source/blender/render/intern/source/convertblender.c

   1 /**
   2  * $Id$
   3  *
   4  * ***** BEGIN GPL LICENSE BLOCK *****
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19  *
  20  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  21  * All rights reserved.
  22  *
  23  * Contributors: 2004/2005/2006 Blender Foundation, full recode
  24  *
  25  * ***** END GPL LICENSE BLOCK *****
  26  */
  27
  28 #include <math.h>
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <limits.h>
  33
  34 #include "blendef.h"
  35 #include "MTC_matrixops.h"
  36
  37 #include "MEM_guardedalloc.h"
  38
  39 #include "BLI_arithb.h"
  40 #include "BLI_blenlib.h"
  41 #include "BLI_rand.h"
  42 #include "BLI_memarena.h"
  43 #include "BLI_ghash.h"
  44
  45 #include "DNA_armature_types.h"
  46 #include "DNA_camera_types.h"
  47 #include "DNA_material_types.h"
  48 #include "DNA_curve_types.h"
  49 #include "DNA_effect_types.h"
  50 #include "DNA_group_types.h"
  51 #include "DNA_lamp_types.h"
  52 #include "DNA_image_types.h"
  53 #include "DNA_lattice_types.h"
  54 #include "DNA_mesh_types.h"
  55 #include "DNA_meshdata_types.h"
  56 #include "DNA_meta_types.h"
  57 #include "DNA_modifier_types.h"
  58 #include "DNA_node_types.h"
  59 #include "DNA_object_types.h"
  60 #include "DNA_object_force.h"
  61 #include "DNA_object_fluidsim.h"
  62 #include "DNA_particle_types.h"
  63 #include "DNA_scene_types.h"
  64 #include "DNA_texture_types.h"
  65 #include "DNA_view3d_types.h"
  66
  67 #include "BKE_anim.h"
  68 #include "BKE_armature.h"
  69 #include "BKE_action.h"
  70 #include "BKE_curve.h"
  71 #include "BKE_customdata.h"
  72 #include "BKE_colortools.h"
  73 #include "BKE_constraint.h"
  74 #include "BKE_displist.h"
  75 #include "BKE_deform.h"
  76 #include "BKE_DerivedMesh.h"
  77 #include "BKE_effect.h"
  78 #include "BKE_global.h"
  79 #include "BKE_group.h"
  80 #include "BKE_key.h"
  81 #include "BKE_ipo.h"
  82 #include "BKE_image.h"
  83 #include "BKE_lattice.h"
  84 #include "BKE_library.h"
  85 #include "BKE_material.h"
  86 #include "BKE_main.h"
  87 #include "BKE_mball.h"
  88 #include "BKE_mesh.h"
  89 #include "BKE_modifier.h"
  90 #include "BKE_node.h"
  91 #include "BKE_object.h"
  92 #include "BKE_particle.h"
  93 #include "BKE_scene.h"
  94 #include "BKE_subsurf.h"
  95 #include "BKE_texture.h"
  96 #include "BKE_utildefines.h"
  97 #include "BKE_world.h"
  98
  99 #include "PIL_time.h"
 100 #include "IMB_imbuf_types.h"
 101
 102 #include "envmap.h"
 103 #include "multires.h"
 104 #include "occlusion.h"
 105 #include "render_types.h"
 106 #include "rendercore.h"
 107 #include "renderdatabase.h"
 108 #include "renderpipeline.h"
 109 #include "radio.h"
 110 #include "shadbuf.h"
 111 #include "shading.h"
 112 #include "strand.h"
 113 #include "texture.h"
 114 #include "sss.h"
 115 #include "strand.h"
 116 #include "zbuf.h"
 117 #include "sunsky.h"
 118
 119 #ifndef DISABLE_YAFRAY /* disable yafray */
 120
 121 #include "YafRay_Api.h"
 122
 123 /* yafray: Identity transform 'hack' removed, exporter now transforms vertices back to world.
 124  * Same is true for lamp coords & vec.
 125  * Duplicated data objects & dupliframe/duplivert objects are only stored once,
 126  * only the matrix is stored for all others, in yafray these objects are instances of the original.
 127  * The main changes are in RE_Database_FromScene().
 128  */
 129
 130 #endif /* disable yafray */
 131
 132 /* 10 times larger than normal epsilon, test it on default nurbs sphere with ray_transp (for quad detection) */
 133 /* or for checking vertex normal flips */
 134 #define FLT_EPSILON10 1.19209290e-06F
 135
 136 /* ------------------------------------------------------------------------- */
 137
 138 /* Stuff for stars. This sits here because it uses gl-things. Part of
 139 this code may move down to the converter.  */
 140 /* ------------------------------------------------------------------------- */
 141 /* this is a bad beast, since it is misused by the 3d view drawing as well. */
 142
 143 static HaloRen *initstar(Render *re, ObjectRen *obr, float *vec, float hasize)
 144 {
 145         HaloRen *har;
 146         float hoco[4];
 147
 148         projectverto(vec, re->winmat, hoco);
 149
 150         har= RE_findOrAddHalo(obr, obr->tothalo++);
 151
 152         /* projectvert is done in function zbufvlaggen again, because of parts */
 153         VECCOPY(har->co, vec);
 154         har->hasize= hasize;
 155
 156         har->zd= 0.0;
 157
 158         return har;
 159 }
 160
 161 /* there must be a 'fixed' amount of stars generated between
 162 *         near and far
 163 * all stars must by preference lie on the far and solely
 164 *        differ in clarity/color
 165 */
 166
 167 void RE_make_stars(Render *re, void (*initfunc)(void),
 168                                    void (*vertexfunc)(float*),  void (*termfunc)(void))
 169 {
 170         extern unsigned char hash[512];
 171         ObjectRen *obr= NULL;
 172         World *wrld= NULL;
 173         HaloRen *har;
 174         Scene *scene;
 175         Camera *camera;
 176         double dblrand, hlfrand;
 177         float vec[4], fx, fy, fz;
 178         float fac, starmindist, clipend;
 179         float mat[4][4], stargrid, maxrand, maxjit, force, alpha;
 180         int x, y, z, sx, sy, sz, ex, ey, ez, done = 0;
 181
 182         if(initfunc) {
 183                 scene= G.scene;
 184                 wrld= G.scene->world;
 185         }
 186         else {
 187                 scene= re->scene;
 188                 wrld= &(re->wrld);
 189         }
 190
 191         stargrid = wrld->stardist;                      /* distance between stars */
 192         maxrand = 2.0;                                          /* amount a star can be shifted (in grid units) */
 193         maxjit = (wrld->starcolnoise);          /* amount a color is being shifted */
 194
 195         /* size of stars */
 196         force = ( wrld->starsize );
 197
 198         /* minimal free space (starting at camera) */
 199         starmindist= wrld->starmindist;
 200
 201         if (stargrid <= 0.10) return;
 202
 203         if (re) re->flag |= R_HALO;
 204         else stargrid *= 1.0;                           /* then it draws fewer */
 205
 206         if(re) MTC_Mat4Invert(mat, re->viewmat);
 207         else MTC_Mat4One(mat);
 208
 209         /* BOUNDING BOX CALCULATION
 210                 * bbox goes from z = loc_near_var | loc_far_var,
 211                 * x = -z | +z,
 212                 * y = -z | +z
 213                 */
 214
 215         if(scene->camera==NULL)
 216                 return;
 217         camera = scene->camera->data;
 218         clipend = camera->clipend;
 219
 220         /* convert to grid coordinates */
 221
 222         sx = ((mat[3][0] - clipend) / stargrid) - maxrand;
 223         sy = ((mat[3][1] - clipend) / stargrid) - maxrand;
 224         sz = ((mat[3][2] - clipend) / stargrid) - maxrand;
 225
 226         ex = ((mat[3][0] + clipend) / stargrid) + maxrand;
 227         ey = ((mat[3][1] + clipend) / stargrid) + maxrand;
 228         ez = ((mat[3][2] + clipend) / stargrid) + maxrand;
 229
 230         dblrand = maxrand * stargrid;
 231         hlfrand = 2.0 * dblrand;
 232
 233         if (initfunc) {
 234                 initfunc();
 235         }
 236
 237         if(re) /* add render object for stars */
 238                 obr= RE_addRenderObject(re, NULL, NULL, 0, 0, 0);
 239
 240         for (x = sx, fx = sx * stargrid; x <= ex; x++, fx += stargrid) {
 241                 for (y = sy, fy = sy * stargrid; y <= ey ; y++, fy += stargrid) {
 242                         for (z = sz, fz = sz * stargrid; z <= ez; z++, fz += stargrid) {
 243
 244                                 BLI_srand((hash[z & 0xff] << 24) + (hash[y & 0xff] << 16) + (hash[x & 0xff] << 8));
 245                                 vec[0] = fx + (hlfrand * BLI_drand()) - dblrand;
 246                                 vec[1] = fy + (hlfrand * BLI_drand()) - dblrand;
 247                                 vec[2] = fz + (hlfrand * BLI_drand()) - dblrand;
 248                                 vec[3] = 1.0;
 249
 250                                 if (vertexfunc) {
 251                                         if(done & 1) vertexfunc(vec);
 252                                         done++;
 253                                 }
 254                                 else {
 255                                         MTC_Mat4MulVecfl(re->viewmat, vec);
 256
 257                                         /* in vec are global coordinates
 258                                         * calculate distance to camera
 259                                         * and using that, define the alpha
 260                                         */
 261
 262                                         {
 263                                                 float tx, ty, tz;
 264
 265                                                 tx = vec[0];
 266                                                 ty = vec[1];
 267                                                 tz = vec[2];
 268
 269                                                 alpha = sqrt(tx * tx + ty * ty + tz * tz);
 270
 271                                                 if (alpha >= clipend) alpha = 0.0;
 272                                                 else if (alpha <= starmindist) alpha = 0.0;
 273                                                 else if (alpha <= 2.0 * starmindist) {
 274                                                         alpha = (alpha - starmindist) / starmindist;
 275                                                 } else {
 276                                                         alpha -= 2.0 * starmindist;
 277                                                         alpha /= (clipend - 2.0 * starmindist);
 278                                                         alpha = 1.0 - alpha;
 279                                                 }
 280                                         }
 281
 282
 283                                         if (alpha != 0.0) {
 284                                                 fac = force * BLI_drand();
 285
 286                                                 har = initstar(re, obr, vec, fac);
 287
 288                                                 if (har) {
 289                                                         har->alfa = sqrt(sqrt(alpha));
 290                                                         har->add= 255;
 291                                                         har->r = har->g = har->b = 1.0;
 292                                                         if (maxjit) {
 293                                                                 har->r += ((maxjit * BLI_drand()) ) - maxjit;
 294                                                                 har->g += ((maxjit * BLI_drand()) ) - maxjit;
 295                                                                 har->b += ((maxjit * BLI_drand()) ) - maxjit;
 296                                                         }
 297                                                         har->hard = 32;
 298                                                         har->lay= -1;
 299                                                         har->type |= HA_ONLYSKY;
 300                                                         done++;
 301                                                 }
 302                                         }
 303                                 }
 304                         }
 305                         /* do not call blender_test_break() here, since it is used in UI as well, confusing the callback system */
 306                         /* main cause is G.afbreek of course, a global again... (ton) */
 307                 }
 308         }
 309         if (termfunc) termfunc();
 310
 311         if(obr)
 312                 re->tothalo += obr->tothalo;
 313 }
 314
 315
 316 /* ------------------------------------------------------------------------- */
 317 /* tool functions/defines for ad hoc simplification and possible future
 318    cleanup      */
 319 /* ------------------------------------------------------------------------- */
 320
 321 #define UVTOINDEX(u,v) (startvlak + (u) * sizev + (v))
