style cleanup
[blender.git] / source / blender / render / intern / source / convertblender.c
1 /*
2  * ***** BEGIN GPL LICENSE BLOCK *****
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License
6  * as published by the Free Software Foundation; either version 2
7  * of the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17  *
18  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
19  * All rights reserved.
20  *
21  * Contributors: 2004/2005/2006 Blender Foundation, full recode
22  *
23  * ***** END GPL LICENSE BLOCK *****
24  */
25
26 /** \file blender/render/intern/source/convertblender.c
27  *  \ingroup render
28  */
29
30 #include <math.h>
31 #include <stdlib.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <limits.h>
35
36 #include "MEM_guardedalloc.h"
37
38 #include "BLI_math.h"
39 #include "BLI_blenlib.h"
40 #include "BLI_utildefines.h"
41 #include "BLI_rand.h"
42 #include "BLI_memarena.h"
43 #include "BLI_ghash.h"
44 #include "BLI_linklist.h"
45 #ifdef WITH_FREESTYLE
46 #  include "BLI_edgehash.h"
47 #endif
48
49 #include "BLF_translation.h"
50
51 #include "DNA_armature_types.h"
52 #include "DNA_camera_types.h"
53 #include "DNA_material_types.h"
54 #include "DNA_curve_types.h"
55 #include "DNA_effect_types.h"
56 #include "DNA_group_types.h"
57 #include "DNA_lamp_types.h"
58 #include "DNA_image_types.h"
59 #include "DNA_lattice_types.h"
60 #include "DNA_mesh_types.h"
61 #include "DNA_meshdata_types.h"
62 #include "DNA_meta_types.h"
63 #include "DNA_modifier_types.h"
64 #include "DNA_node_types.h"
65 #include "DNA_object_types.h"
66 #include "DNA_object_force.h"
67 #include "DNA_object_fluidsim.h"
68 #include "DNA_particle_types.h"
69 #include "DNA_scene_types.h"
70 #include "DNA_texture_types.h"
71 #include "DNA_view3d_types.h"
72
73 #include "BKE_anim.h"
74 #include "BKE_armature.h"
75 #include "BKE_action.h"
76 #include "BKE_curve.h"
77 #include "BKE_customdata.h"
78 #include "BKE_colortools.h"
79 #include "BKE_constraint.h"
80 #include "BKE_displist.h"
81 #include "BKE_deform.h"
82 #include "BKE_DerivedMesh.h"
83 #include "BKE_effect.h"
84 #include "BKE_global.h"
85 #include "BKE_group.h"
86 #include "BKE_key.h"
87 #include "BKE_ipo.h"
88 #include "BKE_image.h"
89 #include "BKE_lattice.h"
90 #include "BKE_library.h"
91 #include "BKE_material.h"
92 #include "BKE_main.h"
93 #include "BKE_mball.h"
94 #include "BKE_mesh.h"
95 #include "BKE_modifier.h"
96 #include "BKE_node.h"
97 #include "BKE_object.h"
98 #include "BKE_particle.h"
99 #include "BKE_scene.h"
100 #include "BKE_subsurf.h"
101 #include "BKE_texture.h"
102
103 #include "BKE_world.h"
104
105 #include "PIL_time.h"
106 #include "IMB_imbuf_types.h"
107
108 #include "envmap.h"
109 #include "occlusion.h"
110 #include "pointdensity.h"
111 #include "voxeldata.h"
112 #include "render_types.h"
113 #include "rendercore.h"
114 #include "renderdatabase.h"
115 #include "renderpipeline.h"
116 #include "shadbuf.h"
117 #include "shading.h"
118 #include "strand.h"
119 #include "texture.h"
120 #include "volume_precache.h"
121 #include "sss.h"
122 #include "strand.h"
123 #include "zbuf.h"
124 #include "sunsky.h"
125
126 #include "RE_render_ext.h"
127
128 /* 10 times larger than normal epsilon, test it on default nurbs sphere with ray_transp (for quad detection) */
129 /* or for checking vertex normal flips */
130 #define FLT_EPSILON10 1.19209290e-06F
131
132 /* could enable at some point but for now there are far too many conversions */
133 #ifdef __GNUC__
134 #  pragma GCC diagnostic ignored "-Wdouble-promotion"
135 #endif
136
137 /* ------------------------------------------------------------------------- */
138
139 /* Stuff for stars. This sits here because it uses gl-things. Part of
140  * this code may move down to the converter.  */
141 /* ------------------------------------------------------------------------- */
142 /* this is a bad beast, since it is misused by the 3d view drawing as well. */
143
144 static HaloRen *initstar(Render *re, ObjectRen *obr, const float vec[3], float hasize)
145 {
146         HaloRen *har;
147         float hoco[4];
148         
149         projectverto(vec, re->winmat, hoco);
150         
151         har= RE_findOrAddHalo(obr, obr->tothalo++);
152         
153         /* projectvert is done in function zbufvlaggen again, because of parts */
154         copy_v3_v3(har->co, vec);
155         har->hasize= hasize;
156         
157         har->zd= 0.0;
158         har->pool = re->pool;
159         
160         return har;
161 }
162
163 /* there must be a 'fixed' amount of stars generated between
164  *         near and far
165  * all stars must by preference lie on the far and solely
166  *        differ in clarity/color
167  */
168
169 void RE_make_stars(Render *re, Scene *scenev3d, void (*initfunc)(void),
170                    void (*vertexfunc)(const float *),  void (*termfunc)(void))
171 {
172         extern unsigned char hash[512];
173         ObjectRen *obr= NULL;
174         World *wrld= NULL;
175         HaloRen *har;
176         Scene *scene;
177         Object *camera;
178         Camera *cam;
179         RNG *rng;
180         double dblrand, hlfrand;
181         float vec[4], fx, fy, fz;
182         float fac, starmindist, clipend;
183         float mat[4][4], stargrid, maxrand, maxjit, force, alpha;
184         int x, y, z, sx, sy, sz, ex, ey, ez, done = FALSE;
185         unsigned int totstar= 0;
186         
187         if (initfunc) {
188                 scene= scenev3d;
189                 wrld= scene->world;
190         }
191         else {
192                 scene= re->scene;
193                 wrld= &(re->wrld);
194         }
195
196         stargrid = wrld->stardist;                      /* distance between stars */
197         maxrand = 2.0;                                          /* amount a star can be shifted (in grid units) */
198         maxjit = (wrld->starcolnoise);          /* amount a color is being shifted */
199         
200         /* size of stars */
201         force = ( wrld->starsize );
202         
203         /* minimal free space (starting at camera) */
204         starmindist= wrld->starmindist;
205         
206         if (stargrid <= 0.10f) return;
207         
208         if (re) re->flag |= R_HALO;
209         else stargrid *= 1.0f;                          /* then it draws fewer */
210         
211         if (re) invert_m4_m4(mat, re->viewmat);
212         else unit_m4(mat);
213         
214         /* BOUNDING BOX CALCULATION
215          * bbox goes from z = loc_near_var | loc_far_var,
216          * x = -z | +z,
217          * y = -z | +z
218          */
219
220         camera= re ? RE_GetCamera(re) : scene->camera;
221
222         if (camera==NULL || camera->type != OB_CAMERA)
223                 return;
224
225         cam = camera->data;
226         clipend = cam->clipend;
227         
228         /* convert to grid coordinates */
229         
230         sx = ((mat[3][0] - clipend) / stargrid) - maxrand;
231         sy = ((mat[3][1] - clipend) / stargrid) - maxrand;
232         sz = ((mat[3][2] - clipend) / stargrid) - maxrand;
233         
234         ex = ((mat[3][0] + clipend) / stargrid) + maxrand;
235         ey = ((mat[3][1] + clipend) / stargrid) + maxrand;
236         ez = ((mat[3][2] + clipend) / stargrid) + maxrand;
237         
238         dblrand = maxrand * stargrid;
239         hlfrand = 2.0 * dblrand;
240         
241         if (initfunc) {
242                 initfunc();
243         }
244
245         if (re) /* add render object for stars */
246                 obr= RE_addRenderObject(re, NULL, NULL, 0, 0, 0);
247         
248         rng = BLI_rng_new(0);
249         
250         for (x = sx, fx = sx * stargrid; x <= ex; x++, fx += stargrid) {
251                 for (y = sy, fy = sy * stargrid; y <= ey; y++, fy += stargrid) {
252                         for (z = sz, fz = sz * stargrid; z <= ez; z++, fz += stargrid) {
253
254                                 BLI_rng_seed(rng, (hash[z & 0xff] << 24) + (hash[y & 0xff] << 16) + (hash[x & 0xff] << 8));
255                                 vec[0] = fx + (hlfrand * BLI_rng_get_double(rng)) - dblrand;
256                                 vec[1] = fy + (hlfrand * BLI_rng_get_double(rng)) - dblrand;
257                                 vec[2] = fz + (hlfrand * BLI_rng_get_double(rng)) - dblrand;
258                                 vec[3] = 1.0;
259                                 
260                                 if (vertexfunc) {
261                                         if (done & 1) vertexfunc(vec);
262                                         done++;
263                                 }
264                                 else {
265                                         if (re)
266                                                 mul_m4_v3(re->viewmat, vec);
267                                         
268                                         /* in vec are global coordinates
269                                          * calculate distance to camera
270                                          * and using that, define the alpha
271                                          */
272                                         alpha = len_v3(vec);
273
274                                         if (alpha >= clipend) alpha = 0.0;
275                                         else if (alpha <= starmindist) alpha = 0.0;
276                                         else if (alpha <= 2.0f * starmindist) {
277                                                 alpha = (alpha - starmindist) / starmindist;
278                                         }
279                                         else {
280                                                 alpha -= 2.0f * starmindist;
281                                                 alpha /= (clipend - 2.0f * starmindist);
282                                                 alpha = 1.0f - alpha;
283                                         }
284                                         
285                                         
286                                         if (alpha != 0.0f) {
287                                                 fac = force * BLI_rng_get_double(rng);
288                                                 
289                                                 har = initstar(re, obr, vec, fac);
290                                                 
291                                                 if (har) {
292                                                         har->alfa = sqrt(sqrt(alpha));
293                                                         har->add= 255;
294                                                         har->r = har->g = har->b = 1.0;
295                                                         if (maxjit) {
296                                                                 har->r += ((maxjit * BLI_rng_get_double(rng)) ) - maxjit;
297                                                                 har->g += ((maxjit * BLI_rng_get_double(rng)) ) - maxjit;
298                                                                 har->b += ((maxjit * BLI_rng_get_double(rng)) ) - maxjit;
299                                                         }
300                                                         har->hard = 32;
301                                                         har->lay= -1;
302                                                         har->type |= HA_ONLYSKY;
303                                                         done++;
304                                                 }
305                                         }
306                                 }
307
308                                 /* break out of the loop if generating stars takes too long */
309                                 if (re && !(totstar % 1000000)) {
310                                         if (re->test_break(re->tbh)) {
311                                                 x= ex + 1;
312                                                 y= ey + 1;
313                                                 z= ez + 1;
314                                         }
315                                 }
316                                 
317                                 totstar++;
318                         }
319                         /* do not call blender_test_break() here, since it is used in UI as well, confusing the callback system */
320                         /* main cause is G.is_break of course, a global again... (ton) */
321                 }
322         }
323         if (termfunc) termfunc();
324
325         if (obr)
326                 re->tothalo += obr->tothalo;
327
328         BLI_rng_free(rng);
329 }
330
331
332 /* ------------------------------------------------------------------------- */
333 /* tool functions/defines for ad hoc simplification and possible future 
334  * cleanup      */
335 /* ------------------------------------------------------------------------- */
336
337 #define UVTOINDEX(u, v) (startvlak + (u) * sizev + (v))
338 /*
339  *
340  * NOTE THAT U/V COORDINATES ARE SOMETIMES SWAPPED !!
