source/blender/blenkernel/intern/material.c

   1
   2 /*  material.c
   3  *
   4  *
   5  * $Id$
   6  *
   7  * ***** BEGIN GPL LICENSE BLOCK *****
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22  *
  23  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  24  * All rights reserved.
  25  *
  26  * The Original Code is: all of this file.
  27  *
  28  * Contributor(s): none yet.
  29  *
  30  * ***** END GPL LICENSE BLOCK *****
  31  */
  32
  33 #include <string.h>
  34 #include <math.h>
  35
  36 #include "MEM_guardedalloc.h"
  37
  38 #include "DNA_curve_types.h"
  39 #include "DNA_material_types.h"
  40 #include "DNA_mesh_types.h"
  41 #include "DNA_meta_types.h"
  42 #include "DNA_node_types.h"
  43 #include "DNA_object_types.h"
  44 #include "DNA_scene_types.h"
  45 #include "DNA_texture_types.h"
  46 #include "DNA_userdef_types.h"
  47
  48 #include "BLI_blenlib.h"
  49 #include "BLI_arithb.h"
  50
  51 #include "BKE_animsys.h"
  52 #include "BKE_blender.h"
  53 #include "BKE_displist.h"
  54 #include "BKE_global.h"
  55 #include "BKE_icons.h"
  56 #include "BKE_library.h"
  57 #include "BKE_main.h"
  58 #include "BKE_material.h"
  59 #include "BKE_mesh.h"
  60 #include "BKE_node.h"
  61 #include "BKE_utildefines.h"
  62
  63 #ifndef DISABLE_PYTHON
  64 #include "BPY_extern.h"
  65 #endif
  66
  67 #include "GPU_material.h"
  68
  69 /* used in UI and render */
  70 Material defmaterial;
  71
  72 /* called on startup, creator.c */
  73 void init_def_material(void)
  74 {
  75         init_material(&defmaterial);
  76 }
  77
  78 /* not material itself */
  79 void free_material(Material *ma)
  80 {
  81         MTex *mtex;
  82         int a;
  83
  84 #ifndef DISABLE_PYTHON
  85         BPY_free_scriptlink(&ma->scriptlink);
  86 #endif
  87
  88         for(a=0; a<MAX_MTEX; a++) {
  89                 mtex= ma->mtex[a];
  90                 if(mtex && mtex->tex) mtex->tex->id.us--;
  91                 if(mtex) MEM_freeN(mtex);
  92         }
  93
  94         if(ma->ramp_col) MEM_freeN(ma->ramp_col);
  95         if(ma->ramp_spec) MEM_freeN(ma->ramp_spec);
  96
  97         BKE_free_animdata((ID *)ma);
  98
  99         BKE_previewimg_free(&ma->preview);
 100         BKE_icon_delete((struct ID*)ma);
 101         ma->id.icon_id = 0;
 102
 103         /* is no lib link block, but material extension */
 104         if(ma->nodetree) {
 105                 ntreeFreeTree(ma->nodetree);
 106                 MEM_freeN(ma->nodetree);
 107         }
 108
 109         if(ma->gpumaterial.first)
 110                 GPU_material_free(ma);
 111 }
 112
 113 void init_material(Material *ma)
 114 {
 115         ma->r= ma->g= ma->b= ma->ref= 0.8;
 116         ma->specr= ma->specg= ma->specb= 1.0;
 117         ma->mirr= ma->mirg= ma->mirb= 1.0;
 118         ma->spectra= 1.0;
 119         ma->amb= 0.5;
 120         ma->alpha= 1.0;
 121         ma->spec= ma->hasize= 0.5;
 122         ma->har= 50;
 123         ma->starc= ma->ringc= 4;
 124         ma->linec= 12;
 125         ma->flarec= 1;
 126         ma->flaresize= ma->subsize= 1.0;
 127         ma->flareboost= 1;
 128         ma->seed2= 6;
 129         ma->friction= 0.5;
 130         ma->refrac= 4.0;
 131         ma->roughness= 0.5;
 132         ma->param[0]= 0.5;
 133         ma->param[1]= 0.1;
 134         ma->param[2]= 0.5;
 135         ma->param[3]= 0.1;
 136         ma->rms= 0.1;
 137         ma->darkness= 1.0;
 138
 139         ma->strand_sta= ma->strand_end= 1.0f;
 140
 141         ma->ang= 1.0;
 142         ma->ray_depth= 2;
 143         ma->ray_depth_tra= 2;
 144         ma->fresnel_mir= 0.0;
 145         ma->fresnel_tra= 0.0;
 146         ma->fresnel_tra_i= 1.25;
 147         ma->fresnel_mir_i= 1.25;
 148         ma->tx_limit= 0.0;
 149         ma->tx_falloff= 1.0;
 150         ma->shad_alpha= 1.0f;
 151
 152         ma->gloss_mir = ma->gloss_tra= 1.0;
 153         ma->samp_gloss_mir = ma->samp_gloss_tra= 18;
 154         ma->adapt_thresh_mir = ma->adapt_thresh_tra = 0.005;
 155         ma->dist_mir = 0.0;
 156         ma->fadeto_mir = MA_RAYMIR_FADETOSKY;
 157
 158         ma->rampfac_col= 1.0;
 159         ma->rampfac_spec= 1.0;
 160         ma->pr_lamp= 3;                 /* two lamps, is bits */
 161         ma->pr_type= MA_SPHERE;
 162
 163         ma->sss_radius[0]= 1.0f;
 164         ma->sss_radius[1]= 1.0f;
 165         ma->sss_radius[2]= 1.0f;
 166         ma->sss_col[0]= 0.8f;
 167         ma->sss_col[1]= 0.8f;
 168         ma->sss_col[2]= 0.8f;
 169         ma->sss_error= 0.05f;
 170         ma->sss_scale= 0.1f;
 171         ma->sss_ior= 1.3f;
 172         ma->sss_colfac= 1.0f;
 173         ma->sss_texfac= 0.0f;
 174         ma->sss_front= 1.0f;
 175         ma->sss_back= 1.0f;
 176
 177         ma->mode= MA_TRACEBLE|MA_SHADBUF|MA_SHADOW|MA_RADIO|MA_RAYBIAS|MA_TANGENT_STR;
 178
 179         ma->preview = NULL;
 180 }
 181
 182 Material *add_material(char *name)
 183 {
 184         Material *ma;
 185
 186         ma= alloc_libblock(&G.main->mat, ID_MA, name);
 187
 188         init_material(ma);
 189
 190         return ma;
 191 }
 192
 193 Material *copy_material(Material *ma)
 194 {
 195         Material *man;
 196         int a;
 197
 198         man= copy_libblock(ma);