 322 /*
 323
 324 NOTE THAT U/V COORDINATES ARE SOMETIMES SWAPPED !!
 325
 326 ^       ()----p4----p3----()
 327 |       |     |     |     |
 328 u       |     |  F1 |  F2 |
 329         |     |     |     |
 330         ()----p1----p2----()
 331                v ->
 332 */
 333
 334 /* ------------------------------------------------------------------------- */
 335
 336 static void split_v_renderfaces(ObjectRen *obr, int startvlak, int startvert, int usize, int vsize, int uIndex, int cyclu, int cyclv)
 337 {
 338         int vLen = vsize-1+(!!cyclv);
 339         int v;
 340
 341         for (v=0; v<vLen; v++) {
 342                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v);
 343                 VertRen *vert = RE_vertren_copy(obr, vlr->v2);
 344
 345                 if (cyclv) {
 346                         vlr->v2 = vert;
 347
 348                         if (v==vLen-1) {
 349                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + 0);
 350                                 vlr->v1 = vert;
 351                         } else {
 352                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v+1);
 353                                 vlr->v1 = vert;
 354                         }
 355                 } else {
 356                         vlr->v2 = vert;
 357
 358                         if (v<vLen-1) {
 359                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v+1);
 360                                 vlr->v1 = vert;
 361                         }
 362
 363                         if (v==0) {
 364                                 vlr->v1 = RE_vertren_copy(obr, vlr->v1);
 365                         }
 366                 }
 367         }
 368 }
 369
 370 /* ------------------------------------------------------------------------- */
 371
 372 static int check_vnormal(float *n, float *veno)
 373 {
 374         float inp;
 375
 376         inp=n[0]*veno[0]+n[1]*veno[1]+n[2]*veno[2];
 377         if(inp < -FLT_EPSILON10) return 1;
 378         return 0;
 379 }
 380
 381 /* ------------------------------------------------------------------------- */
 382 /* Stress, tangents and normals                                              */
 383 /* ------------------------------------------------------------------------- */
 384
 385 static void calc_edge_stress_add(float *accum, VertRen *v1, VertRen *v2)
 386 {
 387         float len= VecLenf(v1->co, v2->co)/VecLenf(v1->orco, v2->orco);
 388         float *acc;
 389
 390         acc= accum + 2*v1->index;
 391         acc[0]+= len;
 392         acc[1]+= 1.0f;
 393
 394         acc= accum + 2*v2->index;
 395         acc[0]+= len;
 396         acc[1]+= 1.0f;
 397 }
 398
 399 static void calc_edge_stress(Render *re, ObjectRen *obr, Mesh *me)
 400 {
 401         float loc[3], size[3], *accum, *acc, *accumoffs, *stress;
 402         int a;
 403
 404         if(obr->totvert==0) return;
 405
 406         mesh_get_texspace(me, loc, NULL, size);
 407
 408         accum= MEM_callocN(2*sizeof(float)*obr->totvert, "temp accum for stress");
 409
 410         /* de-normalize orco */
 411         for(a=0; a<obr->totvert; a++) {
 412                 VertRen *ver= RE_findOrAddVert(obr, a);
 413                 if(ver->orco) {
 414                         ver->orco[0]= ver->orco[0]*size[0] +loc[0];
 415                         ver->orco[1]= ver->orco[1]*size[1] +loc[1];
 416                         ver->orco[2]= ver->orco[2]*size[2] +loc[2];
 417                 }
 418         }
 419
 420         /* add stress values */
 421         accumoffs= accum;       /* so we can use vertex index */
 422         for(a=0; a<obr->totvlak; a++) {
 423                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 424
 425                 if(vlr->v1->orco && vlr->v4) {
 426                         calc_edge_stress_add(accumoffs, vlr->v1, vlr->v2);
 427                         calc_edge_stress_add(accumoffs, vlr->v2, vlr->v3);
 428                         calc_edge_stress_add(accumoffs, vlr->v3, vlr->v1);
 429                         if(vlr->v4) {
 430                                 calc_edge_stress_add(accumoffs, vlr->v3, vlr->v4);
 431                                 calc_edge_stress_add(accumoffs, vlr->v4, vlr->v1);
 432                                 calc_edge_stress_add(accumoffs, vlr->v2, vlr->v4);
 433                         }
 434                 }
 435         }
 436
 437         for(a=0; a<obr->totvert; a++) {
 438                 VertRen *ver= RE_findOrAddVert(obr, a);
 439                 if(ver->orco) {
 440                         /* find stress value */
 441                         acc= accumoffs + 2*ver->index;
 442                         if(acc[1]!=0.0f)
 443                                 acc[0]/= acc[1];
 444                         stress= RE_vertren_get_stress(obr, ver, 1);
 445                         *stress= *acc;
 446
 447                         /* restore orcos */
 448                         ver->orco[0] = (ver->orco[0]-loc[0])/size[0];
 449                         ver->orco[1] = (ver->orco[1]-loc[1])/size[1];
 450                         ver->orco[2] = (ver->orco[2]-loc[2])/size[2];
 451                 }
 452         }
 453
 454         MEM_freeN(accum);
 455 }
 456
 457 /* gets tangent from tface or orco */
 458 static void calc_tangent_vector(ObjectRen *obr, VertexTangent **vtangents, MemArena *arena, VlakRen *vlr, int do_nmap_tangent, int do_tangent)
 459 {
 460         MTFace *tface= RE_vlakren_get_tface(obr, vlr, obr->actmtface, NULL, 0);
 461         VertRen *v1=vlr->v1, *v2=vlr->v2, *v3=vlr->v3, *v4=vlr->v4;
 462         float tang[3], *tav;
 463         float *uv1, *uv2, *uv3, *uv4;
 464         float uv[4][2];
 465
 466         if(tface) {
 467                 uv1= tface->uv[0];
 468                 uv2= tface->uv[1];
 469                 uv3= tface->uv[2];
 470                 uv4= tface->uv[3];
 471         }
 472         else if(v1->orco) {
 473                 uv1= uv[0]; uv2= uv[1]; uv3= uv[2]; uv4= uv[3];
 474                 spheremap(v1->orco[0], v1->orco[1], v1->orco[2], &uv[0][0], &uv[0][1]);
 475                 spheremap(v2->orco[0], v2->orco[1], v2->orco[2], &uv[1][0], &uv[1][1]);
 476                 spheremap(v3->orco[0], v3->orco[1], v3->orco[2], &uv[2][0], &uv[2][1]);
 477                 if(v4)
 478                         spheremap(v4->orco[0], v4->orco[1], v4->orco[2], &uv[3][0], &uv[3][1]);
 479         }
 480         else return;
 481
 482         tangent_from_uv(uv1, uv2, uv3, v1->co, v2->co, v3->co, vlr->n, tang);
 483
 484         if(do_tangent) {
 485                 tav= RE_vertren_get_tangent(obr, v1, 1);
 486                 VECADD(tav, tav, tang);
 487                 tav= RE_vertren_get_tangent(obr, v2, 1);
 488                 VECADD(tav, tav, tang);
 489                 tav= RE_vertren_get_tangent(obr, v3, 1);
 490                 VECADD(tav, tav, tang);
 491         }
 492
 493         if(do_nmap_tangent) {
 494                 sum_or_add_vertex_tangent(arena, &vtangents[v1->index], tang, uv1);
 495                 sum_or_add_vertex_tangent(arena, &vtangents[v2->index], tang, uv2);
 496                 sum_or_add_vertex_tangent(arena, &vtangents[v3->index], tang, uv3);
 497         }
 498
 499         if(v4) {
 500                 tangent_from_uv(uv1, uv3, uv4, v1->co, v3->co, v4->co, vlr->n, tang);
 501
 502                 if(do_tangent) {
 503                         tav= RE_vertren_get_tangent(obr, v1, 1);
 504                         VECADD(tav, tav, tang);
 505                         tav= RE_vertren_get_tangent(obr, v3, 1);
 506                         VECADD(tav, tav, tang);
 507                         tav= RE_vertren_get_tangent(obr, v4, 1);
 508                         VECADD(tav, tav, tang);
 509                 }
 510
 511                 if(do_nmap_tangent) {
 512                         sum_or_add_vertex_tangent(arena, &vtangents[v1->index], tang, uv1);
 513                         sum_or_add_vertex_tangent(arena, &vtangents[v3->index], tang, uv3);
 514                         sum_or_add_vertex_tangent(arena, &vtangents[v4->index], tang, uv4);
 515                 }
 516         }
 517 }
 518
 519
 520 static void calc_vertexnormals(Render *re, ObjectRen *obr, int do_tangent, int do_nmap_tangent)
 521 {
 522         MemArena *arena= NULL;
 523         VertexTangent **vtangents= NULL;
 524         int a;
 525
 526         if(do_nmap_tangent) {
 527                 arena= BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE);
 528                 BLI_memarena_use_calloc(arena);
 529
 530                 vtangents= MEM_callocN(sizeof(VertexTangent*)*obr->totvert, "VertexTangent");
 531         }
 532
 533                 /* clear all vertex normals */
 534         for(a=0; a<obr->totvert; a++) {
 535                 VertRen *ver= RE_findOrAddVert(obr, a);
 536                 ver->n[0]=ver->n[1]=ver->n[2]= 0.0f;
 537         }
 538
 539                 /* calculate cos of angles and point-masses, use as weight factor to
 540                    add face normal to vertex */
 541         for(a=0; a<obr->totvlak; a++) {
 542                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 543                 if(vlr->flag & ME_SMOOTH) {
 544                         VertRen *v1= vlr->v1;
 545                         VertRen *v2= vlr->v2;
 546                         VertRen *v3= vlr->v3;
 547                         VertRen *v4= vlr->v4;
 548                         float n1[3], n2[3], n3[3], n4[3];
 549                         float fac1, fac2, fac3, fac4=0.0f;
 550
 551                         if(re->flag & R_GLOB_NOPUNOFLIP)
 552                                 vlr->flag |= R_NOPUNOFLIP;
 553
 554                         VecSubf(n1, v2->co, v1->co);
 555                         Normalize(n1);
 556                         VecSubf(n2, v3->co, v2->co);
 557                         Normalize(n2);
 558                         if(v4==NULL) {
 559                                 VecSubf(n3, v1->co, v3->co);
 560                                 Normalize(n3);
 561
 562                                 fac1= saacos(-n1[0]*n3[0]-n1[1]*n3[1]-n1[2]*n3[2]);
 563                                 fac2= saacos(-n1[0]*n2[0]-n1[1]*n2[1]-n1[2]*n2[2]);
 564                                 fac3= saacos(-n2[0]*n3[0]-n2[1]*n3[1]-n2[2]*n3[2]);
 565                         }
 566                         else {
 567                                 VecSubf(n3, v4->co, v3->co);
 568                                 Normalize(n3);
 569                                 VecSubf(n4, v1->co, v4->co);
 570                                 Normalize(n4);
 571
 572                                 fac1= saacos(-n4[0]*n1[0]-n4[1]*n1[1]-n4[2]*n1[2]);
 573                                 fac2= saacos(-n1[0]*n2[0]-n1[1]*n2[1]-n1[2]*n2[2]);
 574                                 fac3= saacos(-n2[0]*n3[0]-n2[1]*n3[1]-n2[2]*n3[2]);
 575                                 fac4= saacos(-n3[0]*n4[0]-n3[1]*n4[1]-n3[2]*n4[2]);
 576
 577                                 if(!(vlr->flag & R_NOPUNOFLIP)) {
 578                                         if( check_vnormal(vlr->n, v4->n) ) fac4= -fac4;
 579                                 }
 580
 581                                 v4->n[0] +=fac4*vlr->n[0];
 582                                 v4->n[1] +=fac4*vlr->n[1];
 583                                 v4->n[2] +=fac4*vlr->n[2];
 584                         }
 585
 586                         if(!(vlr->flag & R_NOPUNOFLIP)) {
 587                                 if( check_vnormal(vlr->n, v1->n) ) fac1= -fac1;
 588                                 if( check_vnormal(vlr->n, v2->n) ) fac2= -fac2;
 589                                 if( check_vnormal(vlr->n, v3->n) ) fac3= -fac3;
 590                         }
 591
 592                         v1->n[0] +=fac1*vlr->n[0];
 593                         v1->n[1] +=fac1*vlr->n[1];
 594                         v1->n[2] +=fac1*vlr->n[2];
 595
 596                         v2->n[0] +=fac2*vlr->n[0];
 597                         v2->n[1] +=fac2*vlr->n[1];
 598                         v2->n[2] +=fac2*vlr->n[2];
 599
 600                         v3->n[0] +=fac3*vlr->n[0];
 601                         v3->n[1] +=fac3*vlr->n[1];
 602                         v3->n[2] +=fac3*vlr->n[2];
 603
 604                 }
 605                 if(do_nmap_tangent || do_tangent) {
 606                         /* tangents still need to be calculated for flat faces too */
 607                         /* weighting removed, they are not vertexnormals */
 608                         calc_tangent_vector(obr, vtangents, arena, vlr, do_nmap_tangent, do_tangent);
 609                 }
 610         }
 611
 612                 /* do solid faces */
 613         for(a=0; a<obr->totvlak; a++) {
 614                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
 615                 if((vlr->flag & ME_SMOOTH)==0) {
 616                         float *f1= vlr->v1->n;
 617                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 618                         f1= vlr->v2->n;
 619                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 620                         f1= vlr->v3->n;
 621                         if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 622                         if(vlr->v4) {
 623                                 f1= vlr->v4->n;
 624                                 if(f1[0]==0.0 && f1[1]==0.0 && f1[2]==0.0) VECCOPY(f1, vlr->n);
 625                         }
 626                 }
 627
 628                 if(do_nmap_tangent) {
 629                         VertRen *v1=vlr->v1, *v2=vlr->v2, *v3=vlr->v3, *v4=vlr->v4;
 630                         MTFace *tface= RE_vlakren_get_tface(obr, vlr, obr->actmtface, NULL, 0);
 631
 632                         if(tface) {
 633                                 float *vtang, *ftang= RE_vlakren_get_nmap_tangent(obr, vlr, 1);
 634
 635                                 vtang= find_vertex_tangent(vtangents[v1->index], tface->uv[0]);
 636                                 VECCOPY(ftang, vtang);
 637                                 Normalize(ftang);
 638                                 vtang= find_vertex_tangent(vtangents[v2->index], tface->uv[1]);
 639                                 VECCOPY(ftang+3, vtang);
 640                                 Normalize(ftang+3);
 641                                 vtang= find_vertex_tangent(vtangents[v3->index], tface->uv[2]);
 642                                 VECCOPY(ftang+6, vtang);
 643                                 Normalize(ftang+6);
 644                                 if(v4) {
 645                                         vtang= find_vertex_tangent(vtangents[v4->index], tface->uv[3]);
 646                                         VECCOPY(ftang+9, vtang);
 647                                         Normalize(ftang+9);
 648                                 }
 649                         }
 650                 }
 651         }
 652
 653                 /* normalize vertex normals */
 654         for(a=0; a<obr->totvert; a++) {
 655                 VertRen *ver= RE_findOrAddVert(obr, a);
 656                 Normalize(ver->n);
 657                 if(do_tangent) {
 658                         float *tav= RE_vertren_get_tangent(obr, ver, 0);
 659                         if (tav) {
 660                                 /* orthonorm. */
 661                                 float tdn = tav[0]*ver->n[0] + tav[1]*ver->n[1] + tav[2]*ver->n[2];
 662                                 tav[0] -= ver->n[0]*tdn;
 663                                 tav[1] -= ver->n[1]*tdn;
 664                                 tav[2] -= ver->n[2]*tdn;
 665                                 Normalize(tav);
 666                         }
 667                 }
 668         }
 669
 670
 671         if(arena)
 672                 BLI_memarena_free(arena);
 673         if(vtangents)
 674                 MEM_freeN(vtangents);
 675 }
 676
 677 /* ------------------------------------------------------------------------- */
 678 /* Autosmoothing:                                                            */
