Split up the following imbuf functions in 2...
[blender-staging.git] / 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(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(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(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(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 && psys->childcache) {
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         shi.thread= 0;
2276         
2277         /* Displace the verts, flag is set when done */
2278         if (!vlr->v1->flag)
2279                 displace_render_vert(re, obr, &shi, vlr->v1,0,  scale, mat, imat);
2280         
2281         if (!vlr->v2->flag)
2282                 displace_render_vert(re, obr, &shi, vlr->v2, 1, scale, mat, imat);
2283
2284         if (!vlr->v3->flag)
2285                 displace_render_vert(re, obr, &shi, vlr->v3, 2, scale, mat, imat);
2286
2287         if (vlr->v4) {
2288                 if (!vlr->v4->flag)
2289                         displace_render_vert(re, obr, &shi, vlr->v4, 3, scale, mat, imat);
2290
2291                 /*      closest in displace value.  This will help smooth edges.   */ 
2292                 if ( fabs(vlr->v1->accum - vlr->v3->accum) > fabs(vlr->v2->accum - vlr->v4->accum)) 
2293                         vlr->flag |= R_DIVIDE_24;
2294                 else vlr->flag &= ~R_DIVIDE_24;
2295         }
2296         
2297         /* Recalculate the face normal  - if flipped before, flip now */
2298         if(vlr->v4) {
2299                 CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2300         }       
2301         else {
2302                 CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2303         }
2304 }
2305
2306 static void do_displacement(Render *re, ObjectRen *obr, float mat[][4], float imat[][3])
2307 {
2308         VertRen *vr;
2309         VlakRen *vlr;
2310 //      float min[3]={1e30, 1e30, 1e30}, max[3]={-1e30, -1e30, -1e30};
2311         float scale[3]={1.0f, 1.0f, 1.0f}, temp[3];//, xn
2312         int i; //, texflag=0;
2313         Object *obt;
2314                 
2315         /* Object Size with parenting */
2316         obt=obr->ob;
2317         while(obt){
2318                 VecAddf(temp, obt->size, obt->dsize);
2319                 scale[0]*=temp[0]; scale[1]*=temp[1]; scale[2]*=temp[2];
2320                 obt=obt->parent;
2321         }
2322         
2323         /* Clear all flags */
2324         for(i=0; i<obr->totvert; i++){ 
2325                 vr= RE_findOrAddVert(obr, i);
2326                 vr->flag= 0;
2327         }
2328
2329         for(i=0; i<obr->totvlak; i++){
2330                 vlr=RE_findOrAddVlak(obr, i);
2331                 displace_render_face(re, obr, vlr, scale, mat, imat);
2332         }
2333         
2334         /* Recalc vertex normals */
2335         calc_vertexnormals(re, obr, 0, 0);
2336 }
2337
2338 /* ------------------------------------------------------------------------- */
2339 /* Metaball                                                                                                                              */
2340 /* ------------------------------------------------------------------------- */
2341
2342 static void init_render_mball(Render *re, ObjectRen *obr)
2343 {
2344         Object *ob= obr->ob;
2345         DispList *dl;
2346         VertRen *ver;
2347         VlakRen *vlr, *vlr1;
2348         Material *ma;
2349         float *data, *nors, *orco, mat[4][4], imat[3][3], xn, yn, zn;
2350         int a, need_orco, vlakindex, *index;
2351
2352         if (ob!=find_basis_mball(ob))
2353                 return;
2354
2355         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2356         MTC_Mat4Invert(ob->imat, mat);
2357         MTC_Mat3CpyMat4(imat, ob->imat);
2358
2359         ma= give_render_material(re, ob, 1);
2360
2361         need_orco= 0;
2362         if(ma->texco & TEXCO_ORCO) {
2363                 need_orco= 1;
2364         }
2365         
2366         makeDispListMBall(ob);
2367         dl= ob->disp.first;
2368         if(dl==0) return;
2369
2370         data= dl->verts;
2371         nors= dl->nors;
2372         orco= get_object_orco(re, ob);
2373
2374         for(a=0; a<dl->nr; a++, data+=3, nors+=3, orco+=3) {
2375
2376                 ver= RE_findOrAddVert(obr, obr->totvert++);
2377                 VECCOPY(ver->co, data);
2378                 MTC_Mat4MulVecfl(mat, ver->co);
2379
2380                 /* render normals are inverted */
2381                 xn= -nors[0];
2382                 yn= -nors[1];
2383                 zn= -nors[2];
2384
2385                 /* transpose ! */
2386                 ver->n[0]= imat[0][0]*xn+imat[0][1]*yn+imat[0][2]*zn;
2387                 ver->n[1]= imat[1][0]*xn+imat[1][1]*yn+imat[1][2]*zn;
2388                 ver->n[2]= imat[2][0]*xn+imat[2][1]*yn+imat[2][2]*zn;
2389                 Normalize(ver->n);