 199
 200 #if 0 // XXX old animation system
 201         id_us_plus((ID *)man->ipo);
 202 #endif // XXX old animation system
 203         id_us_plus((ID *)man->group);
 204
 205
 206         for(a=0; a<MAX_MTEX; a++) {
 207                 if(ma->mtex[a]) {
 208                         man->mtex[a]= MEM_mallocN(sizeof(MTex), "copymaterial");
 209                         memcpy(man->mtex[a], ma->mtex[a], sizeof(MTex));
 210                         id_us_plus((ID *)man->mtex[a]->tex);
 211                 }
 212         }
 213
 214 #ifndef DISABLE_PYTHON
 215         BPY_copy_scriptlink(&ma->scriptlink);
 216 #endif
 217
 218         if(ma->ramp_col) man->ramp_col= MEM_dupallocN(ma->ramp_col);
 219         if(ma->ramp_spec) man->ramp_spec= MEM_dupallocN(ma->ramp_spec);
 220
 221         if (ma->preview) man->preview = BKE_previewimg_copy(ma->preview);
 222
 223         if(ma->nodetree) {
 224                 man->nodetree= ntreeCopyTree(ma->nodetree, 0);  /* 0 == full new tree */
 225         }
 226
 227         man->gpumaterial.first= man->gpumaterial.last= NULL;
 228
 229         return man;
 230 }
 231
 232 void make_local_material(Material *ma)
 233 {
 234         Object *ob;
 235         Mesh *me;
 236         Curve *cu;
 237         MetaBall *mb;
 238         Material *man;
 239         int a, local=0, lib=0;
 240
 241         /* - only lib users: do nothing
 242             * - only local users: set flag
 243             * - mixed: make copy
 244             */
 245
 246         if(ma->id.lib==0) return;
 247         if(ma->id.us==1) {
 248                 ma->id.lib= 0;
 249                 ma->id.flag= LIB_LOCAL;
 250                 new_id(0, (ID *)ma, 0);
 251                 for(a=0; a<MAX_MTEX; a++) {
 252                         if(ma->mtex[a]) id_lib_extern((ID *)ma->mtex[a]->tex);
 253                 }
 254
 255                 return;
 256         }
 257
 258         /* test objects */
 259         ob= G.main->object.first;
 260         while(ob) {
 261                 if(ob->mat) {
 262                         for(a=0; a<ob->totcol; a++) {
 263                                 if(ob->mat[a]==ma) {
 264                                         if(ob->id.lib) lib= 1;
 265                                         else local= 1;
 266                                 }
 267                         }
 268                 }
 269                 ob= ob->id.next;
 270         }
 271         /* test meshes */
 272         me= G.main->mesh.first;
 273         while(me) {
 274                 if(me->mat) {
 275                         for(a=0; a<me->totcol; a++) {
 276                                 if(me->mat[a]==ma) {
 277                                         if(me->id.lib) lib= 1;
 278                                         else local= 1;
 279                                 }
 280                         }
 281                 }
 282                 me= me->id.next;
 283         }
 284         /* test curves */
 285         cu= G.main->curve.first;
 286         while(cu) {
 287                 if(cu->mat) {
 288                         for(a=0; a<cu->totcol; a++) {
 289                                 if(cu->mat[a]==ma) {
 290                                         if(cu->id.lib) lib= 1;
 291                                         else local= 1;
 292                                 }
 293                         }
 294                 }
 295                 cu= cu->id.next;
 296         }
 297         /* test mballs */
 298         mb= G.main->mball.first;
 299         while(mb) {
 300                 if(mb->mat) {
 301                         for(a=0; a<mb->totcol; a++) {
 302                                 if(mb->mat[a]==ma) {
 303                                         if(mb->id.lib) lib= 1;
 304                                         else local= 1;
 305                                 }
 306                         }
 307                 }
 308                 mb= mb->id.next;
 309         }
 310
 311         if(local && lib==0) {
 312                 ma->id.lib= 0;
 313                 ma->id.flag= LIB_LOCAL;
 314
 315                 for(a=0; a<MAX_MTEX; a++) {
 316                         if(ma->mtex[a]) id_lib_extern((ID *)ma->mtex[a]->tex);
 317                 }
 318
 319                 new_id(0, (ID *)ma, 0);
 320         }
 321         else if(local && lib) {
 322
 323                 man= copy_material(ma);
 324                 man->id.us= 0;
 325
 326                 /* do objects */
 327                 ob= G.main->object.first;
 328                 while(ob) {
 329                         if(ob->mat) {
 330                                 for(a=0; a<ob->totcol; a++) {
 331                                         if(ob->mat[a]==ma) {
 332                                                 if(ob->id.lib==0) {
 333                                                         ob->mat[a]= man;
 334                                                         man->id.us++;
 335                                                         ma->id.us--;
 336                                                 }
 337                                         }
 338                                 }
 339                         }
