number of layers to write.
2090                          *   - Fill xlayers with those layers to be written.
2091                          * Note that mesh->xdata is from now on invalid for Blender, but this is why the whole mesh is
2092                          * a temp local copy!
2093                          */
2094                         CustomData_file_write_prepare(&mesh->vdata, &vlayers, vlayers_buff, ARRAY_SIZE(vlayers_buff));
2095                         CustomData_file_write_prepare(&mesh->edata, &elayers, elayers_buff, ARRAY_SIZE(elayers_buff));
2096 #ifndef USE_BMESH_SAVE_WITHOUT_MFACE  /* Do not copy org fdata in this case!!! */
2097                         CustomData_file_write_prepare(&mesh->fdata, &flayers, flayers_buff, ARRAY_SIZE(flayers_buff));
2098 #else
2099                         flayers = flayers_buff;
2100 #endif
2101                         CustomData_file_write_prepare(&mesh->ldata, &llayers, llayers_buff, ARRAY_SIZE(llayers_buff));
2102                         CustomData_file_write_prepare(&mesh->pdata, &players, players_buff, ARRAY_SIZE(players_buff));
2103
2104                         writestruct_at_address(wd, ID_ME, Mesh, 1, old_mesh, mesh);
2105                         write_iddata(wd, &mesh->id);
2106
2107                         /* direct data */
2108                         if (mesh->adt) {
2109                                 write_animdata(wd, mesh->adt);
2110                         }
2111
2112                         writedata(wd, DATA, sizeof(void *) * mesh->totcol, mesh->mat);
2113                         writedata(wd, DATA, sizeof(MSelect) * mesh->totselect, mesh->mselect);
2114
2115                         write_customdata(wd, &mesh->id, mesh->totvert, &mesh->vdata, vlayers, -1, 0);
2116                         write_customdata(wd, &mesh->id, mesh->totedge, &mesh->edata, elayers, -1, 0);
2117                         /* fdata is really a dummy - written so slots align */
2118                         write_customdata(wd, &mesh->id, mesh->totface, &mesh->fdata, flayers, -1, 0);
2119                         write_customdata(wd, &mesh->id, mesh->totloop, &mesh->ldata, llayers, -1, 0);
2120                         write_customdata(wd, &mesh->id, mesh->totpoly, &mesh->pdata, players, -1, 0);
2121
2122                         /* restore pointer */
2123                         mesh = old_mesh;
2124                 }
2125                 else {
2126
2127 #ifdef USE_BMESH_SAVE_AS_COMPAT
2128                         /* write a copy of the mesh, don't modify in place because it is
2129                          * not thread safe for threaded renders that are reading this */
2130                         Mesh *old_mesh = mesh;
2131                         Mesh copy_mesh = *mesh;
2132                         mesh = &copy_mesh;
2133
2134                         mesh->mpoly = NULL;
2135                         mesh->mface = NULL;
2136                         mesh->totface = 0;
2137                         mesh->totpoly = 0;
2138                         mesh->totloop = 0;
2139                         CustomData_reset(&mesh->fdata);
2140                         CustomData_reset(&mesh->pdata);
2141                         CustomData_reset(&mesh->ldata);
2142                         mesh->edit_btmesh = NULL;
2143
2144                         /* now fill in polys to mfaces */
2145                         /* XXX This breaks writing design, by using temp allocated memory, which will likely generate
2146                          *     duplicates in stored 'old' addresses.
2147                          *     This is very bad, but do not see easy way to avoid this, aside from generating those data
2148                          *     outside of save process itself.
2149                          *     Maybe we can live with this, though?
2150                          */
2151                         mesh->totface = BKE_mesh_mpoly_to_mface(
2152                                 &mesh->fdata, &old_mesh->ldata, &old_mesh->pdata,
2153                                 mesh->totface, old_mesh->totloop, old_mesh->totpoly);
2154
2155                         BKE_mesh_update_customdata_pointers(mesh, false);
2156
2157                         CustomData_file_write_prepare(&mesh->vdata, &vlayers, vlayers_buff, ARRAY_SIZE(vlayers_buff));
2158                         CustomData_file_write_prepare(&mesh->edata, &elayers, elayers_buff, ARRAY_SIZE(elayers_buff));
2159                         CustomData_file_write_prepare(&mesh->fdata, &flayers, flayers_buff, ARRAY_SIZE(flayers_buff));
2160 #if 0
2161                         CustomData_file_write_prepare(&mesh->ldata, &llayers, llayers_buff, ARRAY_SIZE(llayers_buff));
2162                         CustomData_file_write_prepare(&mesh->pdata, &players, players_buff, ARRAY_SIZE(players_buff));
2163 #endif
2164
2165                         writestruct_at_address(wd, ID_ME, Mesh, 1, old_mesh, mesh);
2166                         write_iddata(wd, &mesh->id);
2167
2168                         /* direct data */
2169                         if (mesh->adt) {
2170                                 write_animdata(wd, mesh->adt);
2171                         }
2172
2173                         writedata(wd, DATA, sizeof(void *) * mesh->totcol, mesh->mat);
2174                         /* writedata(wd, DATA, sizeof(MSelect) * mesh->totselect, mesh->mselect); */ /* pre-bmesh NULL's */
2175
2176                         write_customdata(wd, &mesh->id, mesh->totvert, &mesh->vdata, vlayers, -1, 0);
2177                         write_customdata(wd, &mesh->id, mesh->totedge, &mesh->edata, elayers, -1, 0);
2178                         write_customdata(wd, &mesh->id, mesh->totface, &mesh->fdata, flayers, -1, 0);
2179                         /* harmless for older blender versioins but _not_ writing these keeps file size down */
2180 #if 0
2181                         write_customdata(wd, &mesh->id, mesh->totloop, &mesh->ldata, llayers, -1, 0);