341  *
342  * ^   ()----p4----p3----()
343  * |   |     |     |     |
344  * u   |     |  F1 |  F2 |
345  *     |     |     |     |
346  *     ()----p1----p2----()
347  *            v ->
348  */
349
350 /* ------------------------------------------------------------------------- */
351
352 static void split_v_renderfaces(ObjectRen *obr, int startvlak, int UNUSED(startvert), int UNUSED(usize), int vsize, int uIndex, int UNUSED(cyclu), int cyclv)
353 {
354         int vLen = vsize-1+(!!cyclv);
355         int v;
356
357         for (v=0; v<vLen; v++) {
358                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v);
359                 VertRen *vert = RE_vertren_copy(obr, vlr->v2);
360
361                 if (cyclv) {
362                         vlr->v2 = vert;
363
364                         if (v==vLen-1) {
365                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + 0);
366                                 vlr->v1 = vert;
367                         }
368                         else {
369                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v+1);
370                                 vlr->v1 = vert;
371                         }
372                 }
373                 else {
374                         vlr->v2 = vert;
375
376                         if (v<vLen-1) {
377                                 VlakRen *vlr = RE_findOrAddVlak(obr, startvlak + vLen*uIndex + v+1);
378                                 vlr->v1 = vert;
379                         }
380
381                         if (v==0) {
382                                 vlr->v1 = RE_vertren_copy(obr, vlr->v1);
383                         }
384                 }
385         }
386 }
387
388 /* ------------------------------------------------------------------------- */
389 /* Stress, tangents and normals                                              */
390 /* ------------------------------------------------------------------------- */
391
392 static void calc_edge_stress_add(float *accum, VertRen *v1, VertRen *v2)
393 {
394         float len= len_v3v3(v1->co, v2->co)/len_v3v3(v1->orco, v2->orco);
395         float *acc;
396         
397         acc= accum + 2*v1->index;
398         acc[0]+= len;
399         acc[1]+= 1.0f;
400         
401         acc= accum + 2*v2->index;
402         acc[0]+= len;
403         acc[1]+= 1.0f;
404 }
405
406 static void calc_edge_stress(Render *UNUSED(re), ObjectRen *obr, Mesh *me)
407 {
408         float loc[3], size[3], *accum, *acc, *accumoffs, *stress;
409         int a;
410         
411         if (obr->totvert==0) return;
412         
413         BKE_mesh_texspace_get(me, loc, NULL, size);
414         
415         accum= MEM_callocN(2*sizeof(float)*obr->totvert, "temp accum for stress");
416         
417         /* de-normalize orco */
418         for (a=0; a<obr->totvert; a++) {
419                 VertRen *ver= RE_findOrAddVert(obr, a);
420                 if (ver->orco) {
421                         ver->orco[0]= ver->orco[0]*size[0] +loc[0];
422                         ver->orco[1]= ver->orco[1]*size[1] +loc[1];
423                         ver->orco[2]= ver->orco[2]*size[2] +loc[2];
424                 }
425         }
426         
427         /* add stress values */
428         accumoffs= accum;       /* so we can use vertex index */
429         for (a=0; a<obr->totvlak; a++) {
430                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
431
432                 if (vlr->v1->orco && vlr->v4) {
433                         calc_edge_stress_add(accumoffs, vlr->v1, vlr->v2);
434                         calc_edge_stress_add(accumoffs, vlr->v2, vlr->v3);
435                         calc_edge_stress_add(accumoffs, vlr->v3, vlr->v1);
436                         if (vlr->v4) {
437                                 calc_edge_stress_add(accumoffs, vlr->v3, vlr->v4);
438                                 calc_edge_stress_add(accumoffs, vlr->v4, vlr->v1);
439                                 calc_edge_stress_add(accumoffs, vlr->v2, vlr->v4);
440                         }
441                 }
442         }
443         
444         for (a=0; a<obr->totvert; a++) {
445                 VertRen *ver= RE_findOrAddVert(obr, a);
446                 if (ver->orco) {
447                         /* find stress value */
448                         acc= accumoffs + 2*ver->index;
449                         if (acc[1]!=0.0f)
450                                 acc[0]/= acc[1];
451                         stress= RE_vertren_get_stress(obr, ver, 1);
452                         *stress= *acc;
453                         
454                         /* restore orcos */
455                         ver->orco[0] = (ver->orco[0]-loc[0])/size[0];
456                         ver->orco[1] = (ver->orco[1]-loc[1])/size[1];
457                         ver->orco[2] = (ver->orco[2]-loc[2])/size[2];
458                 }
459         }
460         
461         MEM_freeN(accum);
462 }
463
464 /* gets tangent from tface or orco */
465 static void calc_tangent_vector(ObjectRen *obr, VlakRen *vlr, int do_tangent)
466 {
467         MTFace *tface= RE_vlakren_get_tface(obr, vlr, obr->actmtface, NULL, 0);
468         VertRen *v1=vlr->v1, *v2=vlr->v2, *v3=vlr->v3, *v4=vlr->v4;
469         float tang[3], *tav;
470         float *uv1, *uv2, *uv3, *uv4;
471         float uv[4][2];
472         
473         if (tface) {
474                 uv1= tface->uv[0];
475                 uv2= tface->uv[1];
476                 uv3= tface->uv[2];
477                 uv4= tface->uv[3];
478         }
479         else if (v1->orco) {
480                 uv1= uv[0]; uv2= uv[1]; uv3= uv[2]; uv4= uv[3];
481                 map_to_sphere(&uv[0][0], &uv[0][1], v1->orco[0], v1->orco[1], v1->orco[2]);
482                 map_to_sphere(&uv[1][0], &uv[1][1], v2->orco[0], v2->orco[1], v2->orco[2]);
483                 map_to_sphere(&uv[2][0], &uv[2][1], v3->orco[0], v3->orco[1], v3->orco[2]);
484                 if (v4)
485                         map_to_sphere(&uv[3][0], &uv[3][1], v4->orco[0], v4->orco[1], v4->orco[2]);
486         }
487         else return;
488
489         tangent_from_uv(uv1, uv2, uv3, v1->co, v2->co, v3->co, vlr->n, tang);
490         
491         if (do_tangent) {
492                 tav= RE_vertren_get_tangent(obr, v1, 1);
493                 add_v3_v3(tav, tang);
494                 tav= RE_vertren_get_tangent(obr, v2, 1);
495                 add_v3_v3(tav, tang);
496                 tav= RE_vertren_get_tangent(obr, v3, 1);
497                 add_v3_v3(tav, tang);
498         }
499         
500         if (v4) {
501                 tangent_from_uv(uv1, uv3, uv4, v1->co, v3->co, v4->co, vlr->n, tang);
502                 
503                 if (do_tangent) {
504                         tav= RE_vertren_get_tangent(obr, v1, 1);
505                         add_v3_v3(tav, tang);
506                         tav= RE_vertren_get_tangent(obr, v3, 1);
507                         add_v3_v3(tav, tang);
508                         tav= RE_vertren_get_tangent(obr, v4, 1);
509                         add_v3_v3(tav, tang);
510                 }
511         }
512 }
513
514
515
516 /****************************************************************
517  ************ tangent space generation interface ****************
518  ****************************************************************/
519
520 typedef struct {
521         ObjectRen *obr;
522
523 } SRenderMeshToTangent;
524
525 /* interface */
526 #include "mikktspace.h"
527
528 static int GetNumFaces(const SMikkTSpaceContext *pContext)
529 {
530         SRenderMeshToTangent *pMesh = (SRenderMeshToTangent *) pContext->m_pUserData;
531         return pMesh->obr->totvlak;
532 }
533
534 static int GetNumVertsOfFace(const SMikkTSpaceContext *pContext, const int face_num)
535 {
536         SRenderMeshToTangent *pMesh = (SRenderMeshToTangent *) pContext->m_pUserData;
537         VlakRen *vlr= RE_findOrAddVlak(pMesh->obr, face_num);
538         return vlr->v4!=NULL ? 4 : 3;
539 }
540
541 static void GetPosition(const SMikkTSpaceContext *pContext, float r_co[3], const int face_num, const int vert_index)
542 {
543         //assert(vert_index>=0 && vert_index<4);
544         SRenderMeshToTangent *pMesh = (SRenderMeshToTangent *) pContext->m_pUserData;
545         VlakRen *vlr= RE_findOrAddVlak(pMesh->obr, face_num);
546         const float *co = (&vlr->v1)[vert_index]->co;
547         copy_v3_v3(r_co, co);
548 }
549
550 static void GetTextureCoordinate(const SMikkTSpaceContext *pContext, float r_uv[2], const int face_num, const int vert_index)
551 {
552         //assert(vert_index>=0 && vert_index<4);
553         SRenderMeshToTangent *pMesh = (SRenderMeshToTangent *) pContext->m_pUserData;
554         VlakRen *vlr= RE_findOrAddVlak(pMesh->obr, face_num);
555         MTFace *tface= RE_vlakren_get_tface(pMesh->obr, vlr, pMesh->obr->actmtface, NULL, 0);
556         const float *coord;
557         
558         if (tface  != NULL) {
559                 coord= tface->uv[vert_index];
560                 copy_v2_v2(r_uv, coord);
561         }
562         else if ((coord = (&vlr->v1)[vert_index]->orco)) {
563                 map_to_sphere(&r_uv[0], &r_uv[1], coord[0], coord[1], coord[2]);
564         }
565         else { /* else we get un-initialized value, 0.0 ok default? */
566                 zero_v2(r_uv);
567         }
568 }
569
570 static void GetNormal(const SMikkTSpaceContext *pContext, float r_no[3], const int face_num, const int vert_index)
571 {
572         //assert(vert_index>=0 && vert_index<4);
573         SRenderMeshToTangent *pMesh = (SRenderMeshToTangent *) pContext->m_pUserData;
574         VlakRen *vlr= RE_findOrAddVlak(pMesh->obr, face_num);
575
576         if (vlr->flag & ME_SMOOTH) {
577                 const float *n = (&vlr->v1)[vert_index]->n;
578                 copy_v3_v3(r_no, n);
579         }
580         else {
581                 negate_v3_v3(r_no, vlr->n);
582         }
583 }
584 static void SetTSpace(const SMikkTSpaceContext *pContext, const float fvTangent[3], const float fSign, const int face_num, const int iVert)
585 {
586         //assert(vert_index>=0 && vert_index<4);
587         SRenderMeshToTangent *pMesh = (SRenderMeshToTangent *) pContext->m_pUserData;
588         VlakRen *vlr = RE_findOrAddVlak(pMesh->obr, face_num);
589         float *ftang = RE_vlakren_get_nmap_tangent(pMesh->obr, vlr, 1);
590         if (ftang!=NULL) {
591                 copy_v3_v3(&ftang[iVert*4+0], fvTangent);
592                 ftang[iVert*4+3]=fSign;
593         }
594 }
595
596 static void calc_vertexnormals(Render *UNUSED(re), ObjectRen *obr, int do_tangent, int do_nmap_tangent)
597 {
598         int a;
599
600                 /* clear all vertex normals */
601         for (a=0; a<obr->totvert; a++) {
602                 VertRen *ver= RE_findOrAddVert(obr, a);
603                 ver->n[0]=ver->n[1]=ver->n[2]= 0.0f;
604         }
605
606                 /* calculate cos of angles and point-masses, use as weight factor to
607                  * add face normal to vertex */
608         for (a=0; a<obr->totvlak; a++) {
609                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
610                 if (vlr->flag & ME_SMOOTH) {
611                         float *n4= (vlr->v4)? vlr->v4->n: NULL;
612                         float *c4= (vlr->v4)? vlr->v4->co: NULL;
613
614                         accumulate_vertex_normals(vlr->v1->n, vlr->v2->n, vlr->v3->n, n4,
615                                 vlr->n, vlr->v1->co, vlr->v2->co, vlr->v3->co, c4);
616                 }
617                 if (do_tangent) {
618                         /* tangents still need to be calculated for flat faces too */
619                         /* weighting removed, they are not vertexnormals */
620                         calc_tangent_vector(obr, vlr, do_tangent);
621                 }
622         }
623
624                 /* do solid faces */