 340                         ob= ob->id.next;
 341                 }
 342                 /* do meshes */
 343                 me= G.main->mesh.first;
 344                 while(me) {
 345                         if(me->mat) {
 346                                 for(a=0; a<me->totcol; a++) {
 347                                         if(me->mat[a]==ma) {
 348                                                 if(me->id.lib==0) {
 349                                                         me->mat[a]= man;
 350                                                         man->id.us++;
 351                                                         ma->id.us--;
 352                                                 }
 353                                         }
 354                                 }
 355                         }
 356                         me= me->id.next;
 357                 }
 358                 /* do curves */
 359                 cu= G.main->curve.first;
 360                 while(cu) {
 361                         if(cu->mat) {
 362                                 for(a=0; a<cu->totcol; a++) {
 363                                         if(cu->mat[a]==ma) {
 364                                                 if(cu->id.lib==0) {
 365                                                         cu->mat[a]= man;
 366                                                         man->id.us++;
 367                                                         ma->id.us--;
 368                                                 }
 369                                         }
 370                                 }
 371                         }
 372                         cu= cu->id.next;
 373                 }
 374                 /* do mballs */
 375                 mb= G.main->mball.first;
 376                 while(mb) {
 377                         if(mb->mat) {
 378                                 for(a=0; a<mb->totcol; a++) {
 379                                         if(mb->mat[a]==ma) {
 380                                                 if(mb->id.lib==0) {
 381                                                         mb->mat[a]= man;
 382                                                         man->id.us++;
 383                                                         ma->id.us--;
 384                                                 }
 385                                         }
 386                                 }
 387                         }
 388                         mb= mb->id.next;
 389                 }
 390         }
 391 }
 392
 393 Material ***give_matarar(Object *ob)
 394 {
 395         Mesh *me;
 396         Curve *cu;
 397         MetaBall *mb;
 398
 399         if(ob->type==OB_MESH) {
 400                 me= ob->data;
 401                 return &(me->mat);
 402         }
 403         else if ELEM3(ob->type, OB_CURVE, OB_FONT, OB_SURF) {
 404                 cu= ob->data;
 405                 return &(cu->mat);
 406         }
 407         else if(ob->type==OB_MBALL) {
 408                 mb= ob->data;
 409                 return &(mb->mat);
 410         }
 411         return NULL;
 412 }
 413
 414 short *give_totcolp(Object *ob)
 415 {
 416         Mesh *me;
 417         Curve *cu;
 418         MetaBall *mb;
 419
 420         if(ob->type==OB_MESH) {
 421                 me= ob->data;
 422                 return &(me->totcol);
 423         }
 424         else if ELEM3(ob->type, OB_CURVE, OB_FONT, OB_SURF) {
 425                 cu= ob->data;
 426                 return &(cu->totcol);
 427         }
 428         else if(ob->type==OB_MBALL) {
 429                 mb= ob->data;
 430                 return &(mb->totcol);
 431         }
 432         return NULL;
 433 }
 434
 435 Material *give_current_material(Object *ob, int act)
 436 {
 437         Material ***matarar, *ma;
 438         short *totcolp;
 439
 440         if(ob==NULL) return NULL;
 441
 442         /* if object cannot have material, totcolp==NULL */
 443         totcolp= give_totcolp(ob);
 444         if(totcolp==NULL || ob->totcol==0) return NULL;
 445
 446         if(act>ob->totcol) act= ob->totcol;
 447         else if(act<=0) act= 1;
 448
 449         if(ob->matbits[act-1]) {        /* in object */
 450                 ma= ob->mat[act-1];
 451         }
 452         else {                                                          /* in data */
 453
 454                 /* check for inconsistancy */
 455                 if(*totcolp < ob->totcol)
 456                         ob->totcol= *totcolp;
 457                 if(act>ob->totcol) act= ob->totcol;
 458
 459                 matarar= give_matarar(ob);
 460
 461                 if(matarar && *matarar) ma= (*matarar)[act-1];
 462                 else ma= 0;
 463
 464         }
 465
 466         return ma;
 467 }
 468
 469 ID *material_from(Object *ob, int act)
 470 {
 471
 472         if(ob==0) return 0;
 473
 474         if(ob->totcol==0) return ob->data;
 475         if(act==0) act= 1;
 476
 477         if(ob->matbits[act-1]) return (ID *)ob;
 478         else return ob->data;
 479 }
 480
 481 /* GS reads the memory pointed at in a specific ordering. There are,