2182                         write_customdata(wd, &mesh->id, mesh->totpoly, &mesh->pdata, players, -1, 0);
2183 #endif
2184
2185                         CustomData_free(&mesh->fdata, mesh->totface);
2186                         flayers = NULL;
2187
2188                         /* restore pointer */
2189                         mesh = old_mesh;
2190 #endif /* USE_BMESH_SAVE_AS_COMPAT */
2191                 }
2192         }
2193
2194         if (vlayers && vlayers != vlayers_buff) {
2195                 MEM_freeN(vlayers);
2196         }
2197         if (elayers && elayers != elayers_buff) {
2198                 MEM_freeN(elayers);
2199         }
2200         if (flayers && flayers != flayers_buff) {
2201                 MEM_freeN(flayers);
2202         }
2203         if (llayers && llayers != llayers_buff) {
2204                 MEM_freeN(llayers);
2205         }
2206         if (players && players != players_buff) {
2207                 MEM_freeN(players);
2208         }
2209 }
2210
2211 static void write_lattice(WriteData *wd, Lattice *lt)
2212 {
2213         if (lt->id.us > 0 || wd->use_memfile) {
2214                 /* write LibData */
2215                 writestruct(wd, ID_LT, Lattice, 1, lt);
2216                 write_iddata(wd, &lt->id);
2217
2218                 /* write animdata */
2219                 if (lt->adt) {
2220                         write_animdata(wd, lt->adt);
2221                 }
2222
2223                 /* direct data */
2224                 writestruct(wd, DATA, BPoint, lt->pntsu * lt->pntsv * lt->pntsw, lt->def);
2225
2226                 write_dverts(wd, lt->pntsu * lt->pntsv * lt->pntsw, lt->dvert);
2227         }
2228 }
2229
2230 static void write_image(WriteData *wd, Image *ima)
2231 {
2232         if (ima->id.us > 0 || wd->use_memfile) {
2233                 ImagePackedFile *imapf;
2234
2235                 /* Some trickery to keep forward compatibility of packed images. */
2236                 BLI_assert(ima->packedfile == NULL);
2237                 if (ima->packedfiles.first != NULL) {
2238                         imapf = ima->packedfiles.first;
2239                         ima->packedfile = imapf->packedfile;
2240                 }
2241
2242                 /* write LibData */
2243                 writestruct(wd, ID_IM, Image, 1, ima);
2244                 write_iddata(wd, &ima->id);
2245
2246                 for (imapf = ima->packedfiles.first; imapf; imapf = imapf->next) {
2247                         writestruct(wd, DATA, ImagePackedFile, 1, imapf);
2248                         if (imapf->packedfile) {
2249                                 PackedFile *pf = imapf->packedfile;
2250                                 writestruct(wd, DATA, PackedFile, 1, pf);
2251                                 writedata(wd, DATA, pf->size, pf->data);
2252                         }
2253                 }
2254
2255                 write_previews(wd, ima->preview);
2256
2257                 for (ImageView *iv = ima->views.first; iv; iv = iv->next) {
2258                         writestruct(wd, DATA, ImageView, 1, iv);
2259                 }
2260                 writestruct(wd, DATA, Stereo3dFormat, 1, ima->stereo3d_format);
2261
2262                 ima->packedfile = NULL;
2263         }
2264 }
2265
2266 static void write_texture(WriteData *wd, Tex *tex)
2267 {
2268         if (tex->id.us > 0 || wd->use_memfile) {
2269                 /* write LibData */
2270                 writestruct(wd, ID_TE, Tex, 1, tex);
2271                 write_iddata(wd, &tex->id);
2272
2273                 if (tex->adt) {
2274                         write_animdata(wd, tex->adt);
2275                 }
2276
2277                 /* direct data */
2278                 if (tex->coba) {
2279                         writestruct(wd, DATA, ColorBand, 1, tex->coba);
2280                 }
2281
2282                 /* nodetree is integral part of texture, no libdata */
2283                 if (tex->nodetree) {
2284                         writestruct(wd, DATA, bNodeTree, 1, tex->nodetree);
2285                         write_nodetree_nolib(wd, tex->nodetree);
2286                 }
2287
2288                 write_previews(wd, tex->preview);
2289         }
2290 }
2291
2292 static void write_material(WriteData *wd, Material *ma)
2293 {
2294         if (ma->id.us > 0 || wd->use_memfile) {
2295                 /* write LibData */
2296                 writestruct(wd, ID_MA, Material, 1, ma);
2297                 write_iddata(wd, &ma->id);
2298
2299                 if (ma->adt) {
2300                         write_animdata(wd, ma->adt);
2301                 }
2302
2303                 /* nodetree is integral part of material, no libdata */
2304                 if (ma->nodetree) {
2305                         writestruct(wd, DATA, bNodeTree, 1, ma->nodetree);
2306                         write_nodetree_nolib(wd, ma->nodetree);
2307                 }
2308
2309                 write_previews(wd, ma->preview);
2310         }
2311 }
2312
2313 static void write_world(WriteData *wd, World *wrld)
2314 {
2315         if (wrld->id.us > 0 || wd->use_memfile) {
2316                 /* write LibData */
2317                 writestruct(wd, ID_WO, World, 1, wrld);
2318                 write_iddata(wd, &wrld->id);
2319
2320                 if (wrld->adt) {
2321                         write_animdata(wd, wrld->adt);
2322                 }
2323
2324                 /* nodetree is integral part of world, no libdata */
2325                 if (wrld->nodetree) {
2326                         writestruct(wd, DATA, bNodeTree, 1, wrld->nodetree);
2327                         write_nodetree_nolib(wd, wrld->nodetree);
2328                 }
2329
2330                 write_previews(wd, wrld->preview);
2331         }
2332 }
2333
2334 static void write_lamp(WriteData *wd, Lamp *la)
2335 {
2336         if (la->id.us > 0 || wd->use_memfile) {
2337                 /* write LibData */
2338                 writestruct(wd, ID_LA, Lamp, 1, la);