2390                 //if(ob->transflag & OB_NEG_SCALE) VecMulf(ver->n. -1.0);
2391                 
2392                 if(need_orco) ver->orco= orco;
2393         }
2394
2395         index= dl->index;
2396         for(a=0; a<dl->parts; a++, index+=4) {
2397
2398                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2399                 vlr->v1= RE_findOrAddVert(obr, index[0]);
2400                 vlr->v2= RE_findOrAddVert(obr, index[1]);
2401                 vlr->v3= RE_findOrAddVert(obr, index[2]);
2402                 vlr->v4= 0;
2403
2404                 if(ob->transflag & OB_NEG_SCALE) 
2405                         CalcNormFloat(vlr->v1->co, vlr->v2->co, vlr->v3->co, vlr->n);
2406                 else
2407                         CalcNormFloat(vlr->v3->co, vlr->v2->co, vlr->v1->co, vlr->n);
2408
2409                 vlr->mat= ma;
2410                 vlr->flag= ME_SMOOTH+R_NOPUNOFLIP;
2411                 vlr->ec= 0;
2412
2413                 /* mball -too bad- always has triangles, because quads can be non-planar */
2414                 if(index[3] && index[3]!=index[2]) {
2415                         vlr1= RE_findOrAddVlak(obr, obr->totvlak++);
2416                         vlakindex= vlr1->index;
2417                         *vlr1= *vlr;
2418                         vlr1->index= vlakindex;
2419                         vlr1->v2= vlr1->v3;
2420                         vlr1->v3= RE_findOrAddVert(obr, index[3]);
2421                         if(ob->transflag & OB_NEG_SCALE) 
2422                                 CalcNormFloat(vlr1->v1->co, vlr1->v2->co, vlr1->v3->co, vlr1->n);
2423                         else
2424                                 CalcNormFloat(vlr1->v3->co, vlr1->v2->co, vlr1->v1->co, vlr1->n);
2425                 }
2426         }
2427
2428         /* enforce display lists remade */
2429         freedisplist(&ob->disp);
2430         
2431         /* this enforces remake for real, orco displist is small (in scale) */
2432         ob->recalc |= OB_RECALC_DATA;
2433 }
2434
2435 /* ------------------------------------------------------------------------- */
2436 /* Surfaces and Curves                                                                                                           */
2437 /* ------------------------------------------------------------------------- */
2438
2439 /* returns amount of vertices added for orco */
2440 static int dl_surf_to_renderdata(ObjectRen *obr, DispList *dl, Material **matar, float *orco, float mat[4][4])
2441 {
2442         Object *ob= obr->ob;
2443         VertRen *v1, *v2, *v3, *v4, *ver;
2444         VlakRen *vlr, *vlr1, *vlr2, *vlr3;
2445         Curve *cu= ob->data;
2446         float *data, n1[3];
2447         int u, v, orcoret= 0;
2448         int p1, p2, p3, p4, a;
2449         int sizeu, nsizeu, sizev, nsizev;
2450         int startvert, startvlak;
2451         
2452         startvert= obr->totvert;
2453         nsizeu = sizeu = dl->parts; nsizev = sizev = dl->nr; 
2454         
2455         data= dl->verts;
2456         for (u = 0; u < sizeu; u++) {
2457                 v1 = RE_findOrAddVert(obr, obr->totvert++); /* save this for possible V wrapping */
2458                 VECCOPY(v1->co, data); data += 3;
2459                 if(orco) {
2460                         v1->orco= orco; orco+= 3; orcoret++;
2461                 }       
2462                 MTC_Mat4MulVecfl(mat, v1->co);
2463                 
2464                 for (v = 1; v < sizev; v++) {
2465                         ver= RE_findOrAddVert(obr, obr->totvert++);
2466                         VECCOPY(ver->co, data); data += 3;
2467                         if(orco) {
2468                                 ver->orco= orco; orco+= 3; orcoret++;
2469                         }       
2470                         MTC_Mat4MulVecfl(mat, ver->co);
2471                 }
2472                 /* if V-cyclic, add extra vertices at end of the row */
2473                 if (dl->flag & DL_CYCL_U) {
2474                         ver= RE_findOrAddVert(obr, obr->totvert++);
2475                         VECCOPY(ver->co, v1->co);
2476                         if(orco) {
2477                                 ver->orco= orco; orco+=3; orcoret++; //orcobase + 3*(u*sizev + 0);
2478                         }
2479                 }       
2480         }       
2481         
2482         /* Done before next loop to get corner vert */
2483         if (dl->flag & DL_CYCL_U) nsizev++;
2484         if (dl->flag & DL_CYCL_V) nsizeu++;
2485         
2486         /* if U cyclic, add extra row at end of column */
2487         if (dl->flag & DL_CYCL_V) {
2488                 for (v = 0; v < nsizev; v++) {
2489                         v1= RE_findOrAddVert(obr, startvert + v);
2490                         ver= RE_findOrAddVert(obr, obr->totvert++);
2491                         VECCOPY(ver->co, v1->co);
2492                         if(orco) {