 482  * however two definitions for it. I have jotted them down here, both,
 483  * but I think the first one is actually used. The thing is that
 484  * big-endian systems might read this the wrong way round. OTOH, we
 485  * constructed the IDs that are read out with this macro explicitly as
 486  * well. I expect we'll sort it out soon... */
 487
 488 /* from blendef: */
 489 #define GS(a)   (*((short *)(a)))
 490
 491 /* from misc_util: flip the bytes from x  */
 492 /*  #define GS(x) (((unsigned char *)(x))[0] << 8 | ((unsigned char *)(x))[1]) */
 493
 494 void test_object_materials(ID *id)
 495 {
 496         /* make the ob mat-array same size as 'ob->data' mat-array */
 497         Object *ob;
 498         Mesh *me;
 499         Curve *cu;
 500         MetaBall *mb;
 501         Material **newmatar;
 502         char *newmatbits;
 503         int totcol=0;
 504
 505         if(id==0) return;
 506
 507         if( GS(id->name)==ID_ME ) {
 508                 me= (Mesh *)id;
 509                 totcol= me->totcol;
 510         }
 511         else if( GS(id->name)==ID_CU ) {
 512                 cu= (Curve *)id;
 513                 totcol= cu->totcol;
 514         }
 515         else if( GS(id->name)==ID_MB ) {
 516                 mb= (MetaBall *)id;
 517                 totcol= mb->totcol;
 518         }
 519         else return;
 520
 521         ob= G.main->object.first;
 522         while(ob) {
 523
 524                 if(ob->data==id) {
 525
 526                         if(totcol==0) {
 527                                 if(ob->totcol) {
 528                                         MEM_freeN(ob->mat);
 529                                         MEM_freeN(ob->matbits);
 530                                         ob->mat= NULL;
 531                                         ob->matbits= NULL;
 532                                 }
 533                         }
 534                         else if(ob->totcol<totcol) {
 535                                 newmatar= MEM_callocN(sizeof(void *)*totcol, "newmatar");
 536                                 newmatbits= MEM_callocN(sizeof(char)*totcol, "newmatbits");
 537                                 if(ob->totcol) {
 538                                         memcpy(newmatar, ob->mat, sizeof(void *)*ob->totcol);
 539                                         memcpy(newmatbits, ob->matbits, sizeof(char)*ob->totcol);
 540                                         MEM_freeN(ob->mat);
 541                                         MEM_freeN(ob->matbits);
 542                                 }
 543                                 ob->mat= newmatar;
 544                                 ob->matbits= newmatbits;
 545                         }
 546                         ob->totcol= totcol;
 547                         if(ob->totcol && ob->actcol==0) ob->actcol= 1;
 548                         if(ob->actcol>ob->totcol) ob->actcol= ob->totcol;
 549                 }
 550                 ob= ob->id.next;
 551         }
 552 }
 553
 554
 555 void assign_material(Object *ob, Material *ma, int act)
 556 {
 557         Material *mao, **matar, ***matarar;
 558         char *matbits;
 559         short *totcolp;
 560
 561         if(act>MAXMAT) return;
 562         if(act<1) act= 1;
 563
 564         /* test arraylens */
 565
 566         totcolp= give_totcolp(ob);
 567         matarar= give_matarar(ob);
 568
 569         if(totcolp==0 || matarar==0) return;
 570
 571         if(act > *totcolp) {
 572                 matar= MEM_callocN(sizeof(void *)*act, "matarray1");
 573
 574                 if(*totcolp) {
 575                         memcpy(matar, *matarar, sizeof(void *)*(*totcolp));
 576                         MEM_freeN(*matarar);
 577                 }
 578
 579                 *matarar= matar;
 580                 *totcolp= act;
 581         }
 582
 583         if(act > ob->totcol) {
 584                 matar= MEM_callocN(sizeof(void *)*act, "matarray2");
 585                 matbits= MEM_callocN(sizeof(char)*act, "matbits1");
 586                 if( ob->totcol) {
 587                         memcpy(matar, ob->mat, sizeof(void *)*( ob->totcol ));
 588                         memcpy(matbits, ob->matbits, sizeof(char)*(*totcolp));
 589                         MEM_freeN(ob->mat);
 590                         MEM_freeN(ob->matbits);
 591                 }
 592                 ob->mat= matar;
 593                 ob->matbits= matbits;
 594                 ob->totcol= act;
 595
 596                 /* copy object/mesh linking, or assign based on userpref */
 597                 if(ob->actcol)
 598                         ob->matbits[act-1]= ob->matbits[ob->actcol-1];
 599                 else
 600                         ob->matbits[act-1]= (U.flag & USER_MAT_ON_OB)? 1: 0;
 601         }
 602
 603         /* do it */
 604
 605         if(ob->matbits[act-1]) {        /* in object */
 606                 mao= ob->mat[act-1];
 607                 if(mao) mao->id.us--;
 608                 ob->mat[act-1]= ma;
 609         }
 610         else {  /* in data */
 611                 mao= (*matarar)[act-1];
 612                 if(mao) mao->id.us--;
 613                 (*matarar)[act-1]= ma;
 614         }
 615
 616         id_us_plus((ID *)ma);