2339                 write_iddata(wd, &la->id);
2340
2341                 if (la->adt) {
2342                         write_animdata(wd, la->adt);
2343                 }
2344
2345                 if (la->curfalloff) {
2346                         write_curvemapping(wd, la->curfalloff);
2347                 }
2348
2349                 /* nodetree is integral part of lamps, no libdata */
2350                 if (la->nodetree) {
2351                         writestruct(wd, DATA, bNodeTree, 1, la->nodetree);
2352                         write_nodetree_nolib(wd, la->nodetree);
2353                 }
2354
2355                 write_previews(wd, la->preview);
2356         }
2357 }
2358
2359 static void write_sequence_modifiers(WriteData *wd, ListBase *modbase)
2360 {
2361         SequenceModifierData *smd;
2362
2363         for (smd = modbase->first; smd; smd = smd->next) {
2364                 const SequenceModifierTypeInfo *smti = BKE_sequence_modifier_type_info_get(smd->type);
2365
2366                 if (smti) {
2367                         writestruct_id(wd, DATA, smti->struct_name, 1, smd);
2368
2369                         if (smd->type == seqModifierType_Curves) {
2370                                 CurvesModifierData *cmd = (CurvesModifierData *)smd;
2371
2372                                 write_curvemapping(wd, &cmd->curve_mapping);
2373                         }
2374                         else if (smd->type == seqModifierType_HueCorrect) {
2375                                 HueCorrectModifierData *hcmd = (HueCorrectModifierData *)smd;
2376
2377                                 write_curvemapping(wd, &hcmd->curve_mapping);
2378                         }
2379                 }
2380                 else {
2381                         writestruct(wd, DATA, SequenceModifierData, 1, smd);
2382                 }
2383         }
2384 }
2385
2386 static void write_view_settings(WriteData *wd, ColorManagedViewSettings *view_settings)
2387 {
2388         if (view_settings->curve_mapping) {
2389                 write_curvemapping(wd, view_settings->curve_mapping);
2390         }
2391 }
2392
2393 static void write_paint(WriteData *wd, Paint *p)
2394 {
2395         if (p->cavity_curve) {
2396                 write_curvemapping(wd, p->cavity_curve);
2397         }
2398 }
2399
2400 static void write_scene_collection(WriteData *wd, SceneCollection *sc)
2401 {
2402         writestruct(wd, DATA, SceneCollection, 1, sc);
2403
2404         writelist(wd, DATA, LinkData, &sc->objects);
2405
2406         for (SceneCollection *nsc = sc->scene_collections.first; nsc; nsc = nsc->next) {
2407                 write_scene_collection(wd, nsc);
2408         }
2409 }
2410
2411 static void write_layer_collections(WriteData *wd, ListBase *lb)
2412 {
2413         for (LayerCollection *lc = lb->first; lc; lc = lc->next) {
2414                 writestruct(wd, DATA, LayerCollection, 1, lc);
2415
2416                 writelist(wd, DATA, LinkData, &lc->object_bases);
2417
2418                 write_layer_collections(wd, &lc->layer_collections);
2419         }
2420 }
2421
2422 static void write_view_layer(WriteData *wd, ViewLayer *view_layer)
2423 {
2424         writestruct(wd, DATA, ViewLayer, 1, view_layer);
2425         writelist(wd, DATA, Base, &view_layer->object_bases);
2426
2427         if (view_layer->id_properties) {
2428                 IDP_WriteProperty(view_layer->id_properties, wd);
2429         }
2430
2431         for (FreestyleModuleConfig *fmc = view_layer->freestyle_config.modules.first; fmc; fmc = fmc->next) {
2432                 writestruct(wd, DATA, FreestyleModuleConfig, 1, fmc);
2433         }
2434
2435         for (FreestyleLineSet *fls = view_layer->freestyle_config.linesets.first; fls; fls = fls->next) {
2436                 writestruct(wd, DATA, FreestyleLineSet, 1, fls);
2437         }
2438         write_layer_collections(wd, &view_layer->layer_collections);
2439 }
2440
2441 static void write_scene(WriteData *wd, Scene *sce)
2442 {
2443         /* write LibData */
2444         writestruct(wd, ID_SCE, Scene, 1, sce);
2445         write_iddata(wd, &sce->id);
2446
2447         if (sce->adt) {
2448                 write_animdata(wd, sce->adt);
2449         }
2450         write_keyingsets(wd, &sce->keyingsets);
2451
2452         /* direct data */
2453         ToolSettings *tos = sce->toolsettings;
2454         writestruct(wd, DATA, ToolSettings, 1, tos);
2455         if (tos->vpaint) {
2456                 writestruct(wd, DATA, VPaint, 1, tos->vpaint);
2457                 write_paint(wd, &tos->vpaint->paint);
2458         }
2459         if (tos->wpaint) {
2460                 writestruct(wd, DATA, VPaint, 1, tos->wpaint);
2461                 write_paint(wd, &tos->wpaint->paint);
2462         }
2463         if (tos->sculpt) {
2464                 writestruct(wd, DATA, Sculpt, 1, tos->sculpt);
2465                 write_paint(wd, &tos->sculpt->paint);
2466         }
2467         if (tos->uvsculpt) {
2468                 writestruct(wd, DATA, UvSculpt, 1, tos->uvsculpt);
2469                 write_paint(wd, &tos->uvsculpt->paint);
2470         }
2471         /* write grease-pencil drawing brushes to file */
2472         writelist(wd, DATA, bGPDbrush, &tos->gp_brushes);
2473         for (bGPDbrush *brush = tos->gp_brushes.first; brush; brush = brush->next) {
2474                 if (brush->cur_sensitivity) {
2475                         write_curvemapping(wd, brush->cur_sensitivity);
2476                 }
2477                 if (brush->cur_strength) {
2478                         write_curvemapping(wd, brush->cur_strength);
2479                 }
2480                 if (brush->cur_jitter) {
2481                         write_curvemapping(wd, brush->cur_jitter);
2482                 }
2483         }
2484         /* write grease-pencil custom ipo curve to file */
2485         if (tos->gp_interpolate.custom_ipo) {
2486                 write_curvemapping(wd, tos->gp_interpolate.custom_ipo);