625         for (a=0; a<obr->totvlak; a++) {
626                 VlakRen *vlr= RE_findOrAddVlak(obr, a);
627
628                 if ((vlr->flag & ME_SMOOTH)==0) {
629                         if (is_zero_v3(vlr->v1->n)) copy_v3_v3(vlr->v1->n, vlr->n);
630                         if (is_zero_v3(vlr->v2->n)) copy_v3_v3(vlr->v2->n, vlr->n);
631                         if (is_zero_v3(vlr->v3->n)) copy_v3_v3(vlr->v3->n, vlr->n);
632                         if (vlr->v4 && is_zero_v3(vlr->v4->n)) copy_v3_v3(vlr->v4->n, vlr->n);
633                 }
634         }
635         
636         /* normalize vertex normals */
637         for (a=0; a<obr->totvert; a++) {
638                 VertRen *ver= RE_findOrAddVert(obr, a);
639                 normalize_v3(ver->n);
640                 if (do_tangent) {
641                         float *tav= RE_vertren_get_tangent(obr, ver, 0);
642                         if (tav) {
643                                 /* orthonorm. */
644                                 const float tdn = dot_v3v3(tav, ver->n);
645                                 tav[0] -= ver->n[0]*tdn;
646                                 tav[1] -= ver->n[1]*tdn;
647                                 tav[2] -= ver->n[2]*tdn;
648                                 normalize_v3(tav);
649                         }
650                 }
651         }
652
653         /* normal mapping tangent with mikktspace */
654         if (do_nmap_tangent != FALSE) {
655                 SRenderMeshToTangent mesh2tangent;
656                 SMikkTSpaceContext sContext;
657                 SMikkTSpaceInterface sInterface;
658                 memset(&mesh2tangent, 0, sizeof(SRenderMeshToTangent));
659                 memset(&sContext, 0, sizeof(SMikkTSpaceContext));
660                 memset(&sInterface, 0, sizeof(SMikkTSpaceInterface));
661
662                 mesh2tangent.obr = obr;
663
664                 sContext.m_pUserData = &mesh2tangent;
665                 sContext.m_pInterface = &sInterface;
666                 sInterface.m_getNumFaces = GetNumFaces;
667                 sInterface.m_getNumVerticesOfFace = GetNumVertsOfFace;
668                 sInterface.m_getPosition = GetPosition;
669                 sInterface.m_getTexCoord = GetTextureCoordinate;
670                 sInterface.m_getNormal = GetNormal;
671                 sInterface.m_setTSpaceBasic = SetTSpace;
672
673                 genTangSpaceDefault(&sContext);
674         }
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 *UNUSED(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 == NULL) 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 = fabsf(dot_v3v3(vlr->n, asf->vlr[a]->n));
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 *UNUSED(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 = fabsf(dot_v3v3(vlr->n, asf->vlr[a]->n));
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 *UNUSED(re), ObjectRen *obr, float mat[4][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= cosf(DEG2RADF((0.5f + (float)degr)));
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->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                 mul_m4_v3(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                                 normal_quad_v3(vlr->n, vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co);
853                         else 
854                                 normal_tri_v3(vlr->n, vlr->v3->co, vlr->v2->co, vlr->v1->co);
855                 }
856         }
857 }
858
859 /* ------------------------------------------------------------------------- */
860 /* Orco hash and Materials                                                   */
861 /* ------------------------------------------------------------------------- */
862
863 static float *get_object_orco(Render *re, void *ob)
864 {
865         if (!re->orco_hash) {
866                 return NULL;
867         }
868
869         return BLI_ghash_lookup(re->orco_hash, ob);
870 }
871
872 static void set_object_orco(Render *re, void *ob, float *orco)
873 {
874         if (!re->orco_hash)
875                 re->orco_hash = BLI_ghash_ptr_new("set_object_orco gh");
876         
877         BLI_ghash_insert(re->orco_hash, ob, orco);
878 }
879
880 static void free_mesh_orco_hash(Render *re) 
881 {
882         if (re->orco_hash) {
883                 BLI_ghash_free(re->orco_hash, NULL, MEM_freeN);
884                 re->orco_hash = NULL;
885         }
886 }
887
888 static void check_material_mapto(Material *ma)
889 {
890         int a;
891         ma->mapto_textured = 0;
892         
893         /* cache which inputs are actually textured.
894          * this can avoid a bit of time spent iterating through all the texture slots, map inputs and map tos
895          * every time a property which may or may not be textured is accessed */
896         
897         for (a=0; a<MAX_MTEX; a++) {
898                 if (ma->mtex[a] && ma->mtex[a]->tex) {
899                         /* currently used only in volume render, so we'll check for those flags */
900                         if (ma->mtex[a]->mapto & MAP_DENSITY) ma->mapto_textured |= MAP_DENSITY;
901                         if (ma->mtex[a]->mapto & MAP_EMISSION) ma->mapto_textured |= MAP_EMISSION;
902                         if (ma->mtex[a]->mapto & MAP_EMISSION_COL) ma->mapto_textured |= MAP_EMISSION_COL;
903                         if (ma->mtex[a]->mapto & MAP_SCATTERING) ma->mapto_textured |= MAP_SCATTERING;
904                         if (ma->mtex[a]->mapto & MAP_TRANSMISSION_COL) ma->mapto_textured |= MAP_TRANSMISSION_COL;
905                         if (ma->mtex[a]->mapto & MAP_REFLECTION) ma->mapto_textured |= MAP_REFLECTION;
906                         if (ma->mtex[a]->mapto & MAP_REFLECTION_COL) ma->mapto_textured |= MAP_REFLECTION_COL;
907                 }
908         }
909 }
910 static void flag_render_node_material(Render *re, bNodeTree *ntree)
911 {
912         bNode *node;
913
914         for (node = ntree->nodes.first; node; node = node->next) {
915                 if (node->id) {
916                         if (GS(node->id->name)==ID_MA) {
917                                 Material *ma= (Material *)node->id;
918
919                                 if ((ma->mode & MA_TRANSP) && (ma->mode & MA_ZTRANSP))
920                                         re->flag |= R_ZTRA;
921
922                                 ma->flag |= MA_IS_USED;
923                         }
924                         else if (node->type==NODE_GROUP)
925                                 flag_render_node_material(re, (bNodeTree *)node->id);
926                 }
927         }
928 }
929
930 static Material *give_render_material(Render *re, Object *ob, short nr)
931 {
932         extern Material defmaterial;    /* material.c */
933         Material *ma;
934         
935         ma= give_current_material(ob, nr);
936         if (ma==NULL)
937                 ma= &defmaterial;
938         
939         if (re->r.mode & R_SPEED) ma->texco |= NEED_UV;
940         
941         if (ma->material_type == MA_TYPE_VOLUME) {
942                 ma->mode |= MA_TRANSP;
943                 ma->mode &= ~MA_SHADBUF;
944         }
945         if ((ma->mode & MA_TRANSP) && (ma->mode & MA_ZTRANSP))
946                 re->flag |= R_ZTRA;
947         
948         /* for light groups and SSS */
949         ma->flag |= MA_IS_USED;
950
951         if (ma->nodetree && ma->use_nodes)
952                 flag_render_node_material(re, ma->nodetree);
953         
954         check_material_mapto(ma);
955         
956         return ma;
957 }
958
959 /* ------------------------------------------------------------------------- */
960 /* Particles                                                                 */
961 /* ------------------------------------------------------------------------- */
962 typedef struct ParticleStrandData {
963         struct MCol *mcol;
964         float *orco, *uvco, *surfnor;
965         float time, adapt_angle, adapt_pix, size;
966         int totuv, totcol;
967         int first, line, adapt, override_uv;
968 }
969 ParticleStrandData;
970 /* future thread problem... */
971 static void static_particle_strand(Render *re, ObjectRen *obr, Material *ma, ParticleStrandData *sd, const float vec[3], const float vec1[3])
972 {
973         static VertRen *v1= NULL, *v2= NULL;
974         VlakRen *vlr= NULL;
975         float nor[3], cross[3], crosslen, w, dx, dy, width;
976         static float anor[3], avec[3];
977         int flag, i;
978         static int second=0;
979         
980         sub_v3_v3v3(nor, vec, vec1);
981         normalize_v3(nor);  /* nor needed as tangent */
982         cross_v3_v3v3(cross, vec, nor);
983
984         /* turn cross in pixelsize */
985         w= vec[2]*re->winmat[2][3] + re->winmat[3][3];
986         dx= re->winx*cross[0]*re->winmat[0][0];
987         dy= re->winy*cross[1]*re->winmat[1][1];
988         w= sqrt(dx*dx + dy*dy)/w;
989         
990         if (w!=0.0f) {
991                 float fac;
992                 if (ma->strand_ease!=0.0f) {
993                         if (ma->strand_ease<0.0f)
994                                 fac= pow(sd->time, 1.0f+ma->strand_ease);
995                         else
996                                 fac= pow(sd->time, 1.0f/(1.0f-ma->strand_ease));
997                 }
998                 else fac= sd->time;
999
1000                 width= ((1.0f-fac)*ma->strand_sta + (fac)*ma->strand_end);
1001
1002                 /* use actual Blender units for strand width and fall back to minimum width */
1003                 if (ma->mode & MA_STR_B_UNITS) {
1004                         crosslen= len_v3(cross);
1005                         w= 2.0f*crosslen*ma->strand_min/w;
1006
1007                         if (width < w)
1008                                 width= w;
1009
1010                         /*cross is the radius of the strand so we want it to be half of full width */
1011                         mul_v3_fl(cross, 0.5f/crosslen);
1012                 }
1013                 else
1014                         width/=w;
1015
1016                 mul_v3_fl(cross, width);
1017         }
1018         
1019         if (ma->mode & MA_TANGENT_STR)
1020                 flag= R_SMOOTH|R_TANGENT;
1021         else
1022                 flag= R_SMOOTH;
1023         
1024         /* only 1 pixel wide strands filled in as quads now, otherwise zbuf errors */
1025         if (ma->strand_sta==1.0f)
1026                 flag |= R_STRAND;
1027         
1028         /* single face line */
1029         if (sd->line) {
1030                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1031                 vlr->flag= flag;
1032                 vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1033                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1034                 vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1035                 vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1036                 
1037                 copy_v3_v3(vlr->v1->co, vec);
1038                 add_v3_v3(vlr->v1->co, cross);
1039                 copy_v3_v3(vlr->v1->n, nor);
1040                 vlr->v1->orco= sd->orco;
1041                 vlr->v1->accum = -1.0f;  /* accum abuse for strand texco */
1042                 
1043                 copy_v3_v3(vlr->v2->co, vec);
1044                 sub_v3_v3v3(vlr->v2->co, vlr->v2->co, cross);
1045                 copy_v3_v3(vlr->v2->n, nor);
1046                 vlr->v2->orco= sd->orco;
1047                 vlr->v2->accum= vlr->v1->accum;
1048
1049                 copy_v3_v3(vlr->v4->co, vec1);
1050                 add_v3_v3(vlr->v4->co, cross);
1051                 copy_v3_v3(vlr->v4->n, nor);
1052                 vlr->v4->orco= sd->orco;
1053                 vlr->v4->accum = 1.0f;  /* accum abuse for strand texco */
1054
1055                 copy_v3_v3(vlr->v3->co, vec1);