 617         test_object_materials(ob->data);
 618 }
 619
 620 int find_material_index(Object *ob, Material *ma)
 621 {
 622         Material ***matarar;
 623         short a, *totcolp;
 624
 625         if(ma==NULL) return 0;
 626
 627         totcolp= give_totcolp(ob);
 628         matarar= give_matarar(ob);
 629
 630         if(totcolp==NULL || matarar==NULL) return 0;
 631
 632         for(a=0; a<*totcolp; a++)
 633                 if((*matarar)[a]==ma)
 634                    break;
 635         if(a<*totcolp)
 636                 return a+1;
 637         return 0;
 638 }
 639
 640 void object_add_material_slot(Object *ob)
 641 {
 642         Material *ma;
 643
 644         if(ob==0) return;
 645         if(ob->totcol>=MAXMAT) return;
 646
 647         ma= give_current_material(ob, ob->actcol);
 648         if(ma==NULL)
 649                 ma= add_material("Material");
 650         else
 651                 ma= copy_material(ma);
 652
 653         ma->id.us= 0; /* eeh... */
 654
 655         assign_material(ob, ma, ob->totcol+1);
 656         ob->actcol= ob->totcol;
 657 }
 658
 659 static void do_init_render_material(Material *ma, int r_mode, float *amb)
 660 {
 661         MTex *mtex;
 662         int a, needuv=0, needtang=0;
 663
 664         if(ma->flarec==0) ma->flarec= 1;
 665
 666         /* add all texcoflags from mtex, texco and mapto were cleared in advance */
 667         for(a=0; a<MAX_MTEX; a++) {
 668
 669                 /* separate tex switching */
 670                 if(ma->septex & (1<<a)) continue;
 671
 672                 mtex= ma->mtex[a];
 673                 if(mtex && mtex->tex && (mtex->tex->type | (mtex->tex->use_nodes && mtex->tex->nodetree) )) {
 674
 675                         ma->texco |= mtex->texco;
 676                         ma->mapto |= mtex->mapto;
 677                         if(r_mode & R_OSA) {
 678                                 if ELEM3(mtex->tex->type, TEX_IMAGE, TEX_PLUGIN, TEX_ENVMAP) ma->texco |= TEXCO_OSA;
 679                         }
 680
 681                         if(ma->texco & (TEXCO_ORCO|TEXCO_REFL|TEXCO_NORM|TEXCO_STRAND|TEXCO_STRESS)) needuv= 1;
 682                         else if(ma->texco & (TEXCO_GLOB|TEXCO_UV|TEXCO_OBJECT|TEXCO_SPEED)) needuv= 1;
 683                         else if(ma->texco & (TEXCO_LAVECTOR|TEXCO_VIEW|TEXCO_STICKY)) needuv= 1;
 684
 685                         if((ma->mapto & MAP_NORM) && (mtex->normapspace == MTEX_NSPACE_TANGENT))
 686                                 needtang= 1;
 687                 }
 688         }
 689
 690         if(needtang) ma->mode |= MA_NORMAP_TANG;
 691         else ma->mode &= ~MA_NORMAP_TANG;
 692
 693         if(r_mode & R_RADIO)
 694                 if(ma->mode & MA_RADIO) needuv= 1;
 695
 696         if(ma->mode & (MA_VERTEXCOL|MA_VERTEXCOLP|MA_FACETEXTURE)) {
 697                 needuv= 1;
 698                 if(r_mode & R_OSA) ma->texco |= TEXCO_OSA;              /* for texfaces */
 699         }
 700         if(needuv) ma->texco |= NEED_UV;
 701
 702         /* since the raytracer doesnt recalc O structs for each ray, we have to preset them all */
 703         if(r_mode & R_RAYTRACE) {
 704                 if(ma->mode & (MA_RAYMIRROR|MA_RAYTRANSP|MA_SHADOW_TRA)) {
 705                         ma->texco |= NEED_UV|TEXCO_ORCO|TEXCO_REFL|TEXCO_NORM;
 706                         if(r_mode & R_OSA) ma->texco |= TEXCO_OSA;
 707                 }
 708         }
 709
 710         if(amb) {
 711                 ma->ambr= ma->amb*amb[0];
 712                 ma->ambg= ma->amb*amb[1];
 713                 ma->ambb= ma->amb*amb[2];
 714         }
 715         /* will become or-ed result of all node modes */
 716         ma->mode_l= ma->mode;
 717         ma->mode_l &= ~MA_SHLESS;
 718
 719         if(ma->strand_surfnor > 0.0f)
 720                 ma->mode_l |= MA_STR_SURFDIFF;
 721 }
 722
 723 static void init_render_nodetree(bNodeTree *ntree, Material *basemat, int r_mode, float *amb)
 724 {
 725         bNode *node;
 726
 727         for(node=ntree->nodes.first; node; node= node->next) {
 728                 if(node->id) {
 729                         if(GS(node->id->name)==ID_MA) {
 730                                 Material *ma= (Material *)node->id;
 731                                 if(ma!=basemat) {
 732                                         do_init_render_material(ma, r_mode, amb);
 733                                         basemat->texco |= ma->texco;
 734                                         basemat->mode_l |= ma->mode_l;
 735                                 }
 736                         }
 737                         else if(node->type==NODE_GROUP)
 738                                 init_render_nodetree((bNodeTree *)node->id, basemat, r_mode, amb);
 739                 }
 740         }
 741         /* parses the geom+tex nodes */
 742         ntreeShaderGetTexcoMode(ntree, r_mode, &basemat->texco, &basemat->mode_l);
 743 }
 744
 745 void init_render_material(Material *mat, int r_mode, float *amb)
 746 {
 747
 748         do_init_render_material(mat, r_mode, amb);
 749
 750         if(mat->nodetree && mat->use_nodes) {
 751                 init_render_nodetree(mat->nodetree, mat, r_mode, amb);