2487         }
2488
2489
2490         write_paint(wd, &tos->imapaint.paint);
2491
2492         Editing *ed = sce->ed;
2493         if (ed) {
2494                 Sequence *seq;
2495
2496                 writestruct(wd, DATA, Editing, 1, ed);
2497
2498                 /* reset write flags too */
2499
2500                 SEQ_BEGIN(ed, seq)
2501                 {
2502                         if (seq->strip) {
2503                                 seq->strip->done = false;
2504                         }
2505                         writestruct(wd, DATA, Sequence, 1, seq);
2506                 }
2507                 SEQ_END
2508
2509                 SEQ_BEGIN(ed, seq)
2510                 {
2511                         if (seq->strip && seq->strip->done == 0) {
2512                                 /* write strip with 'done' at 0 because readfile */
2513
2514                                 if (seq->effectdata) {
2515                                         switch (seq->type) {
2516                                                 case SEQ_TYPE_COLOR:
2517                                                         writestruct(wd, DATA, SolidColorVars, 1, seq->effectdata);
2518                                                         break;
2519                                                 case SEQ_TYPE_SPEED:
2520                                                         writestruct(wd, DATA, SpeedControlVars, 1, seq->effectdata);
2521                                                         break;
2522                                                 case SEQ_TYPE_WIPE:
2523                                                         writestruct(wd, DATA, WipeVars, 1, seq->effectdata);
2524                                                         break;
2525                                                 case SEQ_TYPE_GLOW:
2526                                                         writestruct(wd, DATA, GlowVars, 1, seq->effectdata);
2527                                                         break;
2528                                                 case SEQ_TYPE_TRANSFORM:
2529                                                         writestruct(wd, DATA, TransformVars, 1, seq->effectdata);
2530                                                         break;
2531                                                 case SEQ_TYPE_GAUSSIAN_BLUR:
2532                                                         writestruct(wd, DATA, GaussianBlurVars, 1, seq->effectdata);
2533                                                         break;
2534                                                 case SEQ_TYPE_TEXT:
2535                                                         writestruct(wd, DATA, TextVars, 1, seq->effectdata);
2536                                                         break;
2537                                                 case SEQ_TYPE_COLORMIX:
2538                                                         writestruct(wd, DATA, ColorMixVars, 1, seq->effectdata);
2539                                                         break;
2540                                         }
2541                                 }
2542
2543                                 writestruct(wd, DATA, Stereo3dFormat, 1, seq->stereo3d_format);
2544
2545                                 Strip *strip = seq->strip;
2546                                 writestruct(wd, DATA, Strip, 1, strip);
2547                                 if (seq->flag & SEQ_USE_CROP && strip->crop) {
2548                                         writestruct(wd, DATA, StripCrop, 1, strip->crop);
2549                                 }
2550                                 if (seq->flag & SEQ_USE_TRANSFORM && strip->transform) {
2551                                         writestruct(wd, DATA, StripTransform, 1, strip->transform);
2552                                 }
2553                                 if (seq->flag & SEQ_USE_PROXY && strip->proxy) {
2554                                         writestruct(wd, DATA, StripProxy, 1, strip->proxy);
2555                                 }
2556                                 if (seq->type == SEQ_TYPE_IMAGE) {
2557                                         writestruct(wd, DATA, StripElem,
2558                                                     MEM_allocN_len(strip->stripdata) / sizeof(struct StripElem),
2559                                                     strip->stripdata);
2560                                 }
2561                                 else if (ELEM(seq->type, SEQ_TYPE_MOVIE, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SOUND_HD)) {
2562                                         writestruct(wd, DATA, StripElem, 1, strip->stripdata);
2563                                 }
2564
2565                                 strip->done = true;
2566                         }
2567
2568                         if (seq->prop) {
2569                                 IDP_WriteProperty(seq->prop, wd);
2570                         }
2571
2572                         write_sequence_modifiers(wd, &seq->modifiers);
2573                 }
2574                 SEQ_END
2575
2576                 /* new; meta stack too, even when its nasty restore code */
2577                 for (MetaStack *ms = ed->metastack.first; ms; ms = ms->next) {
2578                         writestruct(wd, DATA, MetaStack, 1, ms);
2579                 }
2580         }
2581
2582         if (sce->r.avicodecdata) {
2583                 writestruct(wd, DATA, AviCodecData, 1, sce->r.avicodecdata);
2584                 if (sce->r.avicodecdata->lpFormat) {
2585                         writedata(wd, DATA, sce->r.avicodecdata->cbFormat, sce->r.avicodecdata->lpFormat);
2586                 }
2587                 if (sce->r.avicodecdata->lpParms) {
2588                         writedata(wd, DATA, sce->r.avicodecdata->cbParms, sce->r.avicodecdata->lpParms);
2589                 }
2590         }
2591         if (sce->r.ffcodecdata.properties) {