1056                 sub_v3_v3v3(vlr->v3->co, vlr->v3->co, cross);
1057                 copy_v3_v3(vlr->v3->n, nor);
1058                 vlr->v3->orco= sd->orco;
1059                 vlr->v3->accum= vlr->v4->accum;
1060
1061                 normal_quad_v3(vlr->n, vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co);
1062                 
1063                 vlr->mat= ma;
1064                 vlr->ec= ME_V2V3;
1065
1066                 if (sd->surfnor) {
1067                         float *snor= RE_vlakren_get_surfnor(obr, vlr, 1);
1068                         copy_v3_v3(snor, sd->surfnor);
1069                 }
1070
1071                 if (sd->uvco) {
1072                         for (i=0; i<sd->totuv; i++) {
1073                                 MTFace *mtf;
1074                                 mtf=RE_vlakren_get_tface(obr, vlr, i, NULL, 1);
1075                                 mtf->uv[0][0]=mtf->uv[1][0]=
1076                                 mtf->uv[2][0]=mtf->uv[3][0]=(sd->uvco+2*i)[0];
1077                                 mtf->uv[0][1]=mtf->uv[1][1]=
1078                                 mtf->uv[2][1]=mtf->uv[3][1]=(sd->uvco+2*i)[1];
1079                         }
1080                         if (sd->override_uv>=0) {
1081                                 MTFace *mtf;
1082                                 mtf=RE_vlakren_get_tface(obr, vlr, sd->override_uv, NULL, 0);
1083                                 
1084                                 mtf->uv[0][0]=mtf->uv[3][0]=0.0f;
1085                                 mtf->uv[1][0]=mtf->uv[2][0]=1.0f;
1086
1087                                 mtf->uv[0][1]=mtf->uv[1][1]=0.0f;
1088                                 mtf->uv[2][1]=mtf->uv[3][1]=1.0f;
1089                         }
1090                 }
1091                 if (sd->mcol) {
1092                         for (i=0; i<sd->totcol; i++) {
1093                                 MCol *mc;
1094                                 mc=RE_vlakren_get_mcol(obr, vlr, i, NULL, 1);
1095                                 mc[0]=mc[1]=mc[2]=mc[3]=sd->mcol[i];
1096                                 mc[0]=mc[1]=mc[2]=mc[3]=sd->mcol[i];
1097                         }
1098                 }
1099         }
1100         /* first two vertices of a strand */
1101         else if (sd->first) {
1102                 if (sd->adapt) {
1103                         copy_v3_v3(anor, nor);
1104                         copy_v3_v3(avec, vec);
1105                         second=1;
1106                 }
1107
1108                 v1= RE_findOrAddVert(obr, obr->totvert++);
1109                 v2= RE_findOrAddVert(obr, obr->totvert++);
1110                 
1111                 copy_v3_v3(v1->co, vec);
1112                 add_v3_v3(v1->co, cross);
1113                 copy_v3_v3(v1->n, nor);
1114                 v1->orco= sd->orco;
1115                 v1->accum = -1.0f;  /* accum abuse for strand texco */
1116                 
1117                 copy_v3_v3(v2->co, vec);
1118                 sub_v3_v3v3(v2->co, v2->co, cross);
1119                 copy_v3_v3(v2->n, nor);
1120                 v2->orco= sd->orco;
1121                 v2->accum= v1->accum;
1122         }
1123         /* more vertices & faces to strand */
1124         else {
1125                 if (sd->adapt==0 || second) {
1126                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1127                         vlr->flag= flag;
1128                         vlr->v1= v1;
1129                         vlr->v2= v2;
1130                         vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1131                         vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1132
1133                         v1= vlr->v4; /* cycle */
1134                         v2= vlr->v3; /* cycle */
1135
1136
1137                         if (sd->adapt) {
1138                                 second=0;
1139                                 copy_v3_v3(anor, nor);
1140                                 copy_v3_v3(avec, vec);
1141                         }
1142
1143                 }
1144                 else if (sd->adapt) {
1145                         float dvec[3], pvec[3];
1146                         sub_v3_v3v3(dvec, avec, vec);
1147                         project_v3_v3v3(pvec, dvec, vec);
1148                         sub_v3_v3v3(dvec, dvec, pvec);
1149
1150                         w= vec[2]*re->winmat[2][3] + re->winmat[3][3];
1151                         dx= re->winx*dvec[0]*re->winmat[0][0]/w;
1152                         dy= re->winy*dvec[1]*re->winmat[1][1]/w;
1153                         w= sqrt(dx*dx + dy*dy);
1154                         if (dot_v3v3(anor, nor)<sd->adapt_angle && w>sd->adapt_pix) {
1155                                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1156                                 vlr->flag= flag;
1157                                 vlr->v1= v1;
1158                                 vlr->v2= v2;
1159                                 vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1160                                 vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1161
1162                                 v1= vlr->v4; /* cycle */
1163                                 v2= vlr->v3; /* cycle */
1164
1165                                 copy_v3_v3(anor, nor);
1166                                 copy_v3_v3(avec, vec);
1167                         }
1168                         else {
1169                                 vlr= RE_findOrAddVlak(obr, obr->totvlak-1);
1170                         }
1171                 }
1172         
1173                 copy_v3_v3(vlr->v4->co, vec);
1174                 add_v3_v3(vlr->v4->co, cross);
1175                 copy_v3_v3(vlr->v4->n, nor);
1176                 vlr->v4->orco= sd->orco;
1177                 vlr->v4->accum= -1.0f + 2.0f * sd->time;  /* accum abuse for strand texco */
1178
1179                 copy_v3_v3(vlr->v3->co, vec);
1180                 sub_v3_v3v3(vlr->v3->co, vlr->v3->co, cross);
1181                 copy_v3_v3(vlr->v3->n, nor);
1182                 vlr->v3->orco= sd->orco;
1183                 vlr->v3->accum= vlr->v4->accum;
1184                 
1185                 normal_quad_v3(vlr->n, vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co);
1186                 
1187                 vlr->mat= ma;
1188                 vlr->ec= ME_V2V3;
1189
1190                 if (sd->surfnor) {
1191                         float *snor= RE_vlakren_get_surfnor(obr, vlr, 1);
1192                         copy_v3_v3(snor, sd->surfnor);
1193                 }
1194
1195                 if (sd->uvco) {
1196                         for (i=0; i<sd->totuv; i++) {
1197                                 MTFace *mtf;
1198                                 mtf=RE_vlakren_get_tface(obr, vlr, i, NULL, 1);
1199                                 mtf->uv[0][0]=mtf->uv[1][0]=
1200                                 mtf->uv[2][0]=mtf->uv[3][0]=(sd->uvco+2*i)[0];
1201                                 mtf->uv[0][1]=mtf->uv[1][1]=
1202                                 mtf->uv[2][1]=mtf->uv[3][1]=(sd->uvco+2*i)[1];
1203                         }
1204                         if (sd->override_uv>=0) {
1205                                 MTFace *mtf;
1206                                 mtf=RE_vlakren_get_tface(obr, vlr, sd->override_uv, NULL, 0);
1207                                 
1208                                 mtf->uv[0][0]=mtf->uv[3][0]=0.0f;
1209                                 mtf->uv[1][0]=mtf->uv[2][0]=1.0f;
1210
1211                                 mtf->uv[0][1]=mtf->uv[1][1]=(vlr->v1->accum+1.0f)/2.0f;
1212                                 mtf->uv[2][1]=mtf->uv[3][1]=(vlr->v3->accum+1.0f)/2.0f;
1213                         }
1214                 }
1215                 if (sd->mcol) {
1216                         for (i=0; i<sd->totcol; i++) {
1217                                 MCol *mc;
1218                                 mc=RE_vlakren_get_mcol(obr, vlr, i, NULL, 1);
1219                                 mc[0]=mc[1]=mc[2]=mc[3]=sd->mcol[i];
1220                                 mc[0]=mc[1]=mc[2]=mc[3]=sd->mcol[i];
1221                         }
1222                 }
1223         }
1224 }
1225
1226 static void static_particle_wire(ObjectRen *obr, Material *ma, const float vec[3], const float vec1[3], int first, int line)
1227 {
1228         VlakRen *vlr;
1229         static VertRen *v1;
1230
1231         if (line) {
1232                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1233                 vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1234                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1235                 vlr->v3= vlr->v2;
1236                 vlr->v4= NULL;
1237                 
1238                 copy_v3_v3(vlr->v1->co, vec);
1239                 copy_v3_v3(vlr->v2->co, vec1);
1240                 
1241                 sub_v3_v3v3(vlr->n, vec, vec1);
1242                 normalize_v3(vlr->n);
1243                 copy_v3_v3(vlr->v1->n, vlr->n);
1244                 copy_v3_v3(vlr->v2->n, vlr->n);
1245                 
1246                 vlr->mat= ma;
1247                 vlr->ec= ME_V1V2;
1248
1249         }
1250         else if (first) {
1251                 v1= RE_findOrAddVert(obr, obr->totvert++);
1252                 copy_v3_v3(v1->co, vec);
1253         }
1254         else {
1255                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1256                 vlr->v1= v1;
1257                 vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1258                 vlr->v3= vlr->v2;
1259                 vlr->v4= NULL;
1260                 
1261                 v1= vlr->v2; /* cycle */
1262                 copy_v3_v3(v1->co, vec);
1263                 
1264                 sub_v3_v3v3(vlr->n, vec, vec1);
1265                 normalize_v3(vlr->n);
1266                 copy_v3_v3(v1->n, vlr->n);
1267                 
1268                 vlr->mat= ma;
1269                 vlr->ec= ME_V1V2;
1270         }
1271
1272 }
1273
1274 static void particle_curve(Render *re, ObjectRen *obr, DerivedMesh *dm, Material *ma, ParticleStrandData *sd,
1275                            const float loc[3], const float loc1[3], int seed, float *pa_co)
1276 {
1277         HaloRen *har = NULL;
1278
1279         if (ma->material_type == MA_TYPE_WIRE)
1280                 static_particle_wire(obr, ma, loc, loc1, sd->first, sd->line);
1281         else if (ma->material_type == MA_TYPE_HALO) {
1282                 har= RE_inithalo_particle(re, obr, dm, ma, loc, loc1, sd->orco, sd->uvco, sd->size, 1.0, seed, pa_co);
1283                 if (har) har->lay= obr->ob->lay;
1284         }
1285         else
1286                 static_particle_strand(re, obr, ma, sd, loc, loc1);
1287 }
1288 static void particle_billboard(Render *re, ObjectRen *obr, Material *ma, ParticleBillboardData *bb)
1289 {
1290         VlakRen *vlr;
1291         MTFace *mtf;
1292         float xvec[3], yvec[3], zvec[3], bb_center[3];
1293         /* Number of tiles */
1294         int totsplit = bb->uv_split * bb->uv_split;
1295         int tile, x, y;
1296         /* Tile offsets */
1297         float uvx = 0.0f, uvy = 0.0f, uvdx = 1.0f, uvdy = 1.0f, time = 0.0f;
1298
1299         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
1300         vlr->v1= RE_findOrAddVert(obr, obr->totvert++);
1301         vlr->v2= RE_findOrAddVert(obr, obr->totvert++);
1302         vlr->v3= RE_findOrAddVert(obr, obr->totvert++);
1303         vlr->v4= RE_findOrAddVert(obr, obr->totvert++);
1304
1305         psys_make_billboard(bb, xvec, yvec, zvec, bb_center);
1306
1307         add_v3_v3v3(vlr->v1->co, bb_center, xvec);
1308         add_v3_v3(vlr->v1->co, yvec);
1309         mul_m4_v3(re->viewmat, vlr->v1->co);
1310
1311         sub_v3_v3v3(vlr->v2->co, bb_center, xvec);
1312         add_v3_v3(vlr->v2->co, yvec);