2493                                 ver->orco= orco; orco+=3; orcoret++; //ver->orco= orcobase + 3*(0*sizev + v);
2494                         }
2495                 }
2496         }
2497         
2498         sizeu = nsizeu;
2499         sizev = nsizev;
2500         
2501         startvlak= obr->totvlak;
2502         
2503         for(u = 0; u < sizeu - 1; u++) {
2504                 p1 = startvert + u * sizev; /* walk through face list */
2505                 p2 = p1 + 1;
2506                 p3 = p2 + sizev;
2507                 p4 = p3 - 1;
2508                 
2509                 for(v = 0; v < sizev - 1; v++) {
2510                         v1= RE_findOrAddVert(obr, p1);
2511                         v2= RE_findOrAddVert(obr, p2);
2512                         v3= RE_findOrAddVert(obr, p3);
2513                         v4= RE_findOrAddVert(obr, p4);
2514                         
2515                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2516                         vlr->v1= v1; vlr->v2= v2; vlr->v3= v3; vlr->v4= v4;
2517                         
2518                         CalcNormFloat4(vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co, n1);
2519                         
2520                         VECCOPY(vlr->n, n1);
2521                         
2522                         vlr->mat= matar[ dl->col];
2523                         vlr->ec= ME_V1V2+ME_V2V3;
2524                         vlr->flag= dl->rt;
2525                         if( (cu->flag & CU_NOPUNOFLIP) ) {
2526                                 vlr->flag |= R_NOPUNOFLIP;
2527                         }
2528                         
2529                         VecAddf(v1->n, v1->n, n1);
2530                         VecAddf(v2->n, v2->n, n1);
2531                         VecAddf(v3->n, v3->n, n1);
2532                         VecAddf(v4->n, v4->n, n1);
2533                         
2534                         p1++; p2++; p3++; p4++;
2535                 }
2536         }       
2537         /* fix normals for U resp. V cyclic faces */
2538         sizeu--; sizev--;  /* dec size for face array */
2539         if (dl->flag & DL_CYCL_V) {
2540                 
2541                 for (v = 0; v < sizev; v++)
2542                 {
2543                         /* optimize! :*/
2544                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, v));
2545                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0, v));
2546                         VecAddf(vlr1->v1->n, vlr1->v1->n, vlr->n);
2547                         VecAddf(vlr1->v2->n, vlr1->v2->n, vlr->n);
2548                         VecAddf(vlr->v3->n, vlr->v3->n, vlr1->n);
2549                         VecAddf(vlr->v4->n, vlr->v4->n, vlr1->n);
2550                 }
2551         }
2552         if (dl->flag & DL_CYCL_U) {
2553                 
2554                 for (u = 0; u < sizeu; u++)
2555                 {
2556                         /* optimize! :*/
2557                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(u, 0));
2558                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(u, sizev-1));
2559                         VecAddf(vlr1->v2->n, vlr1->v2->n, vlr->n);
2560                         VecAddf(vlr1->v3->n, vlr1->v3->n, vlr->n);
2561                         VecAddf(vlr->v1->n, vlr->v1->n, vlr1->n);
2562                         VecAddf(vlr->v4->n, vlr->v4->n, vlr1->n);
2563                 }
2564         }
2565         /* last vertex is an extra case: 
2566                 
2567                 ^       ()----()----()----()
2568                 |       |     |     ||     |
2569                 u       |     |(0,n)||(0,0)|
2570                 |     |     ||     |
2571                 ()====()====[]====()
2572                 |     |     ||     |
2573                 |     |(m,n)||(m,0)|
2574                 |     |     ||     |
2575                 ()----()----()----()
2576                 v ->
2577                 
2578                 vertex [] is no longer shared, therefore distribute
2579                 normals of the surrounding faces to all of the duplicates of []
2580                 */
2581         
2582         if ((dl->flag & DL_CYCL_V) && (dl->flag & DL_CYCL_U))
2583         {
2584                 vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, sizev - 1)); /* (m,n) */
2585                 vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0,0));  /* (0,0) */
2586                 VecAddf(n1, vlr->n, vlr1->n);
2587                 vlr2= RE_findOrAddVlak(obr, UVTOINDEX(0, sizev-1)); /* (0,n) */
2588                 VecAddf(n1, n1, vlr2->n);
2589                 vlr3= RE_findOrAddVlak(obr, UVTOINDEX(sizeu-1, 0)); /* (m,0) */
2590                 VecAddf(n1, n1, vlr3->n);
2591                 VECCOPY(vlr->v3->n, n1);
2592                 VECCOPY(vlr1->v1->n, n1);
2593                 VECCOPY(vlr2->v2->n, n1);
2594                 VECCOPY(vlr3->v4->n, n1);