 752
 753                 ntreeBeginExecTree(mat->nodetree); /* has internal flag to detect it only does it once */
 754         }
 755 }
 756
 757 void init_render_materials(int r_mode, float *amb)
 758 {
 759         Material *ma;
 760
 761         /* clear these flags before going over materials, to make sure they
 762          * are cleared only once, otherwise node materials contained in other
 763          * node materials can go wrong */
 764         for(ma= G.main->mat.first; ma; ma= ma->id.next) {
 765                 if(ma->id.us) {
 766                         ma->texco= 0;
 767                         ma->mapto= 0;
 768                 }
 769         }
 770
 771         /* two steps, first initialize, then or the flags for layers */
 772         for(ma= G.main->mat.first; ma; ma= ma->id.next) {
 773                 /* is_used flag comes back in convertblender.c */
 774                 ma->flag &= ~MA_IS_USED;
 775                 if(ma->id.us)
 776                         init_render_material(ma, r_mode, amb);
 777         }
 778
 779         do_init_render_material(&defmaterial, r_mode, amb);
 780 }
 781
 782 /* only needed for nodes now */
 783 void end_render_material(Material *mat)
 784 {
 785         if(mat && mat->nodetree && mat->use_nodes)
 786                 ntreeEndExecTree(mat->nodetree); /* has internal flag to detect it only does it once */
 787 }
 788
 789 void end_render_materials(void)
 790 {
 791         Material *ma;
 792         for(ma= G.main->mat.first; ma; ma= ma->id.next)
 793                 if(ma->id.us)
 794                         end_render_material(ma);
 795 }
 796
 797 static int material_in_nodetree(bNodeTree *ntree, Material *mat)
 798 {
 799         bNode *node;
 800
 801         for(node=ntree->nodes.first; node; node= node->next) {
 802                 if(node->id && GS(node->id->name)==ID_MA) {
 803                         if(node->id==(ID*)mat)
 804                                 return 1;
 805                 }
 806                 else if(node->type==NODE_GROUP)
 807                         if(material_in_nodetree((bNodeTree*)node->id, mat))
 808                                 return 1;
 809         }
 810
 811         return 0;
 812 }
 813
 814 int material_in_material(Material *parmat, Material *mat)
 815 {
 816         if(parmat==mat)
 817                 return 1;
 818         else if(parmat->nodetree && parmat->use_nodes)
 819                 return material_in_nodetree(parmat->nodetree, mat);
 820         else
 821                 return 0;
 822 }
 823
 824 /* ****************** */
 825
 826 char colname_array[125][20]= {
 827 "Black","DarkRed","HalfRed","Red","Red",
 828 "DarkGreen","DarkOlive","Brown","Chocolate","OrangeRed",
 829 "HalfGreen","GreenOlive","DryOlive","Goldenrod","DarkOrange",
 830 "LightGreen","Chartreuse","YellowGreen","Yellow","Gold",
 831 "Green","LawnGreen","GreenYellow","LightOlive","Yellow",
 832 "DarkBlue","DarkPurple","HotPink","VioletPink","RedPink",
 833 "SlateGray","DarkGrey","PalePurple","IndianRed","Tomato",
 834 "SeaGreen","PaleGreen","GreenKhaki","LightBrown","LightSalmon",
 835 "SpringGreen","PaleGreen","MediumOlive","YellowBrown","LightGold",
 836 "LightGreen","LightGreen","LightGreen","GreenYellow","PaleYellow",
 837 "HalfBlue","DarkSky","HalfMagenta","VioletRed","DeepPink",
 838 "SteelBlue","SkyBlue","Orchid","LightHotPink","HotPink",
 839 "SeaGreen","SlateGray","MediumGrey","Burlywood","LightPink",
 840 "SpringGreen","Aquamarine","PaleGreen","Khaki","PaleOrange",
 841 "SpringGreen","SeaGreen","PaleGreen","PaleWhite","YellowWhite",
 842 "LightBlue","Purple","MediumOrchid","Magenta","Magenta",
 843 "RoyalBlue","SlateBlue","MediumOrchid","Orchid","Magenta",
 844 "DeepSkyBlue","LightSteelBlue","LightSkyBlue","Violet","LightPink",
 845 "Cyan","DarkTurquoise","SkyBlue","Grey","Snow",
 846 "Mint","Mint","Aquamarine","MintCream","Ivory",
 847 "Blue","Blue","DarkMagenta","DarkOrchid","Magenta",
 848 "SkyBlue","RoyalBlue","LightSlateBlue","MediumOrchid","Magenta",
 849 "DodgerBlue","SteelBlue","MediumPurple","PalePurple","Plum",
 850 "DeepSkyBlue","PaleBlue","LightSkyBlue","PalePurple","Thistle",
 851 "Cyan","ColdBlue","PaleTurquoise","GhostWhite","White"
 852 };
 853
 854 void automatname(Material *ma)
 855 {
 856         int nr, r, g, b;
 857         float ref;
 858
 859         if(ma==0) return;
 860         if(ma->mode & MA_SHLESS) ref= 1.0;
 861         else ref= ma->ref;
 862
 863         r= (int)(4.99*(ref*ma->r));
 864         g= (int)(4.99*(ref*ma->g));
 865         b= (int)(4.99*(ref*ma->b));
 866         nr= r + 5*g + 25*b;
 867         if(nr>124) nr= 124;
 868         new_id(&G.main->mat, (ID *)ma, colname_array[nr]);
 869
 870 }
 871
 872
 873 void object_remove_material_slot(Object *ob)
 874 {
 875         Material *mao, ***matarar;
 876         Object *obt;
 877         Curve *cu;
 878         Nurb *nu;
 879         short *totcolp;
 880         int a, actcol;
 881
 882         if(ob==NULL || ob->totcol==0) return;
 883
 884         /* take a mesh/curve/mball as starting point, remove 1 index,
 885          * AND with all objects that share the ob->data
 886          *
 887          * after that check indices in mesh/curve/mball!!!