2592                 IDP_WriteProperty(sce->r.ffcodecdata.properties, wd);
2593         }
2594
2595         /* writing dynamic list of TimeMarkers to the blend file */
2596         for (TimeMarker *marker = sce->markers.first; marker; marker = marker->next) {
2597                 writestruct(wd, DATA, TimeMarker, 1, marker);
2598         }
2599
2600         /* writing dynamic list of TransformOrientations to the blend file */
2601         for (TransformOrientation *ts = sce->transform_spaces.first; ts; ts = ts->next) {
2602                 writestruct(wd, DATA, TransformOrientation, 1, ts);
2603         }
2604
2605         /* writing MultiView to the blend file */
2606         for (SceneRenderView *srv = sce->r.views.first; srv; srv = srv->next) {
2607                 writestruct(wd, DATA, SceneRenderView, 1, srv);
2608         }
2609
2610         if (sce->nodetree) {
2611                 writestruct(wd, DATA, bNodeTree, 1, sce->nodetree);
2612                 write_nodetree_nolib(wd, sce->nodetree);
2613         }
2614
2615         write_view_settings(wd, &sce->view_settings);
2616
2617         /* writing RigidBodyWorld data to the blend file */
2618         if (sce->rigidbody_world) {
2619                 writestruct(wd, DATA, RigidBodyWorld, 1, sce->rigidbody_world);
2620                 writestruct(wd, DATA, EffectorWeights, 1, sce->rigidbody_world->effector_weights);
2621                 write_pointcaches(wd, &(sce->rigidbody_world->ptcaches));
2622         }
2623
2624         write_previews(wd, sce->preview);
2625         write_curvemapping_curves(wd, &sce->r.mblur_shutter_curve);
2626         write_scene_collection(wd, sce->collection);
2627
2628         for (ViewLayer *view_layer = sce->view_layers.first; view_layer; view_layer = view_layer->next) {
2629                 write_view_layer(wd, view_layer);
2630         }
2631
2632         /* Freed on doversion. */
2633         BLI_assert(sce->layer_properties == NULL);
2634 }
2635
2636 static void write_gpencil(WriteData *wd, bGPdata *gpd)
2637 {
2638         if (gpd->id.us > 0 || wd->use_memfile) {
2639                 /* write gpd data block to file */
2640                 writestruct(wd, ID_GD, bGPdata, 1, gpd);
2641                 write_iddata(wd, &gpd->id);
2642
2643                 if (gpd->adt) {
2644                         write_animdata(wd, gpd->adt);
2645                 }
2646
2647                 /* write grease-pencil layers to file */
2648                 writelist(wd, DATA, bGPDlayer, &gpd->layers);
2649                 for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) {
2650                         /* write this layer's frames to file */
2651                         writelist(wd, DATA, bGPDframe, &gpl->frames);
2652                         for (bGPDframe *gpf = gpl->frames.first; gpf; gpf = gpf->next) {
2653                                 /* write strokes */
2654                                 writelist(wd, DATA, bGPDstroke, &gpf->strokes);
2655                                 for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) {
2656                                         writestruct(wd, DATA, bGPDspoint, gps->totpoints, gps->points);
2657                                 }
2658                         }
2659                 }
2660
2661                 /* write grease-pencil palettes */
2662                 writelist(wd, DATA, bGPDpalette, &gpd->palettes);
2663                 for (bGPDpalette *palette = gpd->palettes.first; palette; palette = palette->next) {
2664                         writelist(wd, DATA, bGPDpalettecolor, &palette->colors);
2665                 }
2666         }
2667 }
2668
2669 static void write_region(WriteData *wd, ARegion *ar, int spacetype)
2670 {
2671         writestruct(wd, DATA, ARegion, 1, ar);
2672
2673         if (ar->regiondata) {
2674                 switch (spacetype) {
2675                         case SPACE_VIEW3D:
2676                                 if (ar->regiontype == RGN_TYPE_WINDOW) {
2677                                         RegionView3D *rv3d = ar->regiondata;
2678                                         writestruct(wd, DATA, RegionView3D, 1, rv3d);
2679
2680                                         if (rv3d->localvd) {
2681                                                 writestruct(wd, DATA, RegionView3D, 1, rv3d->localvd);
2682                                         }
2683                                         if (rv3d->clipbb) {
2684                                                 writestruct(wd, DATA, BoundBox, 1, rv3d->clipbb);
2685                                         }
2686
2687                                 }
2688                                 else
2689                                         printf("regiondata write missing!\n");
2690                                 break;
2691                         default:
2692                                 printf("regiondata write missing!\n");
2693                 }
2694         }
2695 }
2696
2697 static void write_uilist(WriteData *wd, uiList *ui_list)
2698 {
2699         writestruct(wd, DATA, uiList, 1, ui_list);
2700
2701         if (ui_list->properties) {
2702                 IDP_WriteProperty(ui_list->properties, wd);
2703         }
2704 }
2705
2706 static void write_soops(WriteData *wd, SpaceOops *so)
2707 {
2708         BLI_mempool *ts = so->treestore;
2709
2710         if (ts) {
2711                 SpaceOops so_flat = *so;
2712
2713                 int elems = BLI_mempool_len(ts);
2714                 /* linearize mempool to array */
2715                 TreeStoreElem *data = elems ? BLI_mempool_as_arrayN(ts, "TreeStoreElem") : NULL;
2716
2717                 if (data) {
2718                         /* In this block we use the memory location of the treestore
2719                          * but _not_ its data, the addresses in this case are UUID's,
2720                          * since we can't rely on malloc giving us different values each time.