1313         mul_m4_v3(re->viewmat, vlr->v2->co);
1314
1315         sub_v3_v3v3(vlr->v3->co, bb_center, xvec);
1316         sub_v3_v3v3(vlr->v3->co, vlr->v3->co, yvec);
1317         mul_m4_v3(re->viewmat, vlr->v3->co);
1318
1319         add_v3_v3v3(vlr->v4->co, bb_center, xvec);
1320         sub_v3_v3(vlr->v4->co, yvec);
1321         mul_m4_v3(re->viewmat, vlr->v4->co);
1322
1323         normal_quad_v3(vlr->n, vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co);
1324         copy_v3_v3(vlr->v1->n, vlr->n);
1325         copy_v3_v3(vlr->v2->n, vlr->n);
1326         copy_v3_v3(vlr->v3->n, vlr->n);
1327         copy_v3_v3(vlr->v4->n, vlr->n);
1328         
1329         vlr->mat= ma;
1330         vlr->ec= ME_V2V3;
1331
1332         if (bb->uv_split > 1) {
1333                 uvdx = uvdy = 1.0f / (float)bb->uv_split;
1334
1335                 if (ELEM(bb->anim, PART_BB_ANIM_AGE, PART_BB_ANIM_FRAME)) {
1336                         if (bb->anim == PART_BB_ANIM_FRAME)
1337                                 time = ((int)(bb->time * bb->lifetime) % totsplit)/(float)totsplit;
1338                         else
1339                                 time = bb->time;
1340                 }
1341                 else if (bb->anim == PART_BB_ANIM_ANGLE) {
1342                         if (bb->align == PART_BB_VIEW) {
1343                                 time = (float)fmod((bb->tilt + 1.0f) / 2.0f, 1.0);
1344                         }
1345                         else {
1346                                 float axis1[3] = {0.0f, 0.0f, 0.0f};
1347                                 float axis2[3] = {0.0f, 0.0f, 0.0f};
1348
1349                                 axis1[(bb->align + 1) % 3] = 1.0f;
1350                                 axis2[(bb->align + 2) % 3] = 1.0f;
1351
1352                                 if (bb->lock == 0) {
1353                                         zvec[bb->align] = 0.0f;
1354                                         normalize_v3(zvec);
1355                                 }
1356                                 
1357                                 time = saacos(dot_v3v3(zvec, axis1)) / (float)M_PI;
1358                                 
1359                                 if (dot_v3v3(zvec, axis2) < 0.0f)
1360                                         time = 1.0f - time / 2.0f;
1361                                 else
1362                                         time /= 2.0f;
1363                         }
1364                 }
1365
1366                 if (bb->split_offset == PART_BB_OFF_LINEAR)
1367                         time = (float)fmod(time + (float)bb->num / (float)totsplit, 1.0f);
1368                 else if (bb->split_offset==PART_BB_OFF_RANDOM)
1369                         time = (float)fmod(time + bb->random, 1.0f);
1370
1371                 /* Find the coordinates in tile space (integer), then convert to UV
1372                  * space (float). Note that Y is flipped. */
1373                 tile = (int)((time + FLT_EPSILON10) * totsplit);
1374                 x = tile % bb->uv_split;
1375                 y = tile / bb->uv_split;
1376                 y = (bb->uv_split - 1) - y;
1377                 uvx = uvdx * x;
1378                 uvy = uvdy * y;
1379         }
1380
1381         /* normal UVs */
1382         if (bb->uv[0] >= 0) {
1383                 mtf = RE_vlakren_get_tface(obr, vlr, bb->uv[0], NULL, 1);
1384                 mtf->uv[0][0] = 1.0f;
1385                 mtf->uv[0][1] = 1.0f;
1386                 mtf->uv[1][0] = 0.0f;
1387                 mtf->uv[1][1] = 1.0f;
1388                 mtf->uv[2][0] = 0.0f;
1389                 mtf->uv[2][1] = 0.0f;
1390                 mtf->uv[3][0] = 1.0f;
1391                 mtf->uv[3][1] = 0.0f;
1392         }
1393
1394         /* time-index UVs */
1395         if (bb->uv[1] >= 0) {
1396                 mtf = RE_vlakren_get_tface(obr, vlr, bb->uv[1], NULL, 1);
1397                 mtf->uv[0][0] = mtf->uv[1][0] = mtf->uv[2][0] = mtf->uv[3][0] = bb->time;
1398                 mtf->uv[0][1] = mtf->uv[1][1] = mtf->uv[2][1] = mtf->uv[3][1] = (float)bb->num/(float)bb->totnum;
1399         }
1400
1401         /* split UVs */
1402         if (bb->uv_split > 1 && bb->uv[2] >= 0) {
1403                 mtf = RE_vlakren_get_tface(obr, vlr, bb->uv[2], NULL, 1);
1404                 mtf->uv[0][0] = uvx + uvdx;
1405                 mtf->uv[0][1] = uvy + uvdy;
1406                 mtf->uv[1][0] = uvx;
1407                 mtf->uv[1][1] = uvy + uvdy;
1408                 mtf->uv[2][0] = uvx;
1409                 mtf->uv[2][1] = uvy;
1410                 mtf->uv[3][0] = uvx + uvdx;
1411                 mtf->uv[3][1] = uvy;
1412         }
1413 }
1414 static void particle_normal_ren(short ren_as, ParticleSettings *part, Render *re, ObjectRen *obr, DerivedMesh *dm, Material *ma, ParticleStrandData *sd, ParticleBillboardData *bb, ParticleKey *state, int seed, float hasize, float *pa_co)
1415 {
1416         float loc[3], loc0[3], loc1[3], vel[3];
1417         
1418         copy_v3_v3(loc, state->co);
1419
1420         if (ren_as != PART_DRAW_BB)
1421                 mul_m4_v3(re->viewmat, loc);
1422
1423         switch (ren_as) {
1424                 case PART_DRAW_LINE:
1425                         sd->line = 1;
1426                         sd->time = 0.0f;
1427                         sd->size = hasize;
1428
1429                         copy_v3_v3(vel, state->vel);
1430                         mul_mat3_m4_v3(re->viewmat, vel);
1431                         normalize_v3(vel);
1432
1433                         if (part->draw & PART_DRAW_VEL_LENGTH)
1434                                 mul_v3_fl(vel, len_v3(state->vel));
1435
1436                         madd_v3_v3v3fl(loc0, loc, vel, -part->draw_line[0]);
1437                         madd_v3_v3v3fl(loc1, loc, vel, part->draw_line[1]);
1438
1439                         particle_curve(re, obr, dm, ma, sd, loc0, loc1, seed, pa_co);
1440
1441                         break;
1442
1443                 case PART_DRAW_BB:
1444
1445                         copy_v3_v3(bb->vec, loc);
1446                         copy_v3_v3(bb->vel, state->vel);
1447
1448                         particle_billboard(re, obr, ma, bb);
1449
1450                         break;
1451
1452                 default:
1453                 {
1454                         HaloRen *har = NULL;
1455
1456                         har = RE_inithalo_particle(re, obr, dm, ma, loc, NULL, sd->orco, sd->uvco, hasize, 0.0, seed, pa_co);
1457                         
1458                         if (har) har->lay= obr->ob->lay;
1459
1460                         break;
1461                 }
1462         }
1463 }
1464 static void get_particle_uvco_mcol(short from, DerivedMesh *dm, float *fuv, int num, ParticleStrandData *sd)
1465 {
1466         int i;
1467
1468         /* get uvco */
1469         if (sd->uvco && ELEM(from, PART_FROM_FACE, PART_FROM_VOLUME)) {
1470                 for (i=0; i<sd->totuv; i++) {
1471                         if (num != DMCACHE_NOTFOUND) {
1472                                 MFace *mface = dm->getTessFaceData(dm, num, CD_MFACE);
1473                                 MTFace *mtface = (MTFace*)CustomData_get_layer_n(&dm->faceData, CD_MTFACE, i);
1474                                 mtface += num;
1475                                 
1476                                 psys_interpolate_uvs(mtface, mface->v4, fuv, sd->uvco + 2 * i);
1477                         }
1478                         else {
1479                                 sd->uvco[2*i] = 0.0f;
1480                                 sd->uvco[2*i + 1] = 0.0f;
1481                         }
1482                 }
1483         }
1484
1485         /* get mcol */
1486         if (sd->mcol && ELEM(from, PART_FROM_FACE, PART_FROM_VOLUME)) {
1487                 for (i=0; i<sd->totcol; i++) {
1488                         if (num != DMCACHE_NOTFOUND) {
1489                                 MFace *mface = dm->getTessFaceData(dm, num, CD_MFACE);
1490                                 MCol *mc = (MCol*)CustomData_get_layer_n(&dm->faceData, CD_MCOL, i);
1491                                 mc += num * 4;
1492
1493                                 psys_interpolate_mcol(mc, mface->v4, fuv, sd->mcol + i);
1494                         }
1495                         else
1496                                 memset(&sd->mcol[i], 0, sizeof(MCol));
1497                 }
1498         }
1499 }
1500 static int render_new_particle_system(Render *re, ObjectRen *obr, ParticleSystem *psys, int timeoffset)
1501 {
1502         Object *ob= obr->ob;
1503 //      Object *tob=0;
1504         Material *ma = NULL;
1505         ParticleSystemModifierData *psmd;
1506         ParticleSystem *tpsys = NULL;
1507         ParticleSettings *part, *tpart = NULL;
1508         ParticleData *pars, *pa = NULL, *tpa = NULL;
1509         ParticleKey *states = NULL;
1510         ParticleKey state;
1511         ParticleCacheKey *cache = NULL;
1512         ParticleBillboardData bb;
1513         ParticleSimulationData sim = {NULL};
1514         ParticleStrandData sd;
1515         StrandBuffer *strandbuf = NULL;
1516         StrandVert *svert = NULL;
1517         StrandBound *sbound = NULL;
1518         StrandRen *strand = NULL;
1519         RNG *rng = NULL;
1520         float loc[3], loc1[3], loc0[3], mat[4][4], nmat[3][3], co[3], nor[3], duplimat[4][4];
1521         float strandlen=0.0f, curlen=0.0f;
1522         float hasize, pa_size, r_tilt, r_length;
1523         float pa_time, pa_birthtime, pa_dietime;
1524         float random, simplify[2], pa_co[3];
1525         const float cfra= BKE_scene_frame_get(re->scene);
1526         int i, a, k, max_k=0, totpart, do_simplify = FALSE, do_surfacecache = FALSE, use_duplimat = FALSE;
1527         int totchild=0, step_nbr;
1528         int seed, path_nbr=0, orco1=0, num;
1529         int totface;
1530         char **uv_name = NULL;
1531
1532         const int *index_mf_to_mpoly = NULL;
1533         const int *index_mp_to_orig = NULL;
1534
1535 /* 1. check that everything is ok & updated */
1536         if (psys==NULL)
1537                 return 0;
1538
1539         part=psys->part;
1540         pars=psys->particles;
1541
1542         if (part==NULL || pars==NULL || !psys_check_enabled(ob, psys))
1543                 return 0;
1544         
1545         if (part->ren_as==PART_DRAW_OB || part->ren_as==PART_DRAW_GR || part->ren_as==PART_DRAW_NOT)
1546                 return 1;
1547
1548 /* 2. start initializing things */
1549
1550         /* last possibility to bail out! */
1551         psmd = psys_get_modifier(ob, psys);
1552         if (!(psmd->modifier.mode & eModifierMode_Render))
1553                 return 0;
1554
1555         sim.scene= re->scene;
1556         sim.ob= ob;
1557         sim.psys= psys;
1558         sim.psmd= psmd;
1559
1560         if (part->phystype==PART_PHYS_KEYED)
1561                 psys_count_keyed_targets(&sim);
1562
1563         totchild=psys->totchild;
1564
1565         /* can happen for disconnected/global hair */
1566         if (part->type==PART_HAIR && !psys->childcache)
1567                 totchild= 0;
1568
1569         if (re->r.scemode & R_VIEWPORT_PREVIEW) { /* preview render */
1570                 totchild = (int)((float)totchild * (float)part->disp / 100.0f);
1571                 step_nbr = part->draw_step;
1572         }
1573         else {
1574                 step_nbr = part->ren_step;
1575         }
1576
1577         psys->flag |= PSYS_DRAWING;
1578
1579         rng= BLI_rng_new(psys->seed);
1580
1581         totpart=psys->totpart;
1582
1583         memset(&sd, 0, sizeof(ParticleStrandData));
1584         sd.override_uv = -1;
1585
1586 /* 2.1 setup material stff */
1587         ma= give_render_material(re, ob, part->omat);
1588         
1589 #if 0  /* XXX old animation system */
1590         if (ma->ipo) {
1591                 calc_ipo(ma->ipo, cfra);