 679 /* ------------------------------------------------------------------------- */
 680
 681 typedef struct ASvert {
 682         int totface;
 683         ListBase faces;
 684 } ASvert;
 685
 686 typedef struct ASface {
 687         struct ASface *next, *prev;
 688         VlakRen *vlr[4];
 689         VertRen *nver[4];
 690 } ASface;
 691
 692 static void as_addvert(ASvert *asv, VertRen *v1, VlakRen *vlr)
 693 {
 694         ASface *asf;
 695         int a;
 696
 697         if(v1 == NULL) return;
 698
 699         if(asv->faces.first==NULL) {
 700                 asf= MEM_callocN(sizeof(ASface), "asface");
 701                 BLI_addtail(&asv->faces, asf);
 702         }
 703
 704         asf= asv->faces.last;
 705         for(a=0; a<4; a++) {
 706                 if(asf->vlr[a]==NULL) {
 707                         asf->vlr[a]= vlr;
 708                         asv->totface++;
 709                         break;
 710                 }
 711         }
 712
 713         /* new face struct */
 714         if(a==4) {
 715                 asf= MEM_callocN(sizeof(ASface), "asface");
 716                 BLI_addtail(&asv->faces, asf);
 717                 asf->vlr[0]= vlr;
 718                 asv->totface++;
 719         }
 720 }
 721
 722 static int as_testvertex(VlakRen *vlr, VertRen *ver, ASvert *asv, float thresh)
 723 {
 724         /* return 1: vertex needs a copy */
 725         ASface *asf;
 726         float inp;
 727         int a;
 728
 729         if(vlr==0) return 0;
 730
 731         asf= asv->faces.first;
 732         while(asf) {
 733                 for(a=0; a<4; a++) {
 734                         if(asf->vlr[a] && asf->vlr[a]!=vlr) {
 735                                 inp= fabs( vlr->n[0]*asf->vlr[a]->n[0] + vlr->n[1]*asf->vlr[a]->n[1] + vlr->n[2]*asf->vlr[a]->n[2] );
 736                                 if(inp < thresh) return 1;
 737                         }
 738                 }
 739                 asf= asf->next;
 740         }
 741
 742         return 0;
 743 }
 744
 745 static VertRen *as_findvertex(VlakRen *vlr, VertRen *ver, ASvert *asv, float thresh)
 746 {
 747         /* return when new vertex already was made */
 748         ASface *asf;
 749         float inp;
 750         int a;
 751
 752         asf= asv->faces.first;
 753         while(asf) {
 754                 for(a=0; a<4; a++) {
 755                         if(asf->vlr[a] && asf->vlr[a]!=vlr) {
 756                                 /* this face already made a copy for this vertex! */
 757                                 if(asf->nver[a]) {
 758                                         inp= fabs( vlr->n[0]*asf->vlr[a]->n[0] + vlr->n[1]*asf->vlr[a]->n[1] + vlr->n[2]*asf->vlr[a]->n[2] );
 759                                         if(inp >= thresh) {
 760                                                 return asf->nver[a];
 761                                         }
 762                                 }
 763                         }
 764                 }
 765                 asf= asf->next;
 766         }
 767
 768         return NULL;
 769 }
 770
 771 /* note; autosmooth happens in object space still, after applying autosmooth we rotate */
 772 /* note2; actually, when original mesh and displist are equal sized, face normals are from original mesh */
 773 static void autosmooth(Render *re, ObjectRen *obr, float mat[][4], int degr)
 774 {
 775         ASvert *asv, *asverts;
 776         ASface *asf;
 777         VertRen *ver, *v1;
 778         VlakRen *vlr;
 779         float thresh;
 780         int a, b, totvert;
 781
 782         if(obr->totvert==0) return;
 783         asverts= MEM_callocN(sizeof(ASvert)*obr->totvert, "all smooth verts");
 784
 785         thresh= cos( M_PI*(0.5f+(float)degr)/180.0 );
 786
 787         /* step zero: give faces normals of original mesh, if this is provided */
 788
 789
 790         /* step one: construct listbase of all vertices and pointers to faces */
 791         for(a=0; a<obr->totvlak; a++) {
 792                 vlr= RE_findOrAddVlak(obr, a);
 793                 /* skip wire faces */
 794                 if(vlr->v2 != vlr->v3) {
 795                         as_addvert(asverts+vlr->v1->index, vlr->v1, vlr);
 796                         as_addvert(asverts+vlr->v2->index, vlr->v2, vlr);
 797                         as_addvert(asverts+vlr->v3->index, vlr->v3, vlr);
 798                         if(vlr->v4)
 799                                 as_addvert(asverts+vlr->v4->index, vlr->v4, vlr);
 800                 }
 801         }
 802
 803         totvert= obr->totvert;
 804         /* we now test all vertices, when faces have a normal too much different: they get a new vertex */
 805         for(a=0, asv=asverts; a<totvert; a++, asv++) {
 806                 if(asv && asv->totface>1) {
 807                         ver= RE_findOrAddVert(obr, a);
 808
 809                         asf= asv->faces.first;
 810                         while(asf) {
 811                                 for(b=0; b<4; b++) {
 812
 813                                         /* is there a reason to make a new vertex? */
 814                                         vlr= asf->vlr[b];
 815                                         if( as_testvertex(vlr, ver, asv, thresh) ) {
 816
 817                                                 /* already made a new vertex within threshold? */
 818                                                 v1= as_findvertex(vlr, ver, asv, thresh);
 819                                                 if(v1==NULL) {
 820                                                         /* make a new vertex */
 821                                                         v1= RE_vertren_copy(obr, ver);
 822                                                 }
 823                                                 asf->nver[b]= v1;
 824                                                 if(vlr->v1==ver) vlr->v1= v1;
 825                                                 if(vlr->v2==ver) vlr->v2= v1;
 826                                                 if(vlr->v3==ver) vlr->v3= v1;
 827                                                 if(vlr->v4==ver) vlr->v4= v1;
 828                                         }
 829                                 }
 830                                 asf= asf->next;
 831                         }
 832                 }
 833         }
 834
 835         /* free */
 836         for(a=0; a<totvert; a++) {
 837                 BLI_freelistN(&asverts[a].faces);
 838         }
 839         MEM_freeN(asverts);
 840
 841         /* rotate vertices and calculate normal of faces */
 842         for(a=0; a<obr->totvert; a++) {
 843                 ver= RE_findOrAddVert(obr, a);
 844                 MTC_Mat4MulVecfl(mat, ver->co);
 845         }
 846         for(a=0; a<obr->totvlak; a++) {
 847                 vlr= RE_findOrAddVlak(obr, a);
 848
 849                 /* skip wire faces */
 850                 if(vlr->v2 != vlr->v3) {
 851                         if(vlr->v4)
 852                                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
 853                         else
 854                                 CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
 855                 }
 856         }
 857 }
 858
 859 /* ------------------------------------------------------------------------- */
 860 /* Orco hash and Materials                                                   */
 861 /* ------------------------------------------------------------------------- */
 862
 863 static float *get_object_orco(Render *re, Object *ob)
 864 {
 865         float *orco;
 866
 867         if (!re->orco_hash)
 868                 re->orco_hash = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp);
 869
 870         orco = BLI_ghash_lookup(re->orco_hash, ob);
 871
 872         if (!orco) {
 873                 if (ELEM(ob->type, OB_CURVE, OB_FONT)) {
 874                         orco = make_orco_curve(ob);
 875                 } else if (ob->type==OB_SURF) {
 876                         orco = make_orco_surf(ob);
 877                 } else if (ob->type==OB_MBALL) {
 878                         orco = make_orco_mball(ob);
 879                 }
 880
 881                 if (orco)
 882                         BLI_ghash_insert(re->orco_hash, ob, orco);
 883         }
 884
 885         return orco;
 886 }
 887
 888 static void set_object_orco(Render *re, void *ob, float *orco)
 889 {
 890         if (!re->orco_hash)
 891                 re->orco_hash = BLI_ghash_new(BLI_ghashutil_ptrhash, BLI_ghashutil_ptrcmp);
 892
 893         BLI_ghash_insert(re->orco_hash, ob, orco);
 894 }
 895
 896 static void free_mesh_orco_hash(Render *re)
 897 {
 898         if (re->orco_hash) {
 899                 BLI_ghash_free(re->orco_hash, NULL, (GHashValFreeFP)MEM_freeN);
 900                 re->orco_hash = NULL;
 901         }
 902 }
 903
 904 static void flag_render_node_material(Render *re, bNodeTree *ntree)
 905 {
 906         bNode *node;
 907
 908         for(node=ntree->nodes.first; node; node= node->next) {
 909                 if(node->id) {
 910                         if(GS(node->id->name)==ID_MA) {
 911                                 Material *ma= (Material *)node->id;
 912
 913                                 if(ma->mode & MA_ZTRA)
 914                                         re->flag |= R_ZTRA;
 915
 916                                 ma->flag |= MA_IS_USED;
 917                         }
 918                         else if(node->type==NODE_GROUP)
 919                                 flag_render_node_material(re, (bNodeTree *)node->id);
 920                 }
 921         }
 922 }
 923
 924 static Material *give_render_material(Render *re, Object *ob, int nr)
 925 {
 926         extern Material defmaterial;    /* material.c */
 927         Material *ma;
 928
 929         ma= give_current_material(ob, nr);
 930         if(ma==NULL)
 931                 ma= &defmaterial;
 932
 933         if(re->r.mode & R_SPEED) ma->texco |= NEED_UV;
 934
 935         if(ma->mode & MA_ZTRA)
 936                 re->flag |= R_ZTRA;
 937
 938         /* for light groups */
 939         ma->flag |= MA_IS_USED;
 940
 941         if(ma->nodetree && ma->use_nodes)
 942                 flag_render_node_material(re, ma->nodetree);
 943
 944         return ma;
 945 }
 946
 947 /* ------------------------------------------------------------------------- */
 948 /* Particles                                                                 */
 949 /* ------------------------------------------------------------------------- */
 950
 951 /* future thread problem... */
 952 static void static_particle_strand(Render *re, ObjectRen *obr, Material *ma, float *orco, float *surfnor,
 953                                                                    float *uvco, int totuv, MCol *mcol, int totcol, float *vec, float *vec1, float ctime,
 954                                                                    int first, int line, int adapt, float adapt_angle, float adapt_pix, int override_uv)
 955 {
 956         static VertRen *v1= NULL, *v2= NULL;
 957         VlakRen *vlr;
 958         float nor[3], cross[3], crosslen, w, dx, dy, width;
 959         static float anor[3], avec[3];
 960         int flag, i;
 961         static int second=0;
 962
 963         VecSubf(nor, vec, vec1);
 964         Normalize(nor);         // nor needed as tangent
 965         Crossf(cross, vec, nor);
 966
 967         /* turn cross in pixelsize */
 968         w= vec[2]*re->winmat[2][3] + re->winmat[3][3];
 969         dx= re->winx*cross[0]*re->winmat[0][0];
 970         dy= re->winy*cross[1]*re->winmat[1][1];
 971         w= sqrt(dx*dx + dy*dy)/w;
 972
 973         if(w!=0.0f) {
 974                 float fac;
 975                 if(ma->strand_ease!=0.0f) {
 976                         if(ma->strand_ease<0.0f)
 977                                 fac= pow(ctime, 1.0+ma->strand_ease);
 978                         else
 979                                 fac= pow(ctime, 1.0/(1.0f-ma->strand_ease));
 980                 }
 981                 else fac= ctime;
 982
 983                 width= ((1.0f-fac)*ma->strand_sta + (fac)*ma->strand_end);
 984
 985                 /* use actual Blender units for strand width and fall back to minimum width */
 986                 if(ma->mode & MA_STR_B_UNITS){
 987             crosslen= VecLength(cross);
 988             w= 2.0f*crosslen*ma->strand_min/w;
 989
 990                         if(width < w)
 991                                 width= w;
 992
 993                         /*cross is the radius of the strand so we want it to be half of full width */
 994                         VecMulf(cross,0.5/crosslen);
 995                 }
 996                 else
 997                         width/=w;
 998
 999                 VecMulf(cross, width);
1000         }
1001         else width= 1.0f;
1002
1003         if(ma->mode & MA_TANGENT_STR)
1004                 flag= R_SMOOTH|R_NOPUNOFLIP|R_TANGENT;
1005         else
1006                 flag= R_SMOOTH;
1007
1008         /* only 1 pixel wide strands filled in as quads now, otherwise zbuf errors */
1009         if(ma->strand_sta==1.0f)
1010                 flag |= R_STRAND;
1011
1012         /* single face line */
1013         if(line) {
1014                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1015                 vlr->flag= flag;
1016                 vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1017                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1018                 vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1019                 vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1020
1021                 VECCOPY(vlr->v1->co, vec);
1022                 VecAddf(vlr->v1->co, vlr->v1->co, cross);
1023                 VECCOPY(vlr->v1->n, nor);
1024                 vlr->v1->orco= orco;
1025                 vlr->v1->accum= -1.0f;  // accum abuse for strand texco
1026
1027                 VECCOPY(vlr->v2->co, vec);
1028                 VecSubf(vlr->v2->co, vlr->v2->co, cross);
1029                 VECCOPY(vlr->v2->n, nor);
1030                 vlr->v2->orco= orco;
1031                 vlr->v2->accum= vlr->v1->accum;
1032
1033                 VECCOPY(vlr->v4->co, vec1);
1034                 VecAddf(vlr->v4->co, vlr->v4->co, cross);
1035                 VECCOPY(vlr->v4->n, nor);
1036                 vlr->v4->orco= orco;
1037                 vlr->v4->accum= 1.0f;   // accum abuse for strand texco
1038
1039                 VECCOPY(vlr->v3->co, vec1);
1040                 VecSubf(vlr->v3->co, vlr->v3->co, cross);
1041                 VECCOPY(vlr->v3->n, nor);
1042                 vlr->v3->orco= orco;
1043                 vlr->v3->accum= vlr->v4->accum;
1044
1045                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
1046
1047                 vlr->mat= ma;
1048                 vlr->ec= ME_V2V3;
1049
1050                 if(surfnor) {
1051                         float *snor= RE_vlakren_get_surfnor(obr, vlr, 1);
1052                         VECCOPY(snor, surfnor);
1053                 }
1054
1055                 if(uvco){
1056                         for(i=0; i<totuv; i++){
1057                                 MTFace *mtf;
1058                                 mtf=RE_vlakren_get_tface(obr,vlr,i,NULL,1);
1059                                 mtf->uv[0][0]=mtf->uv[1][0]=
1060                                 mtf->uv[2][0]=mtf->uv[3][0]=(uvco+2*i)[0];
1061                                 mtf->uv[0][1]=mtf->uv[1][1]=
1062                                 mtf->uv[2][1]=mtf->uv[3][1]=(uvco+2*i)[1];
1063                         }
1064                         if(override_uv>=0){
1065                                 MTFace *mtf;
1066                                 mtf=RE_vlakren_get_tface(obr,vlr,override_uv,NULL,0);
1067
1068                                 mtf->uv[0][0]=mtf->uv[3][0]=0.0f;
1069                                 mtf->uv[1][0]=mtf->uv[2][0]=1.0f;
1070
1071                                 mtf->uv[0][1]=mtf->uv[1][1]=0.0f;
1072                                 mtf->uv[2][1]=mtf->uv[3][1]=1.0f;