 888          */
 889
 890         totcolp= give_totcolp(ob);
 891         matarar= give_matarar(ob);
 892
 893         /* we delete the actcol */
 894         if(ob->totcol) {
 895                 mao= (*matarar)[ob->actcol-1];
 896                 if(mao) mao->id.us--;
 897         }
 898
 899         for(a=ob->actcol; a<ob->totcol; a++)
 900                 (*matarar)[a-1]= (*matarar)[a];
 901         (*totcolp)--;
 902
 903         if(*totcolp==0) {
 904                 MEM_freeN(*matarar);
 905                 *matarar= 0;
 906         }
 907
 908         actcol= ob->actcol;
 909         obt= G.main->object.first;
 910         while(obt) {
 911
 912                 if(obt->data==ob->data) {
 913
 914                         /* WATCH IT: do not use actcol from ob or from obt (can become zero) */
 915                         mao= obt->mat[actcol-1];
 916                         if(mao) mao->id.us--;
 917
 918                         for(a=actcol; a<obt->totcol; a++) {
 919                                 obt->mat[a-1]= obt->mat[a];
 920                                 obt->matbits[a-1]= obt->matbits[a];
 921                         }
 922                         obt->totcol--;
 923                         if(obt->actcol > obt->totcol) obt->actcol= obt->totcol;
 924
 925                         if(obt->totcol==0) {
 926                                 MEM_freeN(obt->mat);
 927                                 MEM_freeN(obt->matbits);
 928                                 obt->mat= 0;
 929                                 obt->matbits= NULL;
 930                         }
 931                 }
 932                 obt= obt->id.next;
 933         }
 934
 935         /* check indices from mesh */
 936
 937         if(ob->type==OB_MESH) {
 938                 Mesh *me= get_mesh(ob);
 939                 mesh_delete_material_index(me, actcol-1);
 940                 freedisplist(&ob->disp);
 941         }
 942         else if ELEM(ob->type, OB_CURVE, OB_SURF) {
 943                 cu= ob->data;
 944                 nu= cu->nurb.first;
 945
 946                 while(nu) {
 947                         if(nu->mat_nr && nu->mat_nr>=actcol-1) {
 948                                 nu->mat_nr--;
 949                                 if (ob->type == OB_CURVE) nu->charidx--;
 950                         }
 951                         nu= nu->next;
 952                 }
 953                 freedisplist(&ob->disp);
 954         }
 955 }
 956
 957
 958 /* r g b = current value, col = new value, fac==0 is no change */
 959 /* if g==NULL, it only does r channel */
 960 void ramp_blend(int type, float *r, float *g, float *b, float fac, float *col)
 961 {
 962         float tmp, facm= 1.0-fac;
 963
 964         switch (type) {
 965                 case MA_RAMP_BLEND:
 966                         *r = facm*(*r) + fac*col[0];
 967                         if(g) {
 968                                 *g = facm*(*g) + fac*col[1];
 969                                 *b = facm*(*b) + fac*col[2];
 970                         }
 971                                 break;
 972                 case MA_RAMP_ADD:
 973                         *r += fac*col[0];
 974                         if(g) {
 975                                 *g += fac*col[1];
 976                                 *b += fac*col[2];
 977                         }
 978                                 break;
 979                 case MA_RAMP_MULT:
 980                         *r *= (facm + fac*col[0]);
 981                         if(g) {
 982                                 *g *= (facm + fac*col[1]);
 983                                 *b *= (facm + fac*col[2]);
 984                         }
 985                                 break;
 986                 case MA_RAMP_SCREEN:
 987                         *r = 1.0 - (facm + fac*(1.0 - col[0])) * (1.0 - *r);
 988                         if(g) {
 989                                 *g = 1.0 - (facm + fac*(1.0 - col[1])) * (1.0 - *g);
 990                                 *b = 1.0 - (facm + fac*(1.0 - col[2])) * (1.0 - *b);
 991                         }
 992                                 break;
 993                 case MA_RAMP_OVERLAY:
 994                         if(*r < 0.5f)
 995                                 *r *= (facm + 2.0f*fac*col[0]);
 996                         else
 997                                 *r = 1.0 - (facm + 2.0f*fac*(1.0 - col[0])) * (1.0 - *r);
 998                         if(g) {
 999                                 if(*g < 0.5f)
1000                                         *g *= (facm + 2.0f*fac*col[1]);
1001                                 else
1002                                         *g = 1.0 - (facm + 2.0f*fac*(1.0 - col[1])) * (1.0 - *g);
1003                                 if(*b < 0.5f)
1004                                         *b *= (facm + 2.0f*fac*col[2]);
1005                                 else
1006                                         *b = 1.0 - (facm + 2.0f*fac*(1.0 - col[2])) * (1.0 - *b);
1007                         }
1008                                 break;
1009                 case MA_RAMP_SUB:
1010                         *r -= fac*col[0];
1011                         if(g) {
1012                                 *g -= fac*col[1];
1013                                 *b -= fac*col[2];
1014                         }
1015                                 break;
1016                 case MA_RAMP_DIV:
1017                         if(col[0]!=0.0)
1018                                 *r = facm*(*r) + fac*(*r)/col[0];
1019                         if(g) {
1020                                 if(col[1]!=0.0)
1021                                         *g = facm*(*g) + fac*(*g)/col[1];
1022                                 if(col[2]!=0.0)
1023                                         *b = facm*(*b) + fac*(*b)/col[2];
1024                         }
1025                                 break;
1026                 case MA_RAMP_DIFF:
1027                         *r = facm*(*r) + fac*fabs(*r-col[0]);
1028                         if(g) {
1029                                 *g = facm*(*g) + fac*fabs(*g-col[1]);
1030                                 *b = facm*(*b) + fac*fabs(*b-col[2]);
1031                         }
1032                                 break;
1033                 case MA_RAMP_DARK:
1034                         tmp= fac*col[0];
1035                         if(tmp < *r) *r= tmp;
1036                                 if(g) {
1037                                         tmp= fac*col[1];
1038                                         if(tmp < *g) *g= tmp;
1039                                         tmp= fac*col[2];
1040                                         if(tmp < *b) *b= tmp;
1041                                 }
1042                                         break;