1592                 execute_ipo((ID *)ma, ma->ipo);
1593         }
1594 #endif  /* XXX old animation system */
1595
1596         hasize = ma->hasize;
1597         seed = ma->seed1;
1598
1599         re->flag |= R_HALO;
1600
1601         RE_set_customdata_names(obr, &psmd->dm->faceData);
1602         sd.totuv = CustomData_number_of_layers(&psmd->dm->faceData, CD_MTFACE);
1603         sd.totcol = CustomData_number_of_layers(&psmd->dm->faceData, CD_MCOL);
1604
1605         if (ma->texco & TEXCO_UV && sd.totuv) {
1606                 sd.uvco = MEM_callocN(sd.totuv * 2 * sizeof(float), "particle_uvs");
1607
1608                 if (ma->strand_uvname[0]) {
1609                         sd.override_uv = CustomData_get_named_layer_index(&psmd->dm->faceData, CD_MTFACE, ma->strand_uvname);
1610                         sd.override_uv -= CustomData_get_layer_index(&psmd->dm->faceData, CD_MTFACE);
1611                 }
1612         }
1613         else
1614                 sd.uvco = NULL;
1615
1616         if (sd.totcol)
1617                 sd.mcol = MEM_callocN(sd.totcol * sizeof(MCol), "particle_mcols");
1618
1619 /* 2.2 setup billboards */
1620         if (part->ren_as == PART_DRAW_BB) {
1621                 int first_uv = CustomData_get_layer_index(&psmd->dm->faceData, CD_MTFACE);
1622
1623                 bb.uv[0] = CustomData_get_named_layer_index(&psmd->dm->faceData, CD_MTFACE, psys->bb_uvname[0]);
1624                 if (bb.uv[0] < 0)
1625                         bb.uv[0] = CustomData_get_active_layer_index(&psmd->dm->faceData, CD_MTFACE);
1626
1627                 bb.uv[1] = CustomData_get_named_layer_index(&psmd->dm->faceData, CD_MTFACE, psys->bb_uvname[1]);
1628
1629                 bb.uv[2] = CustomData_get_named_layer_index(&psmd->dm->faceData, CD_MTFACE, psys->bb_uvname[2]);
1630
1631                 if (first_uv >= 0) {
1632                         bb.uv[0] -= first_uv;
1633                         bb.uv[1] -= first_uv;
1634                         bb.uv[2] -= first_uv;
1635                 }
1636
1637                 bb.align = part->bb_align;
1638                 bb.anim = part->bb_anim;
1639                 bb.lock = part->draw & PART_DRAW_BB_LOCK;
1640                 bb.ob = (part->bb_ob ? part->bb_ob : RE_GetCamera(re));
1641                 bb.split_offset = part->bb_split_offset;
1642                 bb.totnum = totpart+totchild;
1643                 bb.uv_split = part->bb_uv_split;
1644         }
1645         
1646 /* 2.5 setup matrices */
1647         mul_m4_m4m4(mat, re->viewmat, ob->obmat);
1648         invert_m4_m4(ob->imat, mat);    /* need to be that way, for imat texture */
1649         copy_m3_m4(nmat, ob->imat);
1650         transpose_m3(nmat);
1651
1652         if (psys->flag & PSYS_USE_IMAT) {
1653                 /* psys->imat is the original emitter's inverse matrix, ob->obmat is the duplicated object's matrix */
1654                 mul_m4_m4m4(duplimat, ob->obmat, psys->imat);
1655                 use_duplimat = TRUE;
1656         }
1657
1658 /* 2.6 setup strand rendering */
1659         if (part->ren_as == PART_DRAW_PATH && psys->pathcache) {
1660                 path_nbr=(int)pow(2.0, (double) step_nbr);
1661
1662                 if (path_nbr) {
1663                         if (!ELEM(ma->material_type, MA_TYPE_HALO, MA_TYPE_WIRE)) {
1664                                 sd.orco = get_object_orco(re, psys);
1665                                 if (!sd.orco) {
1666                                         sd.orco = MEM_mallocN(3*sizeof(float)*(totpart+totchild), "particle orcos");
1667                                         set_object_orco(re, psys, sd.orco);
1668                                 }
1669                         }
1670                 }
1671
1672                 if (part->draw & PART_DRAW_REN_ADAPT) {
1673                         sd.adapt = 1;
1674                         sd.adapt_pix = (float)part->adapt_pix;
1675                         sd.adapt_angle = cosf(DEG2RADF((float)part->adapt_angle));
1676                 }
1677
1678                 if (part->draw & PART_DRAW_REN_STRAND) {
1679                         strandbuf= RE_addStrandBuffer(obr, (totpart+totchild)*(path_nbr+1));
1680                         strandbuf->ma= ma;
1681                         strandbuf->lay= ob->lay;
1682                         copy_m4_m4(strandbuf->winmat, re->winmat);
1683                         strandbuf->winx= re->winx;
1684                         strandbuf->winy= re->winy;
1685                         strandbuf->maxdepth= 2;
1686                         strandbuf->adaptcos= cosf(DEG2RADF((float)part->adapt_angle));
1687                         strandbuf->overrideuv= sd.override_uv;
1688                         strandbuf->minwidth= ma->strand_min;
1689
1690                         if (ma->strand_widthfade == 0.0f)
1691                                 strandbuf->widthfade= -1.0f;
1692                         else if (ma->strand_widthfade >= 1.0f)
1693                                 strandbuf->widthfade= 2.0f - ma->strand_widthfade;
1694                         else
1695                                 strandbuf->widthfade= 1.0f/MAX2(ma->strand_widthfade, 1e-5f);
1696
1697                         if (part->flag & PART_HAIR_BSPLINE)
1698                                 strandbuf->flag |= R_STRAND_BSPLINE;
1699                         if (ma->mode & MA_STR_B_UNITS)
1700                                 strandbuf->flag |= R_STRAND_B_UNITS;
1701
1702                         svert= strandbuf->vert;
1703
1704                         if (re->r.mode & R_SPEED)
1705                                 do_surfacecache = TRUE;
1706                         else if ((re->wrld.mode & (WO_AMB_OCC|WO_ENV_LIGHT|WO_INDIRECT_LIGHT)) && (re->wrld.ao_gather_method == WO_AOGATHER_APPROX))
1707                                 if (ma->amb != 0.0f)
1708                                         do_surfacecache = TRUE;
1709
1710                         totface= psmd->dm->getNumTessFaces(psmd->dm);
1711                         index_mf_to_mpoly = psmd->dm->getTessFaceDataArray(psmd->dm, CD_ORIGINDEX);
1712                         index_mp_to_orig = psmd->dm->getPolyDataArray(psmd->dm, CD_ORIGINDEX);
1713                         if (index_mf_to_mpoly == NULL) {
1714                                 index_mp_to_orig = NULL;
1715                         }
1716                         for (a=0; a<totface; a++)
1717                                 strandbuf->totbound = max_ii(strandbuf->totbound, (index_mf_to_mpoly) ? DM_origindex_mface_mpoly(index_mf_to_mpoly, index_mp_to_orig, a): a);
1718
1719                         strandbuf->totbound++;
1720                         strandbuf->bound= MEM_callocN(sizeof(StrandBound)*strandbuf->totbound, "StrandBound");
1721                         sbound= strandbuf->bound;
1722                         sbound->start= sbound->end= 0;
1723                 }
1724         }
1725
1726         if (sd.orco == NULL) {
1727                 sd.orco = MEM_mallocN(3 * sizeof(float), "particle orco");
1728                 orco1 = 1;
1729         }
1730
1731         if (path_nbr == 0)
1732                 psys->lattice_deform_data = psys_create_lattice_deform_data(&sim);
1733
1734 /* 3. start creating renderable things */
1735         for (a=0, pa=pars; a<totpart+totchild; a++, pa++, seed++) {
1736                 random = BLI_rng_get_float(rng);
1737                 /* setup per particle individual stuff */
1738                 if (a<totpart) {
1739                         if (pa->flag & PARS_UNEXIST) continue;
1740
1741                         pa_time=(cfra-pa->time)/pa->lifetime;
1742                         pa_birthtime = pa->time;
1743                         pa_dietime = pa->dietime;
1744
1745                         hasize = ma->hasize;
1746
1747                         /* XXX 'tpsys' is alwyas NULL, this code won't run! */
1748                         /* get orco */
1749                         if (tpsys && part->phystype == PART_PHYS_NO) {
1750                                 tpa = tpsys->particles + pa->num;
1751                                 psys_particle_on_emitter(
1752                                         psmd,
1753                                         tpart->from, tpa->num, pa->num_dmcache, tpa->fuv,
1754                                         tpa->foffset, co, nor, NULL, NULL, sd.orco, NULL);
1755                         }
1756                         else {
1757                                 psys_particle_on_emitter(
1758                                         psmd,
1759                                         part->from, pa->num, pa->num_dmcache,
1760                                         pa->fuv, pa->foffset, co, nor, NULL, NULL, sd.orco, NULL);
1761                         }
1762
1763                         /* get uvco & mcol */
1764                         num= pa->num_dmcache;
1765
1766                         if (num == DMCACHE_NOTFOUND)
1767                                 if (pa->num < psmd->dm->getNumTessFaces(psmd->dm))
1768                                         num= pa->num;
1769
1770                         get_particle_uvco_mcol(part->from, psmd->dm, pa->fuv, num, &sd);
1771
1772                         pa_size = pa->size;
1773
1774                         r_tilt = 2.0f*(PSYS_FRAND(a) - 0.5f);
1775                         r_length = PSYS_FRAND(a+1);
1776
1777                         if (path_nbr) {
1778                                 cache = psys->pathcache[a];
1779                                 max_k = (int)cache->steps;
1780                         }
1781
1782                         if (totchild && (part->draw&PART_DRAW_PARENT)==0) continue;
1783                 }
1784                 else {
1785                         ChildParticle *cpa= psys->child+a-totpart;
1786
1787                         if (path_nbr) {
1788                                 cache = psys->childcache[a-totpart];
1789
1790                                 if (cache->steps < 0)
1791                                         continue;
1792
1793                                 max_k = (int)cache->steps;
1794                         }
1795                         
1796                         pa_time = psys_get_child_time(psys, cpa, cfra, &pa_birthtime, &pa_dietime);
1797                         pa_size = psys_get_child_size(psys, cpa, cfra, &pa_time);
1798
1799                         r_tilt = 2.0f*(PSYS_FRAND(a + 21) - 0.5f);
1800                         r_length = PSYS_FRAND(a + 22);
1801
1802                         num = cpa->num;
1803
1804                         /* get orco */
1805                         if (part->childtype == PART_CHILD_FACES) {
1806                                 psys_particle_on_emitter(
1807                                         psmd,
1808                                         PART_FROM_FACE, cpa->num, DMCACHE_ISCHILD,
1809                                         cpa->fuv, cpa->foffset, co, nor, NULL, NULL, sd.orco, NULL);
1810                         }
1811                         else {
1812                                 ParticleData *par = psys->particles + cpa->parent;
1813                                 psys_particle_on_emitter(
1814                                         psmd,
1815                                         part->from, par->num, DMCACHE_ISCHILD, par->fuv,
1816                                         par->foffset, co, nor, NULL, NULL, sd.orco, NULL);
1817                         }
1818
1819                         /* get uvco & mcol */
1820                         if (part->childtype==PART_CHILD_FACES) {
1821                                 get_particle_uvco_mcol(PART_FROM_FACE, psmd->dm, cpa->fuv, cpa->num, &sd);
1822                         }
1823                         else {
1824                                 ParticleData *parent = psys->particles + cpa->parent;
1825                                 num = parent->num_dmcache;
1826