1073                         }
1074                 }
1075                 if(mcol){
1076                         for(i=0; i<totcol; i++){
1077                                 MCol *mc;
1078                                 mc=RE_vlakren_get_mcol(obr,vlr,i,NULL,1);
1079                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1080                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1081                         }
1082                 }
1083         }
1084         /* first two vertices of a strand */
1085         else if(first) {
1086                 if(adapt){
1087                         VECCOPY(anor, nor);
1088                         VECCOPY(avec, vec);
1089                         second=1;
1090                 }
1091
1092                 v1= RE_findOrAddVert(obr, obr->totvert++);
1093                 v2= RE_findOrAddVert(obr, obr->totvert++);
1094
1095                 VECCOPY(v1->co, vec);
1096                 VecAddf(v1->co, v1->co, cross);
1097                 VECCOPY(v1->n, nor);
1098                 v1->orco= orco;
1099                 v1->accum= -1.0f;       // accum abuse for strand texco
1100
1101                 VECCOPY(v2->co, vec);
1102                 VecSubf(v2->co, v2->co, cross);
1103                 VECCOPY(v2->n, nor);
1104                 v2->orco= orco;
1105                 v2->accum= v1->accum;
1106         }
1107         /* more vertices & faces to strand */
1108         else {
1109                 if(adapt==0 || second){
1110                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1111                         vlr->flag= flag;
1112                         vlr->v1= v1;
1113                         vlr->v2= v2;
1114                         vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1115                         vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1116
1117                         v1= vlr->v4; // cycle
1118                         v2= vlr->v3; // cycle
1119
1120
1121                         if(adapt){
1122                                 second=0;
1123                                 VECCOPY(anor,nor);
1124                                 VECCOPY(avec,vec);
1125                         }
1126
1127                 }
1128                 else if(adapt){
1129                         float dvec[3],pvec[3];
1130                         VecSubf(dvec,avec,vec);
1131                         Projf(pvec,dvec,vec);
1132                         VecSubf(dvec,dvec,pvec);
1133
1134                         w= vec[2]*re->winmat[2][3] + re->winmat[3][3];
1135                         dx= re->winx*dvec[0]*re->winmat[0][0]/w;
1136                         dy= re->winy*dvec[1]*re->winmat[1][1]/w;
1137                         w= sqrt(dx*dx + dy*dy);
1138                         if(Inpf(anor,nor)<adapt_angle && w>adapt_pix){
1139                                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1140                                 vlr->flag= flag;
1141                                 vlr->v1= v1;
1142                                 vlr->v2= v2;
1143                                 vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1144                                 vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1145
1146                                 v1= vlr->v4; // cycle
1147                                 v2= vlr->v3; // cycle
1148
1149                                 VECCOPY(anor,nor);
1150                                 VECCOPY(avec,vec);
1151                         }
1152                         else{
1153                                 vlr= RE_findOrAddVlak(obr, obr->totvlak-1);
1154                         }
1155                 }
1156
1157                 VECCOPY(vlr->v4->co, vec);
1158                 VecAddf(vlr->v4->co, vlr->v4->co, cross);
1159                 VECCOPY(vlr->v4->n, nor);
1160                 vlr->v4->orco= orco;
1161                 vlr->v4->accum= -1.0f + 2.0f*ctime;     // accum abuse for strand texco
1162
1163                 VECCOPY(vlr->v3->co, vec);
1164                 VecSubf(vlr->v3->co, vlr->v3->co, cross);
1165                 VECCOPY(vlr->v3->n, nor);
1166                 vlr->v3->orco= orco;
1167                 vlr->v3->accum= vlr->v4->accum;
1168
1169                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
1170
1171                 vlr->mat= ma;
1172                 vlr->ec= ME_V2V3;
1173
1174                 if(surfnor) {
1175                         float *snor= RE_vlakren_get_surfnor(obr, vlr, 1);
1176                         VECCOPY(snor, surfnor);
1177                 }
1178
1179                 if(uvco){
1180                         for(i=0; i<totuv; i++){
1181                                 MTFace *mtf;
1182                                 mtf=RE_vlakren_get_tface(obr,vlr,i,NULL,1);
1183                                 mtf->uv[0][0]=mtf->uv[1][0]=
1184                                 mtf->uv[2][0]=mtf->uv[3][0]=(uvco+2*i)[0];
1185                                 mtf->uv[0][1]=mtf->uv[1][1]=
1186                                 mtf->uv[2][1]=mtf->uv[3][1]=(uvco+2*i)[1];
1187                         }
1188                         if(override_uv>=0){
1189                                 MTFace *mtf;
1190                                 mtf=RE_vlakren_get_tface(obr,vlr,override_uv,NULL,0);
1191
1192                                 mtf->uv[0][0]=mtf->uv[3][0]=0.0f;
1193                                 mtf->uv[1][0]=mtf->uv[2][0]=1.0f;
1194
1195                                 mtf->uv[0][1]=mtf->uv[1][1]=(vlr->v1->accum+1.0f)/2.0f;
1196                                 mtf->uv[2][1]=mtf->uv[3][1]=(vlr->v3->accum+1.0f)/2.0f;
1197                         }
1198                 }
1199                 if(mcol){
1200                         for(i=0; i<totcol; i++){
1201                                 MCol *mc;
1202                                 mc=RE_vlakren_get_mcol(obr,vlr,i,NULL,1);
1203                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1204                                 mc[0]=mc[1]=mc[2]=mc[3]=mcol[i];
1205                         }
1206                 }
1207         }
1208 }
1209
1210 static void static_particle_wire(ObjectRen *obr, Material *ma, float *vec, float *vec1, int first, int line)
1211 {
1212         VlakRen *vlr;
1213         static VertRen *v1;
1214
1215         if(line) {
1216                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1217                 vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1218                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1219                 vlr->v3= vlr->v2;
1220                 vlr->v4= NULL;
1221
1222                 VECCOPY(vlr->v1->co, vec);
1223                 VECCOPY(vlr->v2->co, vec1);
1224
1225                 VecSubf(vlr->n, vec, vec1);
1226                 Normalize(vlr->n);
1227                 VECCOPY(vlr->v1->n, vlr->n);
1228                 VECCOPY(vlr->v2->n, vlr->n);
1229
1230                 vlr->mat= ma;
1231                 vlr->ec= ME_V1V2;
1232
1233         }
1234         else if(first) {
1235                 v1= RE_findOrAddVert(obr, obr->totvert++);
1236                 VECCOPY(v1->co, vec);
1237         }
1238         else {
1239                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1240                 vlr->v1= v1;
1241                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1242                 vlr->v3= vlr->v2;
1243                 vlr->v4= NULL;
1244
1245                 v1= vlr->v2; // cycle
1246                 VECCOPY(v1->co, vec);
1247
1248                 VecSubf(vlr->n, vec, vec1);
1249                 Normalize(vlr->n);
1250                 VECCOPY(v1->n, vlr->n);
1251
1252                 vlr->mat= ma;
1253                 vlr->ec= ME_V1V2;
1254         }
1255
1256 }
1257 static void particle_billboard(Render *re, ObjectRen *obr, Material *ma, Object *bb_ob, float *vec, float *vel, float size, float tilt, short align,
1258                                                            int lock, int p, int totpart, short uv_split, short anim, short split_offset, float random, float pa_time, float offset[2], int uv[3])
1259 {
1260         VlakRen *vlr;
1261         MTFace *mtf;
1262         float xvec[3]={1.0f,0.0f,0.0f}, yvec[3]={0.0f,1.0f,0.0f}, zvec[3];
1263         float onevec[3]={0.0f,0.0f,0.0f}, tvec[3],tvec2[3], bb_center[3];
1264         float uvx=0.0f, uvy=0.0f, uvdx=1.0f, uvdy=1.0f, time=0.0f;
1265
1266         if(align<PART_BB_VIEW)
1267                 onevec[align]=1.0f;
1268
1269         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1270         vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1271         vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1272         vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1273         vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1274
1275         if(lock && align==PART_BB_VIEW){
1276                 VECCOPY(xvec,bb_ob->obmat[0]);
1277                 Normalize(xvec);
1278                 VECCOPY(yvec,bb_ob->obmat[1]);
1279                 Normalize(yvec);
1280                 VECCOPY(zvec,bb_ob->obmat[2]);
1281                 Normalize(zvec);
1282         }
1283         else if(align==PART_BB_VEL){
1284                 float temp[3];
1285                 VECCOPY(temp,vel);
1286                 Normalize(temp);
1287                 VECSUB(zvec,bb_ob->obmat[3],vec);
1288                 if(lock){
1289                         float fac=-Inpf(zvec,temp);
1290                         VECADDFAC(zvec,zvec,temp,fac);
1291                 }
1292                 Normalize(zvec);
1293                 Crossf(xvec,temp,zvec);
1294                 Normalize(xvec);
1295                 Crossf(yvec,zvec,xvec);
1296         }
1297         else{
1298                 VECSUB(zvec,bb_ob->obmat[3],vec);
1299                 if(lock)
1300                         zvec[align]=0.0f;
1301                 Normalize(zvec);
1302
1303                 if(align<PART_BB_VIEW)
1304                         Crossf(xvec,onevec,zvec);
1305                 else
1306                         Crossf(xvec,bb_ob->obmat[1],zvec);
1307                 Normalize(xvec);
1308                 Crossf(yvec,zvec,xvec);
1309         }
1310
1311         VECCOPY(tvec,xvec);
1312         VECCOPY(tvec2,yvec);
1313
1314         VecMulf(xvec,cos(tilt*(float)M_PI));
1315         VecMulf(tvec2,sin(tilt*(float)M_PI));
1316         VECADD(xvec,xvec,tvec2);
1317
1318         VecMulf(yvec,cos(tilt*(float)M_PI));
1319         VecMulf(tvec,-sin(tilt*(float)M_PI));
1320         VECADD(yvec,yvec,tvec);
1321
1322         VecMulf(xvec,size);
1323         VecMulf(yvec,size);
1324
1325         VECADDFAC(bb_center,vec,xvec,offset[0]);
1326         VECADDFAC(bb_center,bb_center,yvec,offset[1]);
1327
1328         VECADD(vlr->v1->co,bb_center,xvec);
1329         VECADD(vlr->v1->co,vlr->v1->co,yvec);
1330         MTC_Mat4MulVecfl(re->viewmat,vlr->v1->co);
1331
1332         VECSUB(vlr->v2->co,bb_center,xvec);
1333         VECADD(vlr->v2->co,vlr->v2->co,yvec);
1334         MTC_Mat4MulVecfl(re->viewmat,vlr->v2->co);
1335
1336         VECSUB(vlr->v3->co,bb_center,xvec);
1337         VECSUB(vlr->v3->co,vlr->v3->co,yvec);
1338         MTC_Mat4MulVecfl(re->viewmat,vlr->v3->co);
1339
1340         VECADD(vlr->v4->co,bb_center,xvec);
1341         VECSUB(vlr->v4->co,vlr->v4->co,yvec);
1342         MTC_Mat4MulVecfl(re->viewmat,vlr->v4->co);
1343
1344         CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
1345         VECCOPY(vlr->v1->n,vlr->n);
1346         VECCOPY(vlr->v2->n,vlr->n);
1347         VECCOPY(vlr->v3->n,vlr->n);
1348         VECCOPY(vlr->v4->n,vlr->n);
1349
1350         vlr->mat= ma;
1351         vlr->ec= ME_V2V3;
1352
1353         if(uv_split>1){
1354                 uvdx=uvdy=1.0f/(float)uv_split;
1355                 if(anim==PART_BB_ANIM_TIME){
1356                         if(split_offset==PART_BB_OFF_NONE)
1357                                 time=pa_time;
1358                         else if(split_offset==PART_BB_OFF_LINEAR)
1359                                 time=(float)fmod(pa_time+(float)p/(float)(uv_split*uv_split),1.0f);
1360                         else /* split_offset==PART_BB_OFF_RANDOM */
1361                                 time=(float)fmod(pa_time+random,1.0f);
1362
1363                 }
1364                 else if(anim==PART_BB_ANIM_ANGLE){
1365                         if(align==PART_BB_VIEW){
1366                                 time=(float)fmod((tilt+1.0f)/2.0f,1.0);
1367                         }
1368                         else{
1369                                 float axis1[3]={0.0f,0.0f,0.0f};
1370                                 float axis2[3]={0.0f,0.0f,0.0f};
1371                                 axis1[(align+1)%3]=1.0f;
1372                                 axis2[(align+2)%3]=1.0f;
1373                                 if(lock==0){
1374                                         zvec[align]=0.0f;
1375                                         Normalize(zvec);
1376                                 }
1377                                 time=saacos(Inpf(zvec,axis1))/(float)M_PI;
1378                                 if(Inpf(zvec,axis2)<0.0f)
1379                                         time=1.0f-time/2.0f;
1380                                 else
1381                                         time=time/2.0f;
1382                         }
1383                         if(split_offset==PART_BB_OFF_LINEAR)
1384                                 time=(float)fmod(pa_time+(float)p/(float)(uv_split*uv_split),1.0f);
1385                         else if(split_offset==PART_BB_OFF_RANDOM)
1386                                 time=(float)fmod(pa_time+random,1.0f);
1387                 }
1388                 else{
1389                         if(split_offset==PART_BB_OFF_NONE)
1390                                 time=0.0f;
1391                         else if(split_offset==PART_BB_OFF_LINEAR)
1392                                 time=(float)fmod((float)p/(float)(uv_split*uv_split),1.0f);
1393                         else /* split_offset==PART_BB_OFF_RANDOM */
1394                                 time=random;
1395                 }
1396                 uvx=uvdx*floor((float)(uv_split*uv_split)*(float)fmod((double)time,(double)uvdx));
1397                 uvy=uvdy*floor((1.0f-time)*(float)uv_split);
1398                 if(fmod(time,1.0f/uv_split)==0.0f)
1399                         uvy-=uvdy;
1400         }
1401
1402         /* normal UVs */
1403         if(uv[0]>=0){
1404                 mtf=RE_vlakren_get_tface(obr,vlr,uv[0],NULL,1);
1405                 mtf->uv[0][0]=1.0f;
1406                 mtf->uv[0][1]=1.0f;
1407                 mtf->uv[1][0]=0.0f;
1408                 mtf->uv[1][1]=1.0f;
1409                 mtf->uv[2][0]=0.0f;
1410                 mtf->uv[2][1]=0.0f;
1411                 mtf->uv[3][0]=1.0f;
1412                 mtf->uv[3][1]=0.0f;
1413         }
1414
1415         /* time-index UVs */
1416         if(uv[1]>=0){
1417                 mtf=RE_vlakren_get_tface(obr,vlr,uv[1],NULL,1);
1418                 mtf->uv[0][0]=mtf->uv[1][0]=mtf->uv[2][0]=mtf->uv[3][0]=pa_time;
1419                 mtf->uv[0][1]=mtf->uv[1][1]=mtf->uv[2][1]=mtf->uv[3][1]=(float)p/(float)totpart;
1420         }
1421
1422         /* split UVs */
1423         if(uv_split>1 && uv[2]>=0){
1424                 mtf=RE_vlakren_get_tface(obr,vlr,uv[2],NULL,1);
1425                 mtf->uv[0][0]=uvx+uvdx;
1426                 mtf->uv[0][1]=uvy+uvdy;
1427                 mtf->uv[1][0]=uvx;
1428                 mtf->uv[1][1]=uvy+uvdy;
1429                 mtf->uv[2][0]=uvx;
1430                 mtf->uv[2][1]=uvy;
1431                 mtf->uv[3][0]=uvx+uvdx;
1432                 mtf->uv[3][1]=uvy;
1433         }
1434 }
1435 static void render_new_particle(Render *re, ObjectRen *obr, DerivedMesh *dm, Material *ma, int path, int first, int line,
1436                                                                 float time, float *loc, float *loc1, float *orco, float *surfnor, int totuv, float *uvco,