2721                          */
2722                         TreeStore ts_flat = {0};
2723
2724                         /* we know the treestore is at least as big as a pointer,
2725                          * so offsetting works to give us a UUID. */
2726                         void *data_addr = (void *)POINTER_OFFSET(ts, sizeof(void *));
2727
2728                         ts_flat.usedelem = elems;
2729                         ts_flat.totelem = elems;
2730                         ts_flat.data = data_addr;
2731
2732                         writestruct(wd, DATA, SpaceOops, 1, so);
2733
2734                         writestruct_at_address(wd, DATA, TreeStore, 1, ts, &ts_flat);
2735                         writestruct_at_address(wd, DATA, TreeStoreElem, elems, data_addr, data);
2736
2737                         MEM_freeN(data);
2738                 }
2739                 else {
2740                         so_flat.treestore = NULL;
2741                         writestruct_at_address(wd, DATA, SpaceOops, 1, so, &so_flat);
2742                 }
2743         }
2744         else {
2745                 writestruct(wd, DATA, SpaceOops, 1, so);
2746         }
2747 }
2748
2749 static void write_area_regions(WriteData *wd, ScrArea *area)
2750 {
2751         for (ARegion *region = area->regionbase.first; region; region = region->next) {
2752                 write_region(wd, region, area->spacetype);
2753
2754                 for (Panel *pa = region->panels.first; pa; pa = pa->next) {
2755                         writestruct(wd, DATA, Panel, 1, pa);
2756                 }
2757
2758                 for (PanelCategoryStack *pc_act = region->panels_category_active.first; pc_act; pc_act = pc_act->next) {
2759                         writestruct(wd, DATA, PanelCategoryStack, 1, pc_act);
2760                 }
2761
2762                 for (uiList *ui_list = region->ui_lists.first; ui_list; ui_list = ui_list->next) {
2763                         write_uilist(wd, ui_list);
2764                 }
2765
2766                 for (uiPreview *ui_preview = region->ui_previews.first; ui_preview; ui_preview = ui_preview->next) {
2767                         writestruct(wd, DATA, uiPreview, 1, ui_preview);
2768                 }
2769         }
2770
2771         for (SpaceLink *sl = area->spacedata.first; sl; sl = sl->next) {
2772                 for (ARegion *region = sl->regionbase.first; region; region = region->next) {
2773                         write_region(wd, region, sl->spacetype);
2774                 }
2775
2776                 if (sl->spacetype == SPACE_VIEW3D) {
2777                         View3D *v3d = (View3D *)sl;
2778                         writestruct(wd, DATA, View3D, 1, v3d);
2779
2780                         if (v3d->localvd) {
2781                                 writestruct(wd, DATA, View3D, 1, v3d->localvd);
2782                         }
2783
2784                         if (v3d->fx_settings.ssao) {
2785                                 writestruct(wd, DATA, GPUSSAOSettings, 1, v3d->fx_settings.ssao);
2786                         }
2787                         if (v3d->fx_settings.dof) {
2788                                 writestruct(wd, DATA, GPUDOFSettings, 1, v3d->fx_settings.dof);
2789                         }
2790                 }
2791                 else if (sl->spacetype == SPACE_IPO) {
2792                         SpaceIpo *sipo = (SpaceIpo *)sl;
2793                         ListBase tmpGhosts = sipo->ghostCurves;
2794
2795                         /* temporarily disable ghost curves when saving */
2796                         sipo->ghostCurves.first = sipo->ghostCurves.last = NULL;
2797
2798                         writestruct(wd, DATA, SpaceIpo, 1, sl);
2799                         if (sipo->ads) {
2800                                 writestruct(wd, DATA, bDopeSheet, 1, sipo->ads);
2801                         }
2802
2803                         /* reenable ghost curves */
2804                         sipo->ghostCurves = tmpGhosts;
2805                 }
2806                 else if (sl->spacetype == SPACE_BUTS) {
2807                         writestruct(wd, DATA, SpaceButs, 1, sl);
2808                 }
2809                 else if (sl->spacetype == SPACE_FILE) {
2810                         SpaceFile *sfile = (SpaceFile *)sl;
2811
2812                         writestruct(wd, DATA, SpaceFile, 1, sl);
2813                         if (sfile->params) {
2814                                 writestruct(wd, DATA, FileSelectParams, 1, sfile->params);
2815                         }
2816                 }
2817                 else if (sl->spacetype == SPACE_SEQ) {
2818                         writestruct(wd, DATA, SpaceSeq, 1, sl);
2819                 }
2820                 else if (sl->spacetype == SPACE_OUTLINER) {
2821                         SpaceOops *so = (SpaceOops *)sl;
2822                         write_soops(wd, so);
2823                 }
2824                 else if (sl->spacetype == SPACE_IMAGE) {
2825                         writestruct(wd, DATA, SpaceImage, 1, sl);
2826                 }
2827                 else if (sl->spacetype == SPACE_TEXT) {
2828                         writestruct(wd, DATA, SpaceText, 1, sl);
2829                 }
2830                 else if (sl->spacetype == SPACE_SCRIPT) {
2831                         SpaceScript *scr = (SpaceScript *)sl;
2832                         scr->but_refs = NULL;
2833                         writestruct(wd, DATA, SpaceScript, 1, sl);
2834                 }
2835                 else if (sl->spacetype == SPACE_ACTION) {
2836                         writestruct(wd, DATA, SpaceAction, 1, sl);
2837                 }
2838                 else if (sl->spacetype == SPACE_NLA) {