1043                 case MA_RAMP_LIGHT:
1044                         tmp= fac*col[0];
1045                         if(tmp > *r) *r= tmp;
1046                                 if(g) {
1047                                         tmp= fac*col[1];
1048                                         if(tmp > *g) *g= tmp;
1049                                         tmp= fac*col[2];
1050                                         if(tmp > *b) *b= tmp;
1051                                 }
1052                                         break;
1053                 case MA_RAMP_DODGE:
1054
1055
1056                         if(*r !=0.0){
1057                                 tmp = 1.0 - fac*col[0];
1058                                 if(tmp <= 0.0)
1059                                         *r = 1.0;
1060                                 else if ((tmp = (*r) / tmp)> 1.0)
1061                                         *r = 1.0;
1062                                 else
1063                                         *r = tmp;
1064                         }
1065                         if(g) {
1066                                 if(*g !=0.0){
1067                                         tmp = 1.0 - fac*col[1];
1068                                         if(tmp <= 0.0 )
1069                                                 *g = 1.0;
1070                                         else if ((tmp = (*g) / tmp) > 1.0 )
1071                                                 *g = 1.0;
1072                                         else
1073                                                 *g = tmp;
1074                                 }
1075                                 if(*b !=0.0){
1076                                         tmp = 1.0 - fac*col[2];
1077                                         if(tmp <= 0.0)
1078                                                 *b = 1.0;
1079                                         else if ((tmp = (*b) / tmp) > 1.0 )
1080                                                 *b = 1.0;
1081                                         else
1082                                                 *b = tmp;
1083                                 }
1084
1085                         }
1086                                 break;
1087                 case MA_RAMP_BURN:
1088
1089                         tmp = facm + fac*col[0];
1090
1091                         if(tmp <= 0.0)
1092                                 *r = 0.0;
1093                         else if (( tmp = (1.0 - (1.0 - (*r)) / tmp )) < 0.0)
1094                                 *r = 0.0;
1095                         else if (tmp > 1.0)
1096                                 *r=1.0;
1097                         else
1098                                 *r = tmp;
1099
1100                         if(g) {
1101                                 tmp = facm + fac*col[1];
1102                                 if(tmp <= 0.0)
1103                                         *g = 0.0;
1104                                 else if (( tmp = (1.0 - (1.0 - (*g)) / tmp )) < 0.0 )
1105                                         *g = 0.0;
1106                                 else if(tmp >1.0)
1107                                         *g=1.0;
1108                                 else
1109                                         *g = tmp;
1110
1111                                 tmp = facm + fac*col[2];
1112                                 if(tmp <= 0.0)
1113                                         *b = 0.0;
1114                                 else if (( tmp = (1.0 - (1.0 - (*b)) / tmp )) < 0.0  )
1115                                         *b = 0.0;
1116                                 else if(tmp >1.0)
1117                                         *b= 1.0;
1118                                 else
1119                                         *b = tmp;
1120                         }
1121                                 break;
1122                 case MA_RAMP_HUE:
1123                         if(g){
1124                                 float rH,rS,rV;
1125                                 float colH,colS,colV;
1126                                 float tmpr,tmpg,tmpb;
1127                                 rgb_to_hsv(col[0],col[1],col[2],&colH,&colS,&colV);
1128                                 if(colS!=0 ){
1129                                         rgb_to_hsv(*r,*g,*b,&rH,&rS,&rV);
1130                                         hsv_to_rgb( colH , rS, rV, &tmpr, &tmpg, &tmpb);
1131                                         *r = facm*(*r) + fac*tmpr;
1132                                         *g = facm*(*g) + fac*tmpg;
1133                                         *b = facm*(*b) + fac*tmpb;
1134                                 }
1135                         }
1136                                 break;
1137                 case MA_RAMP_SAT:
1138                         if(g){
1139                                 float rH,rS,rV;
1140                                 float colH,colS,colV;
1141                                 rgb_to_hsv(*r,*g,*b,&rH,&rS,&rV);
1142                                 if(rS!=0){
1143                                         rgb_to_hsv(col[0],col[1],col[2],&colH,&colS,&colV);
1144                                         hsv_to_rgb( rH, (facm*rS +fac*colS), rV, r, g, b);
1145                                 }
1146                         }
1147                                 break;
1148                 case MA_RAMP_VAL:
1149                         if(g){
1150                                 float rH,rS,rV;
1151                                 float colH,colS,colV;
1152                                 rgb_to_hsv(*r,*g,*b,&rH,&rS,&rV);
1153                                 rgb_to_hsv(col[0],col[1],col[2],&colH,&colS,&colV);
1154                                 hsv_to_rgb( rH, rS, (facm*rV +fac*colV), r, g, b);
1155                         }
1156                                 break;
1157                 case MA_RAMP_COLOR:
1158                         if(g){
1159                                 float rH,rS,rV;
1160                                 float colH,colS,colV;
1161                                 float tmpr,tmpg,tmpb;
1162                                 rgb_to_hsv(col[0],col[1],col[2],&colH,&colS,&colV);
1163                                 if(colS!=0){
1164                                         rgb_to_hsv(*r,*g,*b,&rH,&rS,&rV);
1165                                         hsv_to_rgb( colH, colS, rV, &tmpr, &tmpg, &tmpb);
1166                                         *r = facm*(*r) + fac*tmpr;
1167                                         *g = facm*(*g) + fac*tmpg;
1168                                         *b = facm*(*b) + fac*tmpb;
1169                                 }
1170                         }
1171                                 break;
1172         }
1173
1174 }
1175
1176