1437                                                                 int totcol, MCol *mcol, float size, int seed, int override_uv,
1438                                                                 int adapt, float adapt_angle, float adapt_pix)
1439 {
1440         HaloRen *har=0;
1441         if(path){
1442                 if(ma->mode&MA_WIRE)
1443                         static_particle_wire(obr, ma, loc, loc1, first, line);
1444                 else if(ma->mode & MA_HALO){
1445                         har= RE_inithalo_particle(re, obr, dm, ma, loc, loc1, orco, uvco, size, 1.0, seed);
1446                         if(har) har->lay= obr->ob->lay;
1447                 }
1448                 else
1449                         static_particle_strand(re, obr, ma, orco, surfnor, uvco, totuv, mcol, totcol, loc, loc1, time, first, line, adapt, adapt_angle, adapt_pix, override_uv);
1450         }
1451         else{
1452                 har= RE_inithalo_particle(re, obr, dm, ma, loc, NULL, orco, uvco, size, 0.0, seed);
1453                 if(har) har->lay= obr->ob->lay;
1454         }
1455 }
1456 static int render_new_particle_system(Render *re, ObjectRen *obr, ParticleSystem *psys, int timeoffset)
1457 {
1458         Object *ob= obr->ob;
1459         Object *tob=0, *bb_ob=re->scene->camera;
1460         Material *ma=0;
1461         MTFace *mtface;
1462         ParticleSystemModifierData *psmd;
1463         ParticleSystem *tpsys=0;
1464         ParticleSettings *part, *tpart=0;
1465         ParticleData *pars, *pa=0,*tpa=0;
1466         ParticleKey *states=0;
1467         ParticleKey state;
1468         ParticleCacheKey *cache=0;
1469         StrandBuffer *strandbuf=0;
1470         StrandVert *svert=0;
1471         StrandBound *sbound= 0;
1472         StrandRen *strand=0;
1473         RNG *rng= 0;
1474         MCol *mcol= 0;
1475         float loc[3],loc1[3],loc0[3],vel[3],mat[4][4],nmat[3][3],co[3],nor[3],time;
1476         float *orco=0,*surfnor=0,*uvco=0, strandlen=0.0f, curlen=0.0f;
1477         float hasize, pa_size, pa_time, r_tilt, cfra=bsystem_time(ob,(float)CFRA,0.0);
1478         float adapt_angle=0.0, adapt_pix=0.0, random, simplify[2];
1479         int i, a, k, max_k=0, totpart, totuv=0, totcol=0, override_uv=-1, dosimplify = 0, dosurfacecache = 0;
1480         int path_possible=0, keys_possible=0, baked_keys=0, totchild=0;
1481         int seed, path_nbr=0, path=0, orco1=0, adapt=0, uv[3]={0,0,0}, num;
1482         int totface, *origindex = 0;
1483         char **uv_name=0;
1484
1485 /* 1. check that everything is ok & updated */
1486         if(psys==NULL)
1487                 return 0;
1488
1489         totchild=psys->totchild;
1490
1491         part=psys->part;
1492         pars=psys->particles;
1493
1494         if(part==NULL || pars==NULL || !psys_check_enabled(ob, psys))
1495                 return 0;
1496
1497         if(part->draw_as==PART_DRAW_OB || part->draw_as==PART_DRAW_GR || part->draw_as==PART_DRAW_NOT)
1498                 return 1;
1499
1500 /* 2. start initialising things */
1501         if(part->phystype==PART_PHYS_KEYED){
1502                 if(psys->flag & PSYS_FIRST_KEYED)
1503                         psys_count_keyed_targets(ob,psys);
1504                 else
1505                         return 1;
1506         }
1507
1508         psmd= psys_get_modifier(ob,psys);
1509         if(!(psmd->modifier.mode & eModifierMode_Render))
1510                 return 0;
1511
1512         if(G.rendering == 0) { /* preview render */
1513                 totchild = (int)((float)totchild * (float)part->disp / 100.0f);
1514         }
1515
1516         psys->flag|=PSYS_DRAWING;
1517
1518         rng= rng_new(psys->seed);
1519
1520         ma= give_render_material(re, ob, part->omat);
1521
1522         if(part->bb_ob)
1523                 bb_ob=part->bb_ob;
1524
1525         if(ma->ipo){
1526                 calc_ipo(ma->ipo, cfra);
1527                 execute_ipo((ID *)ma, ma->ipo);
1528         }
1529
1530         RE_set_customdata_names(obr, &psmd->dm->faceData);
1531         totuv=CustomData_number_of_layers(&psmd->dm->faceData,CD_MTFACE);
1532         totcol=CustomData_number_of_layers(&psmd->dm->faceData,CD_MCOL);
1533
1534         if(ma->texco & TEXCO_UV && totuv) {
1535                 uvco = MEM_callocN(totuv*2*sizeof(float),"particle_uvs");
1536
1537                 if(ma->strand_uvname[0]) {
1538                         override_uv= CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,ma->strand_uvname);
1539                         override_uv-= CustomData_get_layer_index(&psmd->dm->faceData,CD_MTFACE);
1540                 }
1541         }
1542
1543         if(totcol)
1544                 mcol = MEM_callocN(totcol*sizeof(MCol),"particle_mcols");
1545
1546         if(part->draw_as==PART_DRAW_BB){
1547                 int first_uv=CustomData_get_layer_index(&psmd->dm->faceData,CD_MTFACE);
1548
1549                 uv[0]=CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,psys->bb_uvname[0]);
1550                 if(uv[0]<0)
1551                         uv[0]=CustomData_get_active_layer_index(&psmd->dm->faceData,CD_MTFACE);
1552
1553                 uv[1]=CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,psys->bb_uvname[1]);
1554                 //if(uv[1]<0)
1555                 //      uv[1]=CustomData_get_active_layer_index(&psmd->dm->faceData,CD_MTFACE);
1556
1557                 uv[2]=CustomData_get_named_layer_index(&psmd->dm->faceData,CD_MTFACE,psys->bb_uvname[2]);
1558                 //if(uv[2]<0)
1559                 //      uv[2]=CustomData_get_active_layer_index(&psmd->dm->faceData,CD_MTFACE);
1560
1561                 if(first_uv>=0){
1562                         uv[0]-=first_uv;
1563                         uv[1]-=first_uv;
1564                         uv[2]-=first_uv;
1565                 }
1566         }
1567
1568         if(part->flag&PART_ABS_TIME && part->ipo){
1569                 calc_ipo(part->ipo, cfra);
1570                 execute_ipo((ID *)part, part->ipo);
1571         }
1572
1573         if(part->flag&PART_GLOB_TIME)
1574                 cfra=bsystem_time(0,(float)CFRA,0.0);
1575
1576         if(part->type==PART_REACTOR){
1577                 psys_get_reactor_target(ob, psys, &tob, &tpsys);
1578                 if(tpsys && (part->from==PART_FROM_PARTICLE || part->phystype==PART_PHYS_NO)){
1579                         psmd=psys_get_modifier(tob,tpsys);
1580                         tpart=tpsys->part;
1581                 }
1582         }
1583
1584         hasize = ma->hasize;
1585         seed = ma->seed1;
1586
1587         re->flag |= R_HALO;
1588
1589         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
1590         MTC_Mat4Invert(ob->imat, mat);  /* need to be that way, for imat texture */
1591         Mat3CpyMat4(nmat, ob->imat);
1592         Mat3Transp(nmat);
1593
1594         totpart=psys->totpart;
1595
1596         if(psys->pathcache){
1597                 path_possible=1;
1598                 keys_possible=1;
1599         }
1600         if(part->draw_as==PART_DRAW_PATH){
1601                 if(path_possible){
1602                         path_nbr=(int)pow(2.0,(double) part->ren_step);
1603                         //if(part->phystype==PART_PHYS_KEYED && (psys->flag&PSYS_BAKED)==0)
1604                         //      path_nbr*=psys->totkeyed;
1605
1606                         if(path_nbr) {
1607                                 if((ma->mode & (MA_HALO|MA_WIRE))==0) {
1608                                         orco= MEM_mallocN(3*sizeof(float)*(totpart+totchild), "particle orcos");
1609                                         set_object_orco(re, psys, orco);
1610                                 }
1611                                 path=1;
1612                         }
1613
1614                         if(part->draw&PART_DRAW_REN_ADAPT) {
1615                                 adapt=1;
1616                                 adapt_pix=(float)part->adapt_pix;
1617                                 adapt_angle=cos((float)part->adapt_angle*(float)(M_PI/180.0));
1618                         }
1619
1620                         if(re->r.renderer==R_INTERN && part->draw&PART_DRAW_REN_STRAND) {
1621                                 strandbuf= RE_addStrandBuffer(obr, (totpart+totchild)*(path_nbr+1));
1622                                 strandbuf->ma= ma;
1623                                 strandbuf->lay= ob->lay;
1624                                 Mat4CpyMat4(strandbuf->winmat, re->winmat);
1625                                 strandbuf->winx= re->winx;
1626                                 strandbuf->winy= re->winy;
1627                                 strandbuf->maxdepth= 2;
1628                                 strandbuf->adaptcos= cos((float)part->adapt_angle*(float)(M_PI/180.0));
1629                                 strandbuf->overrideuv= override_uv;
1630                                 strandbuf->minwidth= ma->strand_min;
1631
1632                                 if(ma->strand_widthfade == 0.0f)
1633                                         strandbuf->widthfade= 0.0f;
1634                                 else if(ma->strand_widthfade >= 1.0f)
1635                                         strandbuf->widthfade= 2.0f - ma->strand_widthfade;
1636                                 else
1637                                         strandbuf->widthfade= 1.0f/MAX2(ma->strand_widthfade, 1e-5f);
1638
1639                                 if(part->flag & PART_HAIR_BSPLINE)
1640                                         strandbuf->flag |= R_STRAND_BSPLINE;
1641                                 if(ma->mode & MA_STR_B_UNITS)
1642                                         strandbuf->flag |= R_STRAND_B_UNITS;
1643
1644                                 svert= strandbuf->vert;
1645
1646                                 if(re->r.mode & R_SPEED)
1647                                         dosurfacecache= 1;
1648                                 else if((re->wrld.mode & WO_AMB_OCC) && (re->wrld.ao_gather_method == WO_AOGATHER_APPROX))
1649                                         if(ma->amb != 0.0f)
1650                                                 dosurfacecache= 1;
1651
1652                                 totface= psmd->dm->getNumFaces(psmd->dm);
1653                                 origindex= psmd->dm->getFaceDataArray(psmd->dm, CD_ORIGINDEX);
1654                                 if(origindex) {
1655                                         for(a=0; a<totface; a++)
1656                                                 strandbuf->totbound= MAX2(strandbuf->totbound, origindex[a]);
1657                                         strandbuf->totbound++;
1658                                 }
1659                                 strandbuf->totbound++;
1660                                 strandbuf->bound= MEM_callocN(sizeof(StrandBound)*strandbuf->totbound, "StrandBound");
1661                                 sbound= strandbuf->bound;
1662                                 sbound->start= sbound->end= 0;
1663                         }
1664                 }
1665         }
1666         else if(keys_possible && part->draw&PART_DRAW_KEYS){
1667                 path_nbr=part->keys_step;
1668                 if(path_nbr==0)
1669                         baked_keys=1;
1670         }
1671
1672         if(orco==0){
1673                 orco=MEM_mallocN(3*sizeof(float),"particle orco");
1674                 orco1=1;
1675         }
1676
1677         if(path_nbr==0)
1678                 psys->lattice=psys_get_lattice(ob,psys);
1679
1680 /* 3. start creating renderable things */
1681         for(a=0,pa=pars; a<totpart+totchild; a++, pa++, seed++) {
1682                 random = rng_getFloat(rng);
1683
1684                 if(a<totpart){
1685                         if(pa->flag & PARS_UNEXIST) continue;
1686
1687                         pa_time=(cfra-pa->time)/pa->lifetime;
1688                         if((part->flag&PART_ABS_TIME)==0){
1689                                 if(ma->ipo){
1690                                         /* correction for lifetime */
1691                                         calc_ipo(ma->ipo, 100.0f*pa_time);
1692                                         execute_ipo((ID *)ma, ma->ipo);
1693                                 }
1694                                 if(part->ipo){
1695                                         /* correction for lifetime */
1696                                         calc_ipo(part->ipo, 100.0f*pa_time);
1697                                         execute_ipo((ID *)part, part->ipo);
1698                                 }
1699                         }
1700
1701                         hasize = ma->hasize;
1702
1703                         /* get orco */
1704                         if(tpsys && (part->from==PART_FROM_PARTICLE || part->phystype==PART_PHYS_NO)){
1705                                 tpa=tpsys->particles+pa->num;
1706                                 psys_particle_on_emitter(ob, psmd,tpart->from,tpa->num,pa->num_dmcache,tpa->fuv,tpa->foffset,co,nor,0,0,orco,0);
1707                         }
1708                         else
1709                                 psys_particle_on_emitter(ob, psmd,part->from,pa->num,pa->num_dmcache,pa->fuv,pa->foffset,co,nor,0,0,orco,0);
1710
1711                         num= pa->num_dmcache;
1712
1713                         if(num == DMCACHE_NOTFOUND)
1714                                 if(pa->num < psmd->dm->getNumFaces(psmd->dm))
1715                                         num= pa->num;
1716
1717                         if(uvco && ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1718                                 for(i=0; i<totuv; i++){
1719                                         if(num != DMCACHE_NOTFOUND) {
1720                                                 MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1721                                                 mtface=(MTFace*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MTFACE,i);
1722                                                 mtface+=num;
1723
1724                                                 psys_interpolate_uvs(mtface,mface->v4,pa->fuv,uvco+2*i);
1725                                         }
1726                                         else {
1727                                                 uvco[2*i]= 0.0f;
1728                                                 uvco[2*i + 1]= 0.0f;
1729                                         }
1730                                 }
1731                         }
1732                         if(mcol && ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1733                                 for(i=0; i<totcol; i++){
1734                                         if(num != DMCACHE_NOTFOUND) {
1735                                                 MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1736                                                 MCol *mc=(MCol*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MCOL,i);
1737                                                 mc+=num*4;
1738
1739                                                 psys_interpolate_mcol(mc,mface->v4,pa->fuv,mcol+i);
1740                                         }
1741                                         else
1742                                                 memset(&mcol[i], 0, sizeof(MCol));
1743                                 }
1744                         }
1745
1746                         pa_size=pa->size;
1747
1748                         r_tilt=1.0f+pa->r_ave[0];
1749
1750                         if(path_nbr){
1751                                 cache = psys->pathcache[a];
1752                                 max_k = (int)cache->steps;
1753                         }
1754
1755                         if(totchild && (part->draw&PART_DRAW_PARENT)==0) continue;
1756                 }
1757                 else {
1758                         ChildParticle *cpa= psys->child+a-totpart;
1759
1760                         pa_time=psys_get_child_time(psys, cpa, cfra);
1761
1762                         if((part->flag&PART_ABS_TIME)==0){
1763                                 if(ma->ipo){
1764                                         /* correction for lifetime */