1827                                 if (num == DMCACHE_NOTFOUND)
1828                                         if (parent->num < psmd->dm->getNumTessFaces(psmd->dm))
1829                                                 num = parent->num;
1830
1831                                 get_particle_uvco_mcol(part->from, psmd->dm, parent->fuv, num, &sd);
1832                         }
1833
1834                         do_simplify = psys_render_simplify_params(psys, cpa, simplify);
1835
1836                         if (strandbuf) {
1837                                 int orignum = (index_mf_to_mpoly) ? DM_origindex_mface_mpoly(index_mf_to_mpoly, index_mp_to_orig, cpa->num) : cpa->num;
1838
1839                                 if (orignum > sbound - strandbuf->bound) {
1840                                         sbound= strandbuf->bound + orignum;
1841                                         sbound->start= sbound->end= obr->totstrand;
1842                                 }
1843                         }
1844                 }
1845
1846                 /* TEXCO_PARTICLE */
1847                 pa_co[0] = pa_time;
1848                 pa_co[1] = 0.f;
1849                 pa_co[2] = 0.f;
1850
1851                 /* surface normal shading setup */
1852                 if (ma->mode_l & MA_STR_SURFDIFF) {
1853                         mul_m3_v3(nmat, nor);
1854                         sd.surfnor= nor;
1855                 }
1856                 else
1857                         sd.surfnor= NULL;
1858
1859                 /* strand render setup */
1860                 if (strandbuf) {
1861                         strand= RE_findOrAddStrand(obr, obr->totstrand++);
1862                         strand->buffer= strandbuf;
1863                         strand->vert= svert;
1864                         copy_v3_v3(strand->orco, sd.orco);
1865
1866                         if (do_simplify) {
1867                                 float *ssimplify= RE_strandren_get_simplify(obr, strand, 1);
1868                                 ssimplify[0]= simplify[0];
1869                                 ssimplify[1]= simplify[1];
1870                         }
1871
1872                         if (sd.surfnor) {
1873                                 float *snor= RE_strandren_get_surfnor(obr, strand, 1);
1874                                 copy_v3_v3(snor, sd.surfnor);
1875                         }
1876
1877                         if (do_surfacecache && num >= 0) {
1878                                 int *facenum= RE_strandren_get_face(obr, strand, 1);
1879                                 *facenum= num;
1880                         }
1881
1882                         if (sd.uvco) {
1883                                 for (i=0; i<sd.totuv; i++) {
1884                                         if (i != sd.override_uv) {
1885                                                 float *uv= RE_strandren_get_uv(obr, strand, i, NULL, 1);
1886
1887                                                 uv[0]= sd.uvco[2*i];
1888                                                 uv[1]= sd.uvco[2*i+1];
1889                                         }
1890                                 }
1891                         }
1892                         if (sd.mcol) {
1893                                 for (i=0; i<sd.totcol; i++) {
1894                                         MCol *mc= RE_strandren_get_mcol(obr, strand, i, NULL, 1);
1895                                         *mc = sd.mcol[i];
1896                                 }
1897                         }
1898
1899                         sbound->end++;
1900                 }
1901
1902                 /* strandco computation setup */
1903                 if (path_nbr) {
1904                         strandlen= 0.0f;
1905                         curlen= 0.0f;
1906                         for (k=1; k<=path_nbr; k++)
1907                                 if (k<=max_k)
1908                                         strandlen += len_v3v3((cache+k-1)->co, (cache+k)->co);
1909                 }
1910
1911                 if (path_nbr) {
1912                         /* render strands */
1913                         for (k=0; k<=path_nbr; k++) {
1914                                 float time;
1915
1916                                 if (k<=max_k) {
1917                                         copy_v3_v3(state.co, (cache+k)->co);
1918                                         copy_v3_v3(state.vel, (cache+k)->vel);
1919                                 }
1920                                 else
1921                                         continue;
1922
1923                                 if (k > 0)
1924                                         curlen += len_v3v3((cache+k-1)->co, (cache+k)->co);
1925                                 time= curlen/strandlen;
1926
1927                                 copy_v3_v3(loc, state.co);
1928                                 mul_m4_v3(re->viewmat, loc);
1929
1930                                 if (strandbuf) {
1931                                         copy_v3_v3(svert->co, loc);
1932                                         svert->strandco= -1.0f + 2.0f*time;
1933                                         svert++;
1934                                         strand->totvert++;
1935                                 }
1936                                 else {
1937                                         sd.size = hasize;
1938
1939                                         if (k==1) {
1940                                                 sd.first = 1;
1941                                                 sd.time = 0.0f;
1942                                                 sub_v3_v3v3(loc0, loc1, loc);
1943                                                 add_v3_v3v3(loc0, loc1, loc0);
1944
1945                                                 particle_curve(re, obr, psmd->dm, ma, &sd, loc1, loc0, seed, pa_co);
1946                                         }
1947
1948                                         sd.first = 0;
1949                                         sd.time = time;
1950
1951                                         if (k)
1952                                                 particle_curve(re, obr, psmd->dm, ma, &sd, loc, loc1, seed, pa_co);
1953
1954                                         copy_v3_v3(loc1, loc);
1955                                 }
1956                         }
1957
1958                 }
1959                 else {
1960                         /* render normal particles */
1961                         if (part->trail_count > 1) {
1962                                 float length = part->path_end * (1.0f - part->randlength * r_length);
1963                                 int trail_count = part->trail_count * (1.0f - part->randlength * r_length);
1964                                 float ct = (part->draw & PART_ABS_PATH_TIME) ? cfra : pa_time;
1965                                 float dt = length / (trail_count ? (float)trail_count : 1.0f);
1966
1967                                 /* make sure we have pointcache in memory before getting particle on path */
1968                                 psys_make_temp_pointcache(ob, psys);
1969
1970                                 for (i=0; i < trail_count; i++, ct -= dt) {
1971                                         if (part->draw & PART_ABS_PATH_TIME) {
1972                                                 if (ct < pa_birthtime || ct > pa_dietime)
1973                                                         continue;
1974                                         }
1975                                         else if (ct < 0.0f || ct > 1.0f)
1976                                                 continue;
1977
1978                                         state.time = (part->draw & PART_ABS_PATH_TIME) ? -ct : ct;
1979                                         psys_get_particle_on_path(&sim, a, &state, 1);
1980
1981                                         if (psys->parent)
1982                                                 mul_m4_v3(psys->parent->obmat, state.co);
1983
1984                                         if (use_duplimat)
1985                                                 mul_m4_v4(duplimat, state.co);
1986
1987                                         if (part->ren_as == PART_DRAW_BB) {
1988                                                 bb.random = random;
1989                                                 bb.offset[0] = part->bb_offset[0];
1990                                                 bb.offset[1] = part->bb_offset[1];
1991                                                 bb.size[0] = part->bb_size[0] * pa_size;
1992                                                 if (part->bb_align==PART_BB_VEL) {
1993                                                         float pa_vel = len_v3(state.vel);
1994                                                         float head = part->bb_vel_head*pa_vel;
1995                                                         float tail = part->bb_vel_tail*pa_vel;
1996                                                         bb.size[1] = part->bb_size[1]*pa_size + head + tail;
1997                                                         /* use offset to adjust the particle center. this is relative to size, so need to divide! */
1998                                                         if (bb.size[1] > 0.0f)
1999                                                                 bb.offset[1] += (head-tail) / bb.size[1];
2000                                                 }
2001                                                 else
2002                                                         bb.size[1] = part->bb_size[1] * pa_size;
2003                                                 bb.tilt = part->bb_tilt * (1.0f - part->bb_rand_tilt * r_tilt);
2004                                                 bb.time = ct;
2005                                                 bb.num = a;
2006                                         }
2007
2008                                         pa_co[0] = (part->draw & PART_ABS_PATH_TIME) ? (ct-pa_birthtime)/(pa_dietime-pa_birthtime) : ct;
2009                                         pa_co[1] = (float)i/(float)(trail_count-1);
2010
2011                                         particle_normal_ren(part->ren_as, part, re, obr, psmd->dm, ma, &sd, &bb, &state, seed, hasize, pa_co);
2012                                 }
2013                         }
2014                         else {
2015                                 state.time=cfra;
2016                                 if (psys_get_particle_state(&sim, a, &state, 0)==0)
2017                                         continue;
2018
2019                                 if (psys->parent)
2020                                         mul_m4_v3(psys->parent->obmat, state.co);
2021
2022                                 if (use_duplimat)
2023                                         mul_m4_v3(duplimat, state.co);
2024
2025                                 if (part->ren_as == PART_DRAW_BB) {
2026                                         bb.random = random;
2027                                         bb.offset[0] = part->bb_offset[0];
2028                                         bb.offset[1] = part->bb_offset[1];
2029                                         bb.size[0] = part->bb_size[0] * pa_size;
2030                                         if (part->bb_align==PART_BB_VEL) {
2031                                                 float pa_vel = len_v3(state.vel);
2032                                                 float head = part->bb_vel_head*pa_vel;
2033                                                 float tail = part->bb_vel_tail*pa_vel;
2034                                                 bb.size[1] = part->bb_size[1]*pa_size + head + tail;
2035                                                 /* use offset to adjust the particle center. this is relative to size, so need to divide! */