2595         }
2596         for(a = startvert; a < obr->totvert; a++) {
2597                 ver= RE_findOrAddVert(obr, a);
2598                 Normalize(ver->n);
2599         }
2600         
2601         
2602         return orcoret;
2603 }
2604
2605 static void init_render_surf(Render *re, ObjectRen *obr)
2606 {
2607         Object *ob= obr->ob;
2608         Nurb *nu=0;
2609         Curve *cu;
2610         ListBase displist;
2611         DispList *dl;
2612         Material *matar[32];
2613         float *orco=NULL, *orcobase=NULL, mat[4][4];
2614         int a, need_orco=0;
2615
2616         cu= ob->data;
2617         nu= cu->nurb.first;
2618         if(nu==0) return;
2619
2620         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2621         MTC_Mat4Invert(ob->imat, mat);
2622
2623         /* material array */
2624         memset(matar, 0, 4*32);
2625         matar[0]= give_render_material(re, ob, 0);
2626         for(a=0; a<ob->totcol; a++) {
2627                 matar[a]= give_render_material(re, ob, a+1);
2628                 if(matar[a] && matar[a]->texco & TEXCO_ORCO) {
2629                         need_orco= 1;
2630                 }
2631         }
2632
2633         if(ob->parent && (ob->parent->type==OB_LATTICE)) need_orco= 1;
2634
2635         if(need_orco) orcobase= orco= get_object_orco(re, ob);
2636
2637         displist.first= displist.last= 0;
2638         makeDispListSurf(ob, &displist, 1);
2639
2640         dl= displist.first;
2641         /* walk along displaylist and create rendervertices/-faces */
2642         while(dl) {
2643                         /* watch out: u ^= y, v ^= x !! */
2644                 if(dl->type==DL_SURF) {
2645                         orco+= 3*dl_surf_to_renderdata(obr, dl, matar, orco, mat);
2646                 }
2647
2648                 dl= dl->next;
2649         }
2650         freedisplist(&displist);
2651 }
2652
2653 static void init_render_curve(Render *re, ObjectRen *obr, int timeoffset)
2654 {
2655         Object *ob= obr->ob;
2656         Curve *cu;
2657         VertRen *ver;
2658         VlakRen *vlr;
2659         DispList *dl;
2660         ListBase olddl={NULL, NULL};
2661         Material *matar[32];
2662         float len, *data, *fp, *orco=NULL, *orcobase= NULL;
2663         float n[3], mat[4][4];
2664         int nr, startvert, startvlak, a, b;
2665         int frontside, need_orco=0;
2666
2667         cu= ob->data;
2668         if(ob->type==OB_FONT && cu->str==NULL) return;
2669         else if(ob->type==OB_CURVE && cu->nurb.first==NULL) return;
2670
2671         /* no modifier call here, is in makedisp */
2672
2673         if(cu->resolu_ren) 
2674                 SWAP(ListBase, olddl, cu->disp);
2675         
2676         /* test displist */
2677         if(cu->disp.first==NULL) 
2678                 makeDispListCurveTypes(ob, 0);
2679         dl= cu->disp.first;
2680         if(cu->disp.first==NULL) return;
2681         
2682         MTC_Mat4MulMat4(mat, ob->obmat, re->viewmat);
2683         MTC_Mat4Invert(ob->imat, mat);
2684
2685         /* material array */
2686         memset(matar, 0, 4*32);
2687         matar[0]= give_render_material(re, ob, 0);
2688         for(a=0; a<ob->totcol; a++) {
2689                 matar[a]= give_render_material(re, ob, a+1);
2690                 if(matar[a]->texco & TEXCO_ORCO) {
2691                         need_orco= 1;
2692                 }
2693         }
2694
2695         if(need_orco) orcobase=orco= get_object_orco(re, ob);
2696
2697         dl= cu->disp.first;
2698         while(dl) {
2699                 if(dl->type==DL_INDEX3) {
2700                         int *index;
2701
2702                         startvert= obr->totvert;
2703                         data= dl->verts;
2704
2705                         n[0]= ob->imat[0][2];
2706                         n[1]= ob->imat[1][2];
2707                         n[2]= ob->imat[2][2];
2708                         Normalize(n);
2709
2710                         for(a=0; a<dl->nr; a++, data+=3) {
2711                                 ver= RE_findOrAddVert(obr, obr->totvert++);
2712                                 VECCOPY(ver->co, data);
2713
2714                                 /* flip normal if face is backfacing, also used in face loop below */
2715                                 if(ver->co[2] < 0.0) {
2716                                         VECCOPY(ver->n, n);
2717                                         ver->flag = 1;
2718                                 }
2719                                 else {
2720                                         ver->n[0]= -n[0]; ver->n[1]= -n[1]; ver->n[2]= -n[2];
2721                                         ver->flag = 0;
2722                                 }
2723
2724                                 MTC_Mat4MulVecfl(mat, ver->co);
2725                                 
2726                                 if (orco) {