1765                                         calc_ipo(ma->ipo, 100.0f*pa_time);
1766                                         execute_ipo((ID *)ma, ma->ipo);
1767                                 }
1768                                 if(part->ipo){
1769                                         /* correction for lifetime */
1770                                         calc_ipo(part->ipo, 100.0f*pa_time);
1771                                         execute_ipo((ID *)part, part->ipo);
1772                                 }
1773                         }
1774
1775                         pa_size=psys_get_child_size(psys, cpa, cfra, &pa_time);
1776
1777                         r_tilt=2.0f*cpa->rand[2];
1778
1779                         num= cpa->num;
1780
1781                         /* get orco */
1782                         if(part->childtype == PART_CHILD_FACES) {
1783                                 psys_particle_on_emitter(ob, psmd,
1784                                         PART_FROM_FACE, cpa->num,DMCACHE_ISCHILD,
1785                                         cpa->fuv,cpa->foffset,co,nor,0,0,orco,0);
1786                         }
1787                         else {
1788                                 ParticleData *par = psys->particles + cpa->parent;
1789                                 psys_particle_on_emitter(ob, psmd, part->from,
1790                                         par->num,DMCACHE_ISCHILD,par->fuv,
1791                                         par->foffset,co,nor,0,0,orco,0);
1792                         }
1793
1794                         if(uvco){
1795                                 if(part->from!=PART_FROM_PARTICLE && part->childtype==PART_CHILD_FACES){
1796                                         for(i=0; i<totuv; i++){
1797                                                 if(part->childtype==PART_CHILD_FACES){
1798                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,cpa->num,CD_MFACE);
1799
1800                                                         mtface=(MTFace*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MTFACE,i);
1801                                                         mtface+=cpa->num;
1802
1803                                                         psys_interpolate_uvs(mtface,mface->v4,cpa->fuv,uvco+2*i);
1804                                                 }
1805                                                 else{
1806                                                         uvco[2*i]=uvco[2*i+1]=0.0f;
1807                                                 }
1808                                         }
1809                                 }
1810                                 else if(ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1811                                         ParticleData *parent = psys->particles + cpa->parent;
1812                                         num= parent->num_dmcache;
1813
1814                                         if(num == DMCACHE_NOTFOUND)
1815                                                 if(parent->num < psmd->dm->getNumFaces(psmd->dm))
1816                                                         num= parent->num;
1817
1818                                         for(i=0; i<totuv; i++) {
1819                                                 if(num != DMCACHE_NOTFOUND) {
1820                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1821                                                         mtface=(MTFace*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MTFACE,i);
1822                                                         mtface+=num;
1823                                                         psys_interpolate_uvs(mtface,mface->v4,parent->fuv,uvco+2*i);
1824                                                 }
1825                                                 else {
1826                                                         uvco[2*i]= 0.0f;
1827                                                         uvco[2*i + 1]= 0.0f;
1828                                                 }
1829                                         }
1830                                 }
1831                         }
1832
1833                         if(mcol){
1834                                 if(part->from!=PART_FROM_PARTICLE && part->childtype==PART_CHILD_FACES){
1835                                         for(i=0; i<totcol; i++){
1836                                                 if(part->childtype==PART_CHILD_FACES){
1837                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,cpa->num,CD_MFACE);
1838                                                         MCol *mc=(MCol*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MCOL,i);
1839                                                         mc+=cpa->num*4;
1840
1841                                                         psys_interpolate_mcol(mc,mface->v4,cpa->fuv,mcol+i);
1842                                                 }
1843                                                 else
1844                                                         memset(&mcol[i], 0, sizeof(MCol));
1845                                         }
1846                                 }
1847                                 else if(ELEM(part->from,PART_FROM_FACE,PART_FROM_VOLUME)){
1848                                         ParticleData *parent = psys->particles + cpa->parent;
1849                                         num= parent->num_dmcache;
1850
1851                                         if(num == DMCACHE_NOTFOUND)
1852                                                 if(parent->num < psmd->dm->getNumFaces(psmd->dm))
1853                                                         num= parent->num;
1854
1855                                         for(i=0; i<totcol; i++){
1856                                                 if(num != DMCACHE_NOTFOUND) {
1857                                                         MFace *mface=psmd->dm->getFaceData(psmd->dm,num,CD_MFACE);
1858                                                         MCol *mc=(MCol*)CustomData_get_layer_n(&psmd->dm->faceData,CD_MCOL,i);
1859                                                         mc+=num*4;
1860
1861                                                         psys_interpolate_mcol(mc,mface->v4,parent->fuv,mcol+i);
1862                                                 }
1863                                                 else
1864                                                         memset(&mcol[i], 0, sizeof(MCol));
1865                                         }
1866                                 }
1867                         }
1868
1869                         dosimplify= psys_render_simplify_params(psys, cpa, simplify);
1870
1871                         if(path_nbr) {
1872                                 cache = psys->childcache[a-totpart];
1873                                 max_k = (int)cache->steps;
1874                         }
1875
1876                         if(strandbuf) {
1877                                 if(origindex[cpa->num]+1 > sbound - strandbuf->bound) {
1878                                         sbound= strandbuf->bound + origindex[cpa->num]+1;
1879                                         sbound->start= sbound->end= obr->totstrand;
1880                                 }
1881                         }
1882                 }
1883
1884                 /* surface normal shading setup */
1885                 if(ma->mode_l & MA_STR_SURFDIFF) {
1886                         Mat3MulVecfl(nmat, nor);
1887                         surfnor= nor;
1888                 }
1889                 else
1890                         surfnor= NULL;
1891
1892                 /* strand render setup */
1893                 if(strandbuf) {
1894                         strand= RE_findOrAddStrand(obr, obr->totstrand++);
1895                         strand->buffer= strandbuf;
1896                         strand->vert= svert;
1897                         VECCOPY(strand->orco, orco);
1898
1899                         if(dosimplify) {
1900                                 float *ssimplify= RE_strandren_get_simplify(obr, strand, 1);
1901                                 ssimplify[0]= simplify[0];
1902                                 ssimplify[1]= simplify[1];
1903                         }
1904
1905                         if(surfnor) {
1906                                 float *snor= RE_strandren_get_surfnor(obr, strand, 1);
1907                                 VECCOPY(snor, surfnor);
1908                         }
1909
1910                         if(dosurfacecache && num >= 0) {
1911                                 int *facenum= RE_strandren_get_face(obr, strand, 1);
1912                                 *facenum= num;
1913                         }
1914
1915                         if(uvco) {
1916                                 for(i=0; i<totuv; i++) {
1917                                         if(i != override_uv) {
1918                                                 float *uv= RE_strandren_get_uv(obr, strand, i, NULL, 1);
1919
1920                                                 uv[0]= uvco[2*i];
1921                                                 uv[1]= uvco[2*i+1];
1922                                         }
1923                                 }
1924                         }
1925                         if(mcol) {
1926                                 for(i=0; i<totcol; i++) {
1927                                         MCol *mc= RE_strandren_get_mcol(obr, strand, i, NULL, 1);
1928                                         *mc = mcol[i];
1929                                 }
1930                         }
1931
1932                         sbound->end++;
1933                 }
1934
1935                 /* strandco computation setup */
1936                 if(path_nbr) {
1937                         strandlen= 0.0f;
1938                         curlen= 0.0f;
1939                         for(k=1; k<=path_nbr; k++)
1940                                 if(k<=max_k)
1941                                         strandlen += VecLenf((cache+k-1)->co, (cache+k)->co);
1942                 }
1943
1944                 for(k=0; k<=path_nbr; k++){
1945                         if(path_nbr){
1946                                 if(k<=max_k){
1947                                         //bti->convert_bake_key(bsys,cache+k,0,(void*)&state);
1948                                         //copy_particle_key(&state,cache+k,0);
1949                                         VECCOPY(state.co,(cache+k)->co);
1950                                         VECCOPY(state.vel,(cache+k)->vel);
1951                                 }
1952                                 else
1953                                         continue;
1954
1955                                 if(k > 0)
1956                                         curlen += VecLenf((cache+k-1)->co, (cache+k)->co);
1957                                 time= curlen/strandlen;
1958                         }
1959                         else{
1960                                 time=0.0f;
1961                                 state.time=cfra;
1962                                 if(psys_get_particle_state(ob,psys,a,&state,0)==0)
1963                                         continue;
1964                         }
1965
1966                         VECCOPY(loc,state.co);
1967                         if(part->draw_as!=PART_DRAW_BB)
1968                                 MTC_Mat4MulVecfl(re->viewmat,loc);
1969
1970                         if(part->draw_as==PART_DRAW_LINE) {
1971                                 VECCOPY(vel,state.vel);
1972                                 //VECADD(vel,vel,state.co);
1973                                 MTC_Mat4Mul3Vecfl(re->viewmat,vel);
1974                                 //VECSUB(vel,vel,loc);
1975                                 Normalize(vel);
1976                                 if(part->draw & PART_DRAW_VEL_LENGTH)
1977                                         VecMulf(vel,VecLength(state.vel));
1978                                 VECADDFAC(loc0,loc,vel,-part->draw_line[0]);
1979                                 VECADDFAC(loc1,loc,vel,part->draw_line[1]);
1980
1981                                 render_new_particle(re,obr,psmd->dm,ma,1,0,1,0.0f,loc0,loc1,
1982                                                                         orco,surfnor,totuv,uvco,totcol,mcol,hasize,seed,override_uv,0,0,0);
1983                         }
1984                         else if(part->draw_as==PART_DRAW_BB) {
1985                                 VECCOPY(vel,state.vel);
1986                                 //MTC_Mat4Mul3Vecfl(re->viewmat,vel);
1987                                 particle_billboard(re,obr,ma,bb_ob,loc,vel,pa_size,part->bb_tilt*(1.0f-part->bb_rand_tilt*r_tilt),
1988                                                                         part->bb_align,part->draw&PART_DRAW_BB_LOCK,
1989                                                                         a,totpart+totchild,part->bb_uv_split,part->bb_anim,part->bb_split_offset,random,pa_time,part->bb_offset,uv);
1990                         }
1991                         else if(strandbuf) {
1992                                 VECCOPY(svert->co, loc);
1993                                 svert->strandco= -1.0f + 2.0f*time;
1994                                 svert++;
1995                                 strand->totvert++;
1996                         }
1997                         else{
1998                                 if(k==1){
1999                                         VECSUB(loc0,loc1,loc);
2000                                         VECADD(loc0,loc1,loc0);
2001                                         render_new_particle(re,obr,psmd->dm,ma,path,1,0,0.0f,loc1,loc0,
2002                                                                                 orco,surfnor,totuv,uvco,totcol,mcol,hasize,seed,override_uv,
2003                                                                                 adapt,adapt_angle,adapt_pix);
2004                                 }
2005
2006                                 if(path_nbr==0 || k)
2007                                         render_new_particle(re,obr,psmd->dm,ma,path,0,0,time,loc,loc1,
2008                                                                                 orco,surfnor,totuv,uvco,totcol,mcol,hasize,seed,override_uv,
2009                                                                                 adapt,adapt_angle,adapt_pix);
2010
2011                                 VECCOPY(loc1,loc);
2012                         }
2013                 }
2014
2015                 if(orco1==0)
2016                         orco+=3;
2017
2018                 if(re->test_break())
2019                         break;
2020         }
2021
2022         if(dosurfacecache)
2023                 strandbuf->surface= cache_strand_surface(re, obr, psmd->dm, mat, timeoffset);
2024
2025 /* 4. clean up */
2026         if(ma) do_mat_ipo(ma);
2027
2028         if(orco1)
2029                 MEM_freeN(orco);
2030
2031         if(uvco)
2032                 MEM_freeN(uvco);
2033
2034         if(mcol)
2035                 MEM_freeN(mcol);
2036
2037         if(uv_name)
2038                 MEM_freeN(uv_name);
2039
2040         if(states)
2041                 MEM_freeN(states);
2042
2043         rng_free(rng);
2044
2045         psys->flag &= ~PSYS_DRAWING;
2046
2047         if(psys->lattice){
2048                 end_latt_deform();
2049                 psys->lattice=0;
2050         }
2051
2052         if(path && (ma->mode_l & MA_TANGENT_STR)==0)
2053                 calc_vertexnormals(re, obr, 0, 0);
2054
2055         return 1;
2056 }
2057
2058 /* ------------------------------------------------------------------------- */
2059 /* Halo's                                                                                                                                */
2060 /* ------------------------------------------------------------------------- */
2061