2036                                                 if (bb.size[1] > 0.0f)
2037                                                         bb.offset[1] += (head-tail) / bb.size[1];
2038                                         }
2039                                         else
2040                                                 bb.size[1] = part->bb_size[1] * pa_size;
2041                                         bb.tilt = part->bb_tilt * (1.0f - part->bb_rand_tilt * r_tilt);
2042                                         bb.time = pa_time;
2043                                         bb.num = a;
2044                                         bb.lifetime = pa_dietime-pa_birthtime;
2045                                 }
2046
2047                                 particle_normal_ren(part->ren_as, part, re, obr, psmd->dm, ma, &sd, &bb, &state, seed, hasize, pa_co);
2048                         }
2049                 }
2050
2051                 if (orco1==0)
2052                         sd.orco+=3;
2053
2054                 if (re->test_break(re->tbh))
2055                         break;
2056         }
2057
2058         if (do_surfacecache)
2059                 strandbuf->surface= cache_strand_surface(re, obr, psmd->dm, mat, timeoffset);
2060
2061 /* 4. clean up */
2062 #if 0  /* XXX old animation system */
2063         if (ma) do_mat_ipo(re->scene, ma);
2064 #endif  /* XXX old animation system */
2065
2066         if (orco1)
2067                 MEM_freeN(sd.orco);
2068
2069         if (sd.uvco)
2070                 MEM_freeN(sd.uvco);
2071         
2072         if (sd.mcol)
2073                 MEM_freeN(sd.mcol);
2074
2075         if (uv_name)
2076                 MEM_freeN(uv_name);
2077
2078         if (states)
2079                 MEM_freeN(states);
2080         
2081         BLI_rng_free(rng);
2082
2083         psys->flag &= ~PSYS_DRAWING;
2084
2085         if (psys->lattice_deform_data) {
2086                 end_latt_deform(psys->lattice_deform_data);
2087                 psys->lattice_deform_data = NULL;
2088         }
2089
2090         if (path_nbr && (ma->mode_l & MA_TANGENT_STR)==0)
2091                 calc_vertexnormals(re, obr, 0, 0);
2092
2093         return 1;
2094 }
2095
2096 /* ------------------------------------------------------------------------- */
2097 /* Halo's                                                                                                                                */
2098 /* ------------------------------------------------------------------------- */
2099
2100 static void make_render_halos(Render *re, ObjectRen *obr, Mesh *UNUSED(me), int totvert, MVert *mvert, Material *ma, float *orco)
2101 {
2102         Object *ob= obr->ob;
2103         HaloRen *har;
2104         float xn, yn, zn, nor[3], view[3];
2105         float vec[3], hasize, mat[4][4], imat[3][3];
2106         int a, ok, seed= ma->seed1;
2107
2108         mul_m4_m4m4(mat, re->viewmat, ob->obmat);
2109         copy_m3_m4(imat, ob->imat);
2110
2111         re->flag |= R_HALO;
2112
2113         for (a=0; a<totvert; a++, mvert++) {
2114                 ok= 1;
2115
2116                 if (ok) {
2117                         hasize= ma->hasize;
2118
2119                         copy_v3_v3(vec, mvert->co);
2120                         mul_m4_v3(mat, vec);
2121
2122                         if (ma->mode & MA_HALOPUNO) {
2123                                 xn= mvert->no[0];
2124                                 yn= mvert->no[1];
2125                                 zn= mvert->no[2];
2126
2127                                 /* transpose ! */
2128                                 nor[0]= imat[0][0]*xn+imat[0][1]*yn+imat[0][2]*zn;
2129                                 nor[1]= imat[1][0]*xn+imat[1][1]*yn+imat[1][2]*zn;
2130                                 nor[2]= imat[2][0]*xn+imat[2][1]*yn+imat[2][2]*zn;
2131                                 normalize_v3(nor);
2132
2133                                 copy_v3_v3(view, vec);
2134                                 normalize_v3(view);
2135
2136                                 zn = dot_v3v3(nor, view);
2137                                 if (zn>=0.0f) hasize= 0.0f;
2138                                 else hasize*= zn*zn*zn*zn;
2139                         }
2140
2141                         if (orco) har= RE_inithalo(re, obr, ma, vec, NULL, orco, hasize, 0.0, seed);
2142                         else har= RE_inithalo(re, obr, ma, vec, NULL, mvert->co, hasize, 0.0, seed);
2143                         if (har) har->lay= ob->lay;
2144                 }
2145                 if (orco) orco+= 3;
2146                 seed++;
2147         }
2148 }
2149
2150 static int verghalo(const void *a1, const void *a2)
2151 {
2152         const HaloRen *har1= *(const HaloRen**)a1;
2153         const HaloRen *har2= *(const HaloRen**)a2;
2154         
2155         if (har1->zs < har2->zs) return 1;
2156         else if (har1->zs > har2->zs) return -1;
2157         return 0;
2158 }
2159
2160 static void sort_halos(Render *re, int totsort)
2161 {
2162         ObjectRen *obr;
2163         HaloRen *har= NULL, **haso;
2164         int a;
2165
2166         if (re->tothalo==0) return;
2167
2168         re->sortedhalos= MEM_callocN(sizeof(HaloRen*)*re->tothalo, "sorthalos");
2169         haso= re->sortedhalos;
2170
2171         for (obr=re->objecttable.first; obr; obr=obr->next) {
2172                 for (a=0; a<obr->tothalo; a++) {
2173                         if ((a & 255)==0) har= obr->bloha[a>>8];
2174                         else har++;
2175
2176                         *(haso++)= har;
2177                 }
2178         }
2179
2180         qsort(re->sortedhalos, totsort, sizeof(HaloRen*), verghalo);
2181 }
2182
2183 /* ------------------------------------------------------------------------- */
2184 /* Displacement Mapping                                                                                                          */
2185 /* ------------------------------------------------------------------------- */
2186
2187 static short test_for_displace(Render *re, Object *ob)
2188 {
2189         /* return 1 when this object uses displacement textures. */
2190         Material *ma;
2191         int i;
2192         
2193         for (i=1; i<=ob->totcol; i++) {
2194                 ma=give_render_material(re, ob, i);
2195                 /* ma->mapto is ORed total of all mapto channels */
2196                 if (ma && (ma->mapto & MAP_DISPLACE)) return 1;
2197         }
2198         return 0;
2199 }
2200
2201 static void displace_render_vert(Render *re, ObjectRen *obr, ShadeInput *shi, VertRen *vr, int vindex, float *scale, float mat[4][4], float imat[3][3])
2202 {
2203         MTFace *tface;
2204         short texco= shi->mat->texco;
2205         float sample=0, displace[3];
2206         char *name;
2207         int i;
2208
2209         /* shi->co is current render coord, just make sure at least some vector is here */
2210         copy_v3_v3(shi->co, vr->co);
2211         /* vertex normal is used for textures type 'col' and 'var' */
2212         copy_v3_v3(shi->vn, vr->n);
2213
2214         if (mat)
2215                 mul_m4_v3(mat, shi->co);
2216
2217         if (imat) {
2218                 shi->vn[0] = dot_v3v3(imat[0], vr->n);
2219                 shi->vn[1] = dot_v3v3(imat[1], vr->n);
2220                 shi->vn[2] = dot_v3v3(imat[2], vr->n);
2221         }
2222
2223         if (texco & TEXCO_UV) {
2224                 shi->totuv= 0;
2225                 shi->actuv= obr->actmtface;
2226
2227                 for (i=0; (tface=RE_vlakren_get_tface(obr, shi->vlr, i, &name, 0)); i++) {
2228                         ShadeInputUV *suv= &shi->uv[i];
2229
2230                         /* shi.uv needs scale correction from tface uv */
2231                         suv->uv[0]= 2*tface->uv[vindex][0]-1.0f;
2232                         suv->uv[1]= 2*tface->uv[vindex][1]-1.0f;
2233                         suv->uv[2]= 0.0f;
2234                         suv->name= name;
2235                         shi->totuv++;
2236                 }
2237         }
2238
2239         /* set all rendercoords, 'texco' is an ORed value for all textures needed */
2240         if ((texco & TEXCO_ORCO) && (vr->orco)) {
2241                 copy_v3_v3(shi->lo, vr->orco);
2242         }
2243         if (texco & TEXCO_GLOB) {
2244                 copy_v3_v3(shi->gl, shi->co);
2245                 mul_m4_v3(re->viewinv, shi->gl);
2246         }
2247         if (texco & TEXCO_NORM) {
2248                 copy_v3_v3(shi->orn, shi->vn);
2249         }
2250         if (texco & TEXCO_REFL) {
2251                 /* not (yet?) */
2252         }
2253         if (texco & TEXCO_STRESS) {
2254                 float *s= RE_vertren_get_stress(obr, vr, 0);
2255
2256                 if (s) {
2257                         shi->stress= *s;
2258                         if (shi->stress<1.0f) shi->stress-= 1.0f;
2259                         else shi->stress= (shi->stress-1.0f)/shi->stress;
2260                 }
2261                 else
2262                         shi->stress= 0.0f;
2263         }
2264
2265         shi->displace[0]= shi->displace[1]= shi->displace[2]= 0.0;
2266         
2267         do_material_tex(shi, re);
2268         
2269         //printf("no=%f, %f, %f\nbefore co=%f, %f, %f\n", vr->n[0], vr->n[1], vr->n[2], 
2270         //vr->co[0], vr->co[1], vr->co[2]);
2271
2272         displace[0]= shi->displace[0] * scale[0];
2273         displace[1]= shi->displace[1] * scale[1];
2274         displace[2]= shi->displace[2] * scale[2];
2275         
2276         if (mat)
2277                 mul_m3_v3(imat, displace);
2278
2279         /* 0.5 could become button once?  */
2280         vr->co[0] += displace[0]; 
2281         vr->co[1] += displace[1];
2282         vr->co[2] += displace[2];
2283         
2284         //printf("after co=%f, %f, %f\n", vr->co[0], vr->co[1], vr->co[2]); 
2285         
2286         /* we just don't do this vertex again, bad luck for other face using same vertex with
2287          * different material... */
2288         vr->flag |= 1;
2289         
2290         /* Pass sample back so displace_face can decide which way to split the quad */
2291         sample  = shi->displace[0]*shi->displace[0];
2292         sample += shi->displace[1]*shi->displace[1];
2293         sample += shi->displace[2]*shi->displace[2];
2294         
2295         vr->accum=sample; 
2296         /* Should be sqrt(sample), but I'm only looking for "bigger".  Save the cycles. */
2297         return;
2298 }
2299
2300 static void displace_render_face(Render *re, ObjectRen *obr, VlakRen *vlr, float *scale, float mat[4][4], float imat[3][3])
2301 {
2302         ShadeInput shi;
2303
2304         /* Warning, This is not that nice, and possibly a bit slow,
2305          * however some variables were not initialized properly in, unless using shade_input_initialize(...), we need to do a memset */
2306         memset(&shi, 0, sizeof(ShadeInput)); 
2307         /* end warning! - Campbell */
2308         
2309         /* set up shadeinput struct for multitex() */
2310         
2311         /* memset above means we don't need this */
2312         /*shi.osatex= 0;*/              /* signal not to use dx[] and dy[] texture AA vectors */
2313
2314         shi.obr= obr;
2315         shi.vlr= vlr;           /* current render face */
2316         shi.mat= vlr->mat;              /* current input material */
2317         shi.thread= 0;
2318         
2319         /* TODO, assign these, displacement with new bumpmap is skipped without - campbell */
2320 #if 0
2321         /* order is not known ? */
2322         shi.v1= vlr->v1;
2323         shi.v2= vlr->v2;
2324         shi.v3= vlr->v3;
2325 #endif
2326
2327         /* Displace the verts, flag is set when done */
2328         if (!vlr->v1->flag)
2329                 displace_render_vert(re, obr, &shi, vlr->v1, 0,  scale, mat, imat);
2