2839                         SpaceNla *snla = (SpaceNla *)sl;
2840
2841                         writestruct(wd, DATA, SpaceNla, 1, snla);
2842                         if (snla->ads) {
2843                                 writestruct(wd, DATA, bDopeSheet, 1, snla->ads);
2844                         }
2845                 }
2846                 else if (sl->spacetype == SPACE_NODE) {
2847                         SpaceNode *snode = (SpaceNode *)sl;
2848                         bNodeTreePath *path;
2849                         writestruct(wd, DATA, SpaceNode, 1, snode);
2850
2851                         for (path = snode->treepath.first; path; path = path->next) {
2852                                 writestruct(wd, DATA, bNodeTreePath, 1, path);
2853                         }
2854                 }
2855                 else if (sl->spacetype == SPACE_CONSOLE) {
2856                         SpaceConsole *con = (SpaceConsole *)sl;
2857                         ConsoleLine *cl;
2858
2859                         for (cl = con->history.first; cl; cl = cl->next) {
2860                                 /* 'len_alloc' is invalid on write, set from 'len' on read */
2861                                 writestruct(wd, DATA, ConsoleLine, 1, cl);
2862                                 writedata(wd, DATA, cl->len + 1, cl->line);
2863                         }
2864                         writestruct(wd, DATA, SpaceConsole, 1, sl);
2865                 }
2866 #ifdef WITH_TOPBAR_WRITING
2867                 else if (sl->spacetype == SPACE_TOPBAR) {
2868                         writestruct(wd, DATA, SpaceTopBar, 1, sl);
2869                 }
2870 #endif
2871                 else if (sl->spacetype == SPACE_USERPREF) {
2872                         writestruct(wd, DATA, SpaceUserPref, 1, sl);
2873                 }
2874                 else if (sl->spacetype == SPACE_CLIP) {
2875                         writestruct(wd, DATA, SpaceClip, 1, sl);
2876                 }
2877                 else if (sl->spacetype == SPACE_INFO) {
2878                         writestruct(wd, DATA, SpaceInfo, 1, sl);
2879                 }
2880         }
2881 }
2882
2883 static void write_area_map(WriteData *wd, ScrAreaMap *area_map)
2884 {
2885         writelist(wd, DATA, ScrVert, &area_map->vertbase);
2886         writelist(wd, DATA, ScrEdge, &area_map->edgebase);
2887         for (ScrArea *area = area_map->areabase.first; area; area = area->next) {
2888                 area->butspacetype = area->spacetype; /* Just for compatibility, will be reset below. */
2889
2890                 writestruct(wd, DATA, ScrArea, 1, area);
2891
2892 #ifdef WITH_TOPBAR_WRITING
2893                 writestruct(wd, DATA, ScrGlobalAreaData, 1, area->global);
2894 #endif
2895
2896                 write_area_regions(wd, area);
2897
2898                 area->butspacetype = SPACE_EMPTY; /* Unset again, was changed above. */
2899         }
2900 }
2901
2902 static void write_windowmanager(WriteData *wd, wmWindowManager *wm)
2903 {
2904         writestruct(wd, ID_WM, wmWindowManager, 1, wm);
2905         write_iddata(wd, &wm->id);
2906
2907         for (wmWindow *win = wm->windows.first; win; win = win->next) {
2908 #ifndef WITH_TOPBAR_WRITING
2909                 /* Don't write global areas yet, while we make changes to them. */
2910                 ScrAreaMap global_areas = win->global_areas;
2911                 memset(&win->global_areas, 0, sizeof(win->global_areas));
2912 #endif
2913
2914                 /* update deprecated screen member (for so loading in 2.7x uses the correct screen) */
2915                 win->screen = BKE_workspace_active_screen_get(win->workspace_hook);
2916
2917                 writestruct(wd, DATA, wmWindow, 1, win);
2918                 writestruct(wd, DATA, WorkSpaceInstanceHook, 1, win->workspace_hook);
2919                 writestruct(wd, DATA, Stereo3dFormat, 1, win->stereo3d_format);
2920
2921 #ifdef WITH_TOPBAR_WRITING
2922                 write_area_map(wd, &win->global_areas);
2923 #else
2924                 win->global_areas = global_areas;
2925 #endif
2926
2927                 /* data is written, clear deprecated data again */
2928                 win->screen = NULL;
2929         }
2930 }
2931
2932 static void write_screen(WriteData *wd, bScreen *sc)
2933 {
2934         /* write LibData */
2935         /* in 2.50+ files, the file identifier for screens is patched, forward compatibility */
2936         writestruct(wd, ID_SCRN, bScreen, 1, sc);
2937         write_iddata(wd, &sc->id);
2938
2939         write_previews(wd, sc->preview);
2940
2941         /* direct data */
2942         write_area_map(wd, AREAMAP_FROM_SCREEN(sc));
2943 }
2944
2945 static void write_bone(WriteData *wd, Bone *bone)
2946 {
2947         /* PATCH for upward compatibility after 2.37+ armature recode */
2948         bone->size[0] = bone->size[1] = bone->size[2] = 1.0f;
2949
2950         /* Write this bone */
2951         writestruct(wd, DATA, Bone, 1, bone);
2952
2953         /* Write ID Properties -- and copy this comment EXACTLY for easy finding
2954          * of library blocks that implement this.*/
2955         if (bone->prop) {
2956                 IDP_WriteProperty(bone->prop, wd);
2957         }
2958
2959         /* Write Children */
2960         for (Bone *cbone = bone->childbase.first; cbone; cbone = cbone->next) {
2961                 write_bone(wd, cbone);
2962         }
2963 }
2964
2965 static void write_armature(WriteData *wd, bArmature *arm)
2966 {
2967         if (arm->id.us > 0 || wd->use_memfile) {
2968                 writestruct(wd, ID_AR, bArmature, 1, arm);
2969                 write_iddata(wd, &arm->id);
2970
2971                 if (arm->adt) {
2972                         write_animdata(wd, arm->adt);
2973                 }