2062 static void make_render_halos(Render *re, ObjectRen *obr, Mesh *me, int totvert, MVert *mvert, Material *ma, float *orco)
2063 {
2064         Object *ob= obr->ob;
2065         HaloRen *har;
2066         float xn, yn, zn, nor[3], view[3];
2067         float vec[3], hasize, mat[4][4], imat[3][3];
2068         int a, ok, seed= ma->seed1;
2069
2070         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2071         MTC_Mat3CpyMat4(imat, ob->imat);
2072
2073         re->flag |= R_HALO;
2074
2075         for(a=0; a<totvert; a++, mvert++) {
2076                 ok= 1;
2077
2078                 if(ok) {
2079                         hasize= ma->hasize;
2080
2081                         VECCOPY(vec, mvert->co);
2082                         MTC_Mat4MulVecfl(mat, vec);
2083
2084                         if(ma->mode & MA_HALOPUNO) {
2085                                 xn= mvert->no[0];
2086                                 yn= mvert->no[1];
2087                                 zn= mvert->no[2];
2088
2089                                 /* transpose ! */
2090                                 nor[0]= imat[0][0]*xn+imat[0][1]*yn+imat[0][2]*zn;
2091                                 nor[1]= imat[1][0]*xn+imat[1][1]*yn+imat[1][2]*zn;
2092                                 nor[2]= imat[2][0]*xn+imat[2][1]*yn+imat[2][2]*zn;
2093                                 Normalize(nor);
2094
2095                                 VECCOPY(view, vec);
2096                                 Normalize(view);
2097
2098                                 zn= nor[0]*view[0]+nor[1]*view[1]+nor[2]*view[2];
2099                                 if(zn>=0.0) hasize= 0.0;
2100                                 else hasize*= zn*zn*zn*zn;
2101                         }
2102
2103                         if(orco) har= RE_inithalo(re, obr, ma, vec, NULL, orco, hasize, 0.0, seed);
2104                         else har= RE_inithalo(re, obr, ma, vec, NULL, mvert->co, hasize, 0.0, seed);
2105                         if(har) har->lay= ob->lay;
2106                 }
2107                 if(orco) orco+= 3;
2108                 seed++;
2109         }
2110 }
2111
2112 static int verghalo(const void *a1, const void *a2)
2113 {
2114         const HaloRen *har1= *(const HaloRen**)a1;
2115         const HaloRen *har2= *(const HaloRen**)a2;
2116
2117         if(har1->zs < har2->zs) return 1;
2118         else if(har1->zs > har2->zs) return -1;
2119         return 0;
2120 }
2121
2122 static void sort_halos(Render *re, int totsort)
2123 {
2124         ObjectRen *obr;
2125         HaloRen *har= NULL, **haso;
2126         int a;
2127
2128         if(re->tothalo==0) return;
2129
2130         re->sortedhalos= MEM_callocN(sizeof(HaloRen*)*re->tothalo, "sorthalos");
2131         haso= re->sortedhalos;
2132
2133         for(obr=re->objecttable.first; obr; obr=obr->next) {
2134                 for(a=0; a<obr->tothalo; a++) {
2135                         if((a & 255)==0) har= obr->bloha[a>>8];
2136                         else har++;
2137
2138                         *(haso++)= har;
2139                 }
2140         }
2141
2142         qsort(re->sortedhalos, totsort, sizeof(HaloRen*), verghalo);
2143 }
2144
2145 /* ------------------------------------------------------------------------- */
2146 /* Displacement Mapping                                                                                                          */
2147 /* ------------------------------------------------------------------------- */
2148
2149 static short test_for_displace(Render *re, Object *ob)
2150 {
2151         /* return 1 when this object uses displacement textures. */
2152         Material *ma;
2153         int i;
2154
2155         for (i=1; i<=ob->totcol; i++) {
2156                 ma=give_render_material(re, ob, i);
2157                 /* ma->mapto is ORed total of all mapto channels */
2158                 if(ma && (ma->mapto & MAP_DISPLACE)) return 1;
2159         }
2160         return 0;
2161 }
2162
2163 static void displace_render_vert(Render *re, ObjectRen *obr, ShadeInput *shi, VertRen *vr, int vindex, float *scale, float mat[][4], float imat[][3])
2164 {
2165         MTFace *tface;
2166         short texco= shi->mat->texco;
2167         float sample=0, displace[3];
2168         char *name;
2169         int i;
2170
2171         /* shi->co is current render coord, just make sure at least some vector is here */
2172         VECCOPY(shi->co, vr->co);
2173         /* vertex normal is used for textures type 'col' and 'var' */
2174         VECCOPY(shi->vn, vr->n);
2175
2176         if(mat)
2177                 Mat4MulVecfl(mat, shi->co);
2178
2179         if(imat) {
2180                 shi->vn[0]= imat[0][0]*vr->n[0]+imat[0][1]*vr->n[1]+imat[0][2]*vr->n[2];
2181                 shi->vn[1]= imat[1][0]*vr->n[0]+imat[1][1]*vr->n[1]+imat[1][2]*vr->n[2];
2182                 shi->vn[2]= imat[2][0]*vr->n[0]+imat[2][1]*vr->n[1]+imat[2][2]*vr->n[2];
2183         }
2184
2185         if (texco & TEXCO_UV) {
2186                 shi->totuv= 0;
2187                 shi->actuv= obr->actmtface;
2188
2189                 for (i=0; (tface=RE_vlakren_get_tface(obr, shi->vlr, i, &name, 0)); i++) {
2190                         ShadeInputUV *suv= &shi->uv[i];
2191
2192                         /* shi.uv needs scale correction from tface uv */
2193                         suv->uv[0]= 2*tface->uv[vindex][0]-1.0f;
2194                         suv->uv[1]= 2*tface->uv[vindex][1]-1.0f;
2195                         suv->uv[2]= 0.0f;
2196                         suv->name= name;
2197                         shi->totuv++;
2198                 }
2199         }
2200
2201         /* set all rendercoords, 'texco' is an ORed value for all textures needed */
2202         if ((texco & TEXCO_ORCO) && (vr->orco)) {
2203                 VECCOPY(shi->lo, vr->orco);
2204         }
2205         if (texco & TEXCO_STICKY) {
2206                 float *sticky= RE_vertren_get_sticky(obr, vr, 0);
2207                 if(sticky) {
2208                         shi->sticky[0]= sticky[0];
2209                         shi->sticky[1]= sticky[1];
2210                         shi->sticky[2]= 0.0f;
2211                 }
2212         }
2213         if (texco & TEXCO_GLOB) {
2214                 VECCOPY(shi->gl, shi->co);
2215                 MTC_Mat4MulVecfl(re->viewinv, shi->gl);
2216         }
2217         if (texco & TEXCO_NORM) {
2218                 VECCOPY(shi->orn, shi->vn);
2219         }
2220         if(texco & TEXCO_REFL) {
2221                 /* not (yet?) */
2222         }
2223
2224         shi->displace[0]= shi->displace[1]= shi->displace[2]= 0.0;
2225
2226         do_material_tex(shi);
2227
2228         //printf("no=%f, %f, %f\nbefore co=%f, %f, %f\n", vr->n[0], vr->n[1], vr->n[2],
2229         //vr->co[0], vr->co[1], vr->co[2]);
2230
2231         displace[0]= shi->displace[0] * scale[0];
2232         displace[1]= shi->displace[1] * scale[1];
2233         displace[2]= shi->displace[2] * scale[2];
2234
2235         if(mat)
2236                 Mat3MulVecfl(imat, displace);
2237
2238         /* 0.5 could become button once?  */
2239         vr->co[0] += displace[0];
2240         vr->co[1] += displace[1];
2241         vr->co[2] += displace[2];
2242
2243         //printf("after co=%f, %f, %f\n", vr->co[0], vr->co[1], vr->co[2]);
2244
2245         /* we just don't do this vertex again, bad luck for other face using same vertex with
2246                 different material... */
2247         vr->flag |= 1;
2248
2249         /* Pass sample back so displace_face can decide which way to split the quad */
2250         sample  = shi->displace[0]*shi->displace[0];
2251         sample += shi->displace[1]*shi->displace[1];
2252         sample += shi->displace[2]*shi->displace[2];
2253
2254         vr->accum=sample;
2255         /* Should be sqrt(sample), but I'm only looking for "bigger".  Save the cycles. */
2256         return;
2257 }
2258
2259 static void displace_render_face(Render *re, ObjectRen *obr, VlakRen *vlr, float *scale, float mat[][4], float imat[][3])
2260 {
2261         ShadeInput shi;
2262
2263         /* Warning, This is not that nice, and possibly a bit slow,
2264         however some variables were not initialized properly in, unless using shade_input_initialize(...), we need to do a memset */
2265         memset(&shi, 0, sizeof(ShadeInput));
2266         /* end warning! - Campbell */
2267
2268         /* set up shadeinput struct for multitex() */
2269
2270         /* memset above means we dont need this */
2271         /*shi.osatex= 0;*/              /* signal not to use dx[] and dy[] texture AA vectors */
2272
2273         shi.vlr= vlr;           /* current render face */
2274         shi.mat= vlr->mat;              /* current input material */
2275
2276         /* Displace the verts, flag is set when done */
2277         if (!vlr->v1->flag)
2278                 displace_render_vert(re, obr, &shi, vlr->v1,0,  scale, mat, imat);
2279
2280         if (!vlr->v2->flag)
2281                 displace_render_vert(re, obr, &shi, vlr->v2, 1, scale, mat, imat);
2282
2283         if (!vlr->v3->flag)
2284                 displace_render_vert(re, obr, &shi, vlr->v3, 2, scale, mat, imat);
2285
2286         if (vlr->v4) {
2287                 if (!vlr->v4->flag)
2288                         displace_render_vert(re, obr, &shi, vlr->v4, 3, scale, mat, imat);
2289
2290                 /*      closest in displace value.  This will help smooth edges.   */
2291                 if ( fabs(vlr->v1->accum - vlr->v3->accum) > fabs(vlr->v2->accum - vlr->v4->accum))
2292                         vlr->flag |= R_DIVIDE_24;
2293                 else vlr->flag &= ~R_DIVIDE_24;
2294         }
2295
2296         /* Recalculate the face normal  - if flipped before, flip now */
2297         if(vlr->v4) {
2298                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2299         }
2300         else {
2301                 CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2302         }
2303 }
2304
2305 static void do_displacement(Render *re, ObjectRen *obr, float mat[][4], float imat[][3])
2306 {
2307         VertRen *vr;
2308         VlakRen *vlr;
2309 //      float min[3]={1e30, 1e30, 1e30}, max[3]={-1e30, -1e30, -1e30};
2310         float scale[3]={1.0f, 1.0f, 1.0f}, temp[3];//, xn
2311         int i; //, texflag=0;
2312         Object *obt;
2313
2314         /* Object Size with parenting */
2315         obt=obr->ob;
2316         while(obt){
2317                 VecAddf(temp, obt->size, obt->dsize);
2318                 scale[0]*=temp[0]; scale[1]*=temp[1]; scale[2]*=temp[2];
2319                 obt=obt->parent;
2320         }
2321
2322         /* Clear all flags */
2323         for(i=0; i<obr->totvert; i++){
2324                 vr= RE_findOrAddVert(obr, i);
2325                 vr->flag= 0;
2326         }
2327
2328         for(i=0; i<obr->totvlak; i++){
2329                 vlr=RE_findOrAddVlak(obr, i);
2330                 displace_render_face(re, obr, vlr, scale, mat, imat);
2331         }
2332
2333         /* Recalc vertex normals */
2334         calc_vertexnormals(re, obr, 0, 0);
2335 }
2336
2337 /* ------------------------------------------------------------------------- */
2338 /* Metaball                                                                                                                              */
2339 /* ------------------------------------------------------------------------- */
2340
2341 static void init_render_mball(Render *re, ObjectRen *obr)
2342 {
2343         Object *ob= obr->ob;
2344         DispList *dl;
2345         VertRen *ver;
2346         VlakRen *vlr, *vlr1;
2347         Material *ma;
2348         float *data, *nors, *orco, mat[4][4], imat[3][3], xn, yn, zn;
2349         int a, need_orco, vlakindex, *index;
2350
2351         if (ob!=find_basis_mball(ob))
2352                 return;
2353
2354         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2355         MTC_Mat4Invert(ob->imat, mat);
2356         MTC_Mat3CpyMat4(imat, ob->imat);
2357
2358         ma= give_render_material(re, ob, 1);
2359
2360         need_orco= 0;
2361         if(ma->texco & TEXCO_ORCO) {
2362                 need_orco= 1;
2363         }
2364
2365         makeDispListMBall(ob);
2366         dl= ob->disp.first;
2367         if(dl==0) return;
2368
2369         data= dl->verts;
2370         nors= dl->nors;
2371         orco= get_object_orco(re, ob);
2372
2373         for(a=0; a<dl->nr; a++, data+=3, nors+=3, orco+=3) {
2374
2375                 ver= RE_findOrAddVert(obr, obr->totvert++);
2376                 VECCOPY(ver->co, data);
2377                 MTC_Mat4MulVecfl(mat, ver->co);
2378
2379                 /* render normals are inverted */
2380                 xn= -nors[0];
2381                 yn= -nors[1];
2382                 zn= -nors[2];
2383
2384                 /* transpose ! */
2385                 ver->n[0]= imat[0][0]*xn+imat[0][1]*yn+imat[0][2]*zn;
2386                 ver->n[1]= imat[1][0]*xn+imat[1][1]*yn+imat[1][2]*zn;
2387                 ver->n[2]= imat[2][0]*xn+imat[2][1]*yn+imat[2][2]*zn;
2388                 Normalize(ver->n);
2389                 //if(ob->transflag & OB_NEG_SCALE) VecMulf(ver->n. -1.0);
2390
2391                 if(need_orco) ver->orco= orco;
2392         }
2393
2394         index= dl->index;
2395         for(a=0; a<dl->parts; a++, index+=4) {
2396
2397                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2398                 vlr->v1= RE_findOrAddVert(obr, index[0]);
2399                 vlr->v2= RE_findOrAddVert(obr, index[1]);
2400                 vlr->v3= RE_findOrAddVert(obr, index[2]);
2401                 vlr->v4= 0;
2402
2403                 if(ob->transflag & OB_NEG_SCALE)
2404                         CalcNormFloat(vlr->v1->co, vlr->v2->co, vlr->v3->co, vlr->n);
2405                 else
2406                         CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2407
2408                 vlr->mat= ma;
2409                 vlr->flag= ME_SMOOTH+R_NOPUNOFLIP;
2410                 vlr->ec= 0;
2411
2412                 /* mball -too bad- always has triangles, because quads can be non-planar */
2413                 if(index[3] && index[3]!=index[2]) {
2414                         vlr1= RE_findOrAddVlak(obr, obr->totvlak++);
2415                         vlakindex= vlr1->index;
2416                         *vlr1= *vlr;
2417                         vlr1->index= vlakindex;
2418                         vlr1->v2= vlr1->v3;
2419                         vlr1->v3= RE_findOrAddVert(obr, index[3]);
2420                         if(ob->transflag & OB_NEG_SCALE)
2421                                 CalcNormFloat(vlr1->v1->co, vlr1->v2->co, vlr1->v3->co, vlr1->n);
2422                         else
2423                                 CalcNormFloat(vlr1->v3->co, vlr1->v2->co, vlr1->v1->co, vlr1->n);
2424                 }
2425         }
2426
2427         /* enforce display lists remade */
2428         freedisplist(&ob->disp);
2429
2430         /* this enforces remake for real, orco displist is small (in scale) */
2431         ob->recalc |= OB_RECALC_DATA;
2432 }
2433
2434 /* ------------------------------------------------------------------------- */
2435 /* Surfaces and Curves                                                                                                           */
2436 /* ------------------------------------------------------------------------- */
2437
2438 /* returns amount of vertices added for orco */
2439 static int dl_surf_to_renderdata(ObjectRen *obr, DispList *dl, Material **matar, float *orco, float mat[4][4])
2440 {
2441         Object *ob= obr->ob;
2442         VertRen *v1, *v2, *v3, *v4, *ver;
2443         VlakRen *vlr, *vlr1, *vlr2, *vlr3;
2444         Curve *cu= ob->data;
2445         float *data, n1[3], flen;
2446         int u, v, orcoret= 0;
2447         int p1, p2, p3, p4, a;
2448         int sizeu, nsizeu, sizev, nsizev;
2449         int startvert, startvlak;
2450
2451         startvert= obr->totvert;
2452         nsizeu = sizeu = dl->parts; nsizev = sizev = dl->nr;
2453
2454         data= dl->verts;
2455         for (u = 0; u < sizeu; u++) {