2727                                         ver->orco = orco;
2728                                         orco += 3;
2729                                 }
2730                         }
2731                         
2732                         if(timeoffset==0) {
2733                                 startvlak= obr->totvlak;
2734                                 index= dl->index;
2735                                 for(a=0; a<dl->parts; a++, index+=3) {
2736
2737                                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2738                                         vlr->v1= RE_findOrAddVert(obr, startvert+index[0]);
2739                                         vlr->v2= RE_findOrAddVert(obr, startvert+index[1]);
2740                                         vlr->v3= RE_findOrAddVert(obr, startvert+index[2]);
2741                                         vlr->v4= NULL;
2742                                         
2743                                         if(vlr->v1->flag) {
2744                                                 VECCOPY(vlr->n, n);
2745                                         }
2746                                         else {
2747                                                 vlr->n[0]= -n[0]; vlr->n[1]= -n[1]; vlr->n[2]= -n[2];
2748                                         }
2749                                         
2750                                         vlr->mat= matar[ dl->col ];
2751                                         vlr->flag= 0;
2752                                         if( (cu->flag & CU_NOPUNOFLIP) ) {
2753                                                 vlr->flag |= R_NOPUNOFLIP;
2754                                         }
2755                                         vlr->ec= 0;
2756                                 }
2757                         }
2758                 }
2759                 else if (dl->type==DL_SURF) {
2760                         
2761                         /* cyclic U means an extruded full circular curve, we skip bevel splitting then */
2762                         if (dl->flag & DL_CYCL_U) {
2763                                 orco+= 3*dl_surf_to_renderdata(obr, dl, matar, orco, mat);
2764                         }
2765                         else {
2766                                 int p1,p2,p3,p4;
2767
2768                                 fp= dl->verts;
2769                                 startvert= obr->totvert;
2770                                 nr= dl->nr*dl->parts;
2771
2772                                 while(nr--) {
2773                                         ver= RE_findOrAddVert(obr, obr->totvert++);
2774                                                 
2775                                         VECCOPY(ver->co, fp);
2776                                         MTC_Mat4MulVecfl(mat, ver->co);
2777                                         fp+= 3;
2778
2779                                         if (orco) {
2780                                                 ver->orco = orco;
2781                                                 orco += 3;
2782                                         }
2783                                 }
2784
2785                                 if(dl->bevelSplitFlag || timeoffset==0) {
2786                                         startvlak= obr->totvlak;
2787
2788                                         for(a=0; a<dl->parts; a++) {
2789
2790                                                 frontside= (a >= dl->nr/2);
2791                                                 
2792                                                 if (surfindex_displist(dl, a, &b, &p1, &p2, &p3, &p4)==0)
2793                                                         break;
2794                                                 
2795                                                 p1+= startvert;
2796                                                 p2+= startvert;
2797                                                 p3+= startvert;
2798                                                 p4+= startvert;
2799
2800                                                 for(; b<dl->nr; b++) {
2801                                                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2802                                                         vlr->v1= RE_findOrAddVert(obr, p2);
2803                                                         vlr->v2= RE_findOrAddVert(obr, p1);
2804                                                         vlr->v3= RE_findOrAddVert(obr, p3);
2805                                                         vlr->v4= RE_findOrAddVert(obr, p4);
2806                                                         vlr->ec= ME_V2V3+ME_V3V4;
2807                                                         if(a==0) vlr->ec+= ME_V1V2;
2808
2809                                                         vlr->flag= dl->rt;
2810
2811                          &nbs