2974
2975                 /* Direct data */
2976                 for (Bone *bone = arm->bonebase.first; bone; bone = bone->next) {
2977                         write_bone(wd, bone);
2978                 }
2979         }
2980 }
2981
2982 static void write_text(WriteData *wd, Text *text)
2983 {
2984         if ((text->flags & TXT_ISMEM) && (text->flags & TXT_ISEXT)) {
2985                 text->flags &= ~TXT_ISEXT;
2986         }
2987
2988         /* write LibData */
2989         writestruct(wd, ID_TXT, Text, 1, text);
2990         write_iddata(wd, &text->id);
2991
2992         if (text->name) {
2993                 writedata(wd, DATA, strlen(text->name) + 1, text->name);
2994         }
2995
2996         if (!(text->flags & TXT_ISEXT)) {
2997                 /* now write the text data, in two steps for optimization in the readfunction */
2998                 for (TextLine *tmp = text->lines.first; tmp; tmp = tmp->next) {
2999                         writestruct(wd, DATA, TextLine, 1, tmp);
3000                 }
3001
3002                 for (TextLine *tmp = text->lines.first; tmp; tmp = tmp->next) {
3003                         writedata(wd, DATA, tmp->len + 1, tmp->line);
3004                 }
3005         }
3006 }
3007
3008 static void write_speaker(WriteData *wd, Speaker *spk)
3009 {
3010         if (spk->id.us > 0 || wd->use_memfile) {
3011                 /* write LibData */
3012                 writestruct(wd, ID_SPK, Speaker, 1, spk);
3013                 write_iddata(wd, &spk->id);
3014
3015                 if (spk->adt) {
3016                         write_animdata(wd, spk->adt);
3017                 }
3018         }
3019 }
3020
3021 static void write_sound(WriteData *wd, bSound *sound)
3022 {
3023         if (sound->id.us > 0 || wd->use_memfile) {
3024                 /* write LibData */
3025                 writestruct(wd, ID_SO, bSound, 1, sound);
3026                 write_iddata(wd, &sound->id);
3027
3028                 if (sound->packedfile) {
3029                         PackedFile *pf = sound->packedfile;
3030                         writestruct(wd, DATA, PackedFile, 1, pf);
3031                         writedata(wd, DATA, pf->size, pf->data);
3032                 }
3033         }
3034 }
3035
3036 static void write_probe(WriteData *wd, LightProbe *prb)
3037 {
3038         if (prb->id.us > 0 || wd->use_memfile) {
3039                 /* write LibData */
3040                 writestruct(wd, ID_LP, LightProbe, 1, prb);
3041                 write_iddata(wd, &prb->id);
3042
3043                 if (prb->adt) {
3044                         write_animdata(wd, prb->adt);
3045                 }
3046         }
3047 }
3048
3049 static void write_group(WriteData *wd, Group *group)
3050 {
3051         if (group->id.us > 0 || wd->use_memfile) {
3052                 /* write LibData */
3053                 writestruct(wd, ID_GR, Group, 1, group);
3054                 write_iddata(wd, &group->id);
3055
3056                 write_previews(wd, group->preview);
3057                 write_scene_collection(wd, group->collection);
3058                 write_view_layer(wd, group->view_layer);
3059         }
3060 }
3061
3062 static void write_nodetree(WriteData *wd, bNodeTree *ntree)
3063 {
3064         if (ntree->id.us > 0 || wd->use_memfile) {
3065                 writestruct(wd, ID_NT, bNodeTree, 1, ntree);
3066                 /* Note that trees directly used by other IDs (materials etc.) are not 'real' ID, they cannot
3067                  * be linked, etc., so we write actual id data here only, for 'real' ID trees. */
3068                 write_iddata(wd, &ntree->id);
3069
3070                 write_nodetree_nolib(wd, ntree);
3071         }
3072 }
3073
3074 #ifdef USE_NODE_COMPAT_CUSTOMNODES
3075 static void customnodes_add_deprecated_data(Main *mainvar)
3076 {
3077         FOREACH_NODETREE(mainvar, ntree, id) {
3078                 bNodeLink *link, *last_link = ntree->links.last;
3079
3080                 /* only do this for node groups */
3081                 if (id != &ntree->id) {
3082                         continue;
3083                 }
3084
3085                 /* Forward compatibility for group nodes: add links to node tree interface sockets.
3086                  * These links are invalid by new rules (missing node pointer)!
3087                  * They will be removed again in customnodes_free_deprecated_data,
3088                  * cannot do this directly lest bNodeLink pointer mapping becomes ambiguous.
3089                  * When loading files with such links in a new Blender version
3090                  * they will be removed as well.
3091                  */
3092                 for (link = ntree->links.first; link; link = link->next) {
3093                         bNode *fromnode = link->fromnode, *tonode = link->tonode;
3094                         bNodeSocket *fromsock = link->fromsock, *tosock = link->tosock;
3095
3096                         /* check both sides of the link, to handle direct input-to-output links */
3097                         if (fromnode->type == NODE_GROUP_INPUT) {
3098                                 fromnode = NULL;
3099                                 fromsock = ntreeFindSocketInterface(ntree, SOCK_IN, fromsock->identifier);
3100                         }
3101                         /* only the active output node defines links */
3102                         if (tonode->type == NODE_GROUP_OUTPUT && (tonode->flag & NODE_DO_OUTPUT)) {
3103                                 tonode = NULL;
3104                                 tosock = ntreeFindSocketInterface(ntree, SOCK_OUT, tosock->identifier);
3105                         }
3106
3107                         if (!fromnode || !tonode) {
3108               &nb