2456                 v1 = RE_findOrAddVert(obr, obr->totvert++); /* save this for possible V wrapping */
2457                 VECCOPY(v1->co, data); data += 3;
2458                 if(orco) {
2459                         v1->orco= orco; orco+= 3; orcoret++;
2460                 }
2461                 MTC_Mat4MulVecfl(mat, v1->co);
2462
2463                 for (v = 1; v < sizev; v++) {
2464                         ver= RE_findOrAddVert(obr, obr->totvert++);
2465                         VECCOPY(ver->co, data); data += 3;
2466                         if(orco) {
2467                                 ver->orco= orco; orco+= 3; orcoret++;
2468                         }
2469                         MTC_Mat4MulVecfl(mat, ver->co);
2470                 }
2471                 /* if V-cyclic, add extra vertices at end of the row */
2472                 if (dl->flag & DL_CYCL_U) {
2473                         ver= RE_findOrAddVert(obr, obr->totvert++);
2474                         VECCOPY(ver->co, v1->co);
2475                         if(orco) {
2476                                 ver->orco= orco; orco+=3; orcoret++; //orcobase + 3*(u*sizev + 0);
2477                         }
2478                 }
2479         }
2480
2481         /* Done before next loop to get corner vert */
2482         if (dl->flag & DL_CYCL_U) nsizev++;
2483         if (dl->flag & DL_CYCL_V) nsizeu++;
2484
2485         /* if U cyclic, add extra row at end of column */
2486         if (dl->flag & DL_CYCL_V) {
2487                 for (v = 0; v < nsizev; v++) {
2488                         v1= RE_findOrAddVert(obr, startvert + v);
2489                         ver= RE_findOrAddVert(obr, obr->totvert++);
2490                         VECCOPY(ver->co, v1->co);
2491                         if(orco) {
2492                                 ver->orco= orco; orco+=3; orcoret++; //ver->orco= orcobase + 3*(0*sizev + v);
2493                         }
2494                 }
2495         }
2496
2497         sizeu = nsizeu;
2498         sizev = nsizev;
2499
2500         startvlak= obr->totvlak;
2501
2502         for(u = 0; u < sizeu - 1; u++) {
2503                 p1 = startvert + u * sizev; /* walk through face list */
2504                 p2 = p1 + 1;
2505                 p3 = p2 + sizev;
2506                 p4 = p3 - 1;
2507
2508                 for(v = 0; v < sizev - 1; v++) {
2509                         v1= RE_findOrAddVert(obr, p1);
2510                         v2= RE_findOrAddVert(obr, p2);
2511                         v3= RE_findOrAddVert(obr, p3);
2512                         v4= RE_findOrAddVert(obr, p4);
2513
2514                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2515                         vlr->v1= v1; vlr->v2= v2; vlr->v3= v3; vlr->v4= v4;
2516
2517                         flen= CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, n1);
2518                         VECCOPY(vlr->n, n1);
2519
2520                         vlr->mat= matar[ dl->col];
2521                         vlr->ec= ME_V1V2+ME_V2V3;
2522                         vlr->flag= dl->rt;
2523                         if( (cu->flag & CU_NOPUNOFLIP) ) {
2524                                 vlr->flag |= R_NOPUNOFLIP;
2525                         }
2526
2527                         VecAddf(v1->n, v1->n, n1);
2528                         VecAddf(v2->n, v2->n, n1);
2529                         VecAddf(v3->n, v3->n, n1);
2530                         VecAddf(v4->n, v4->n, n1);
2531
2532                         p1++; p2++; p3++; p4++;
2533                 }
2534         }
2535         /* fix normals for U resp. V cyclic faces */
2536         sizeu--; sizev--;  /* dec size for face array */
2537         if (dl->flag & DL_CYCL_V) {
2538
2539                 for (v = 0; v < sizev; v++)
2540                 {
2541                         /* optimize! :*/
2542                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, v));
2543                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0, v));
2544                         VecAddf(vlr1->v1->n, vlr1->v1->n, vlr->n);
2545                         VecAddf(vlr1->v2->n, vlr1->v2->n, vlr->n);
2546                         VecAddf(vlr->v3->n, vlr->v3->n, vlr1->n);
2547                         VecAddf(vlr->v4->n, vlr->v4->n, vlr1->n);
2548                 }
2549         }
2550         if (dl->flag & DL_CYCL_U) {
2551
2552                 for (u = 0; u < sizeu; u++)
2553                 {
2554                         /* optimize! :*/
2555                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(u, 0));
2556                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(u, sizev-1));
2557                         VecAddf(vlr1->v2->n, vlr1->v2->n, vlr->n);
2558                         VecAddf(vlr1->v3->n, vlr1->v3->n, vlr->n);
2559                         VecAddf(vlr->v1->n, vlr->v1->n, vlr1->n);
2560                         VecAddf(vlr->v4->n, vlr->v4->n, vlr1->n);
2561                 }
2562         }
2563         /* last vertex is an extra case:
2564
2565                 ^       ()----()----()----()
2566                 |       |     |     ||     |
2567                 u       |     |(0,n)||(0,0)|
2568                 |     |     ||     |
2569                 ()====()====[]====()
2570                 |     |     ||     |
2571                 |     |(m,n)||(m,0)|
2572                 |     |     ||     |
2573                 ()----()----()----()
2574                 v ->
2575
2576                 vertex [] is no longer shared, therefore distribute
2577                 normals of the surrounding faces to all of the duplicates of []
2578                 */
2579
2580         if ((dl->flag & DL_CYCL_V) && (dl->flag & DL_CYCL_U))
2581         {
2582                 vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, sizev - 1)); /* (m,n) */
2583                 vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0,0));  /* (0,0) */
2584                 VecAddf(n1, vlr->n, vlr1->n);
2585                 vlr2= RE_findOrAddVlak(obr, UVTOINDEX(0, sizev-1)); /* (0,n) */
2586                 VecAddf(n1, n1, vlr2->n);
2587                 vlr3= RE_findOrAddVlak(obr, UVTOINDEX(sizeu-1, 0)); /* (m,0) */
2588                 VecAddf(n1, n1, vlr3->n);
2589                 VECCOPY(vlr->v3->n, n1);
2590                 VECCOPY(vlr1->v1->n, n1);
2591                 VECCOPY(vlr2->v2->n, n1);
2592                 VECCOPY(vlr3->v4->n, n1);
2593         }
2594         for(a = startvert; a < obr->totvert; a++) {
2595                 ver= RE_findOrAddVert(obr, a);
2596                 Normalize(ver->n);
2597         }
2598
2599
2600         return orcoret;
2601 }
2602
2603 static void init_render_surf(Render *re, ObjectRen *obr)
2604 {
2605         Object *ob= obr->ob;
2606         Nurb *nu=0;
2607         Curve *cu;
2608         ListBase displist;
2609         DispList *dl;
2610         Material *matar[32];
2611         float *orco=NULL, *orcobase=NULL, mat[4][4];
2612         int a, need_orco=0;
2613
2614         cu= ob->data;
2615         nu= cu->nurb.first;
2616         if(nu==0) return;
2617
2618         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2619         MTC_Mat4Invert(ob->imat, mat);
2620
2621         /* material array */
2622         memset(matar, 0, 4*32);
2623         matar[0]= give_render_material(re, ob, 0);
2624         for(a=0; a<ob->totcol; a++) {
2625                 matar[a]= give_render_material(re, ob, a+1);
2626                 if(matar[a] && matar[a]->texco & TEXCO_ORCO) {
2627                         need_orco= 1;
2628                 }
2629         }
2630
2631         if(ob->parent && (ob->parent->type==OB_LATTICE)) need_orco= 1;
2632
2633         if(need_orco) orcobase= orco= get_object_orco(re, ob);
2634
2635         displist.first= displist.last= 0;
2636         makeDispListSurf(ob, &displist, 1);
2637
2638         dl= displist.first;
2639         /* walk along displaylist and create rendervertices/-faces */
2640         while(dl) {
2641                         /* watch out: u ^= y, v ^= x !! */
2642                 if(dl->type==DL_SURF) {
2643                         orco+= 3*dl_surf_to_renderdata(obr, dl, matar, orco, mat);
2644                 }
2645
2646                 dl= dl->next;
2647         }
2648         freedisplist(&displist);
2649 }
2650
2651 static void init_render_curve(Render *re, ObjectRen *obr, int timeoffset)
2652 {
2653         Object *ob= obr->ob;
2654         Curve *cu;
2655         VertRen *ver;
2656         VlakRen *vlr;
2657         DispList *dl;
2658         ListBase olddl={NULL, NULL};
2659         Material *matar[32];
2660         float len, *data, *fp, *orco=NULL, *orcobase= NULL;
2661         float n[3], mat[4][4];
2662         int nr, startvert, startvlak, a, b;
2663         int frontside, need_orco=0;
2664
2665         cu= ob->data;
2666         if(ob->type==OB_FONT && cu->str==NULL) return;
2667         else if(ob->type==OB_CURVE && cu->nurb.first==NULL) return;
2668
2669         /* no modifier call here, is in makedisp */
2670
2671         if(cu->resolu_ren)
2672                 SWAP(ListBase, olddl, cu->disp);
2673
2674         /* test displist */
2675         if(cu->disp.first==NULL)
2676                 makeDispListCurveTypes(ob, 0);
2677         dl= cu->disp.first;
2678         if(cu->disp.first==NULL) return;
2679
2680         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2681         MTC_Mat4Invert(ob->imat, mat);
2682
2683         /* material array */
2684         memset(matar, 0, 4*32);
2685         matar[0]= give_render_material(re, ob, 0);
2686         for(a=0; a<ob->totcol; a++) {
2687                 matar[a]= give_render_material(re, ob, a+1);
2688                 if(matar[a]->texco & TEXCO_ORCO) {
2689                         need_orco= 1;
2690                 }
2691         }
2692
2693         if(need_orco) orcobase=orco= get_object_orco(re, ob);
2694
2695         dl= cu->disp.first;
2696         while(dl) {
2697                 if(dl->type==DL_INDEX3) {
2698                         int *index;
2699
2700                         startvert= obr->totvert;
2701                         data= dl->verts;
2702
2703                         n[0]= ob->imat[0][2];
2704                         n[1]= ob->imat[1][2];
2705                         n[2]= ob->imat[2][2];
2706                         Normalize(n);
2707
2708                         for(a=0; a<dl->nr; a++, data+=3) {
2709                                 ver= RE_findOrAddVert(obr, obr->totvert++);
2710                                 VECCOPY(ver->co, data);
2711
2712                                 /* flip normal if face is backfacing, also used in face loop below */
2713                                 if(ver->co[2] < 0.0) {
2714                                         VECCOPY(ver->n, n);
2715                                         ver->flag = 1;
2716                                 }
2717                                 else {
2718                                         ver->n[0]= -n[0]; ver->n[1]= -n[1]; ver->n[2]= -n[2];
2719                                         ver->flag = 0;
2720                                 }
2721
2722                                 MTC_Mat4MulVecfl(mat, ver->co);
2723
2724                                 if (orco) {
2725                                         ver->orco = orco;
2726                                         orco += 3;
2727                                 }
2728                         }
2729
2730                         if(timeoffset==0) {
2731                                 startvlak= obr->totvlak;
2732                                 index= dl->index;
2733                                 for(a=0; a<dl->parts; a++, index+=3) {
2734
2735                                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2736                                         vlr->v1= RE_findOrAddVert(obr, startvert+index[0]);
2737                                         vlr->v2= RE_findOrAddVert(obr, startvert+index[1]);
2738                                         vlr->v3= RE_findOrAddVert(obr, startvert+index[2]);
2739                                         vlr->v4= NULL;
2740
2741                                         if(vlr->v1->flag) {
2742                                                 VECCOPY(vlr->n, n);
2743                                         }
2744                                         else {
2745                                                 vlr->n[0]= -n[0]; vlr->n[1]= -n[1]; vlr->n[2]= -n[2];
2746                                         }
2747
2748                                         vlr->mat= matar[ dl->col ];
2749                                         vlr->flag= 0;
2750                                         if( (cu->flag & CU_NOPUNOFLIP) ) {
2751                                                 vlr->flag |= R_NOPUNOFLIP;
2752                                         }
2753                                         vlr->ec= 0;
2754                                 }
2755                         }
2756                 }
2757                 else if (dl->type==DL_SURF) {
2758
2759                         /* cyclic U means an extruded full circular curve, we skip bevel splitting then */
2760                         if (dl->flag & DL_CYCL_U) {
2761                                 orco+= 3*dl_surf_to_renderdata(obr, dl, matar, orco, mat);
2762                         }
2763                         else {
2764                                 int p1,p2,p3,p4;
2765
2766                                 fp= dl->verts;
2767                                 startvert= obr->totvert;
2768                                 nr= dl->nr*dl->parts;
2769
2770                                 while(nr--) {
2771                                         ver= RE_findOrAddVert(obr, obr->totvert++);
2772
2773                                         VECCOPY(ver->co, fp);
2774                                         MTC_Mat4MulVecfl(mat, ver->co);
2775                                         fp+= 3;
2776
2777                                         if (orco) {
2778                                                 ver->orco = orco;
2779                                                 orco += 3;
2780                                         }
2781                                 }
2782
2783                                 if(dl->bevelSplitFlag || timeoffset==0) {
2784                                         startvlak= obr->totvlak;
2785
2786                                         for(a=0; a<dl->parts; a++) {
2787
2788                                                 frontside= (a >= dl->nr/2);
2789
2790                                                 DL_SURFINDEX(dl->flag & DL_CYCL_U, dl->flag & DL_CYCL_V, dl->nr, dl->parts);
2791                                                 p1+= startvert;
2792                                                 p2+= startvert;
2793                                                 p3+= startvert;
2794                                                 p4+= startvert;
2795
2796                                                 for(; b<dl->nr; b++) {
2797                                                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2798                                                         vlr->v1= RE_findOrAddVert(obr, p2);
2799                                                         vlr->v2= RE_findOrAddVert(obr, p1);
2800                                                         vlr->v3= RE_findOrAddVert(obr, p3);
2801                                                         vlr->v4= RE_findOrAddVert(obr, p4);
2802                                                         vlr->ec= ME_V2V3+ME_V3V4;
2803                                                         if(a==0) vlr->ec+= ME_V1V2;
2804
2805                                                         vlr->flag= dl->rt;
2806
2807                                                         /* this is not really scientific: the vertices
2808                                                                 * 2, 3 en 4 seem to give better vertexnormals than 1 2 3:
2809                                                                 * front and backside treated different!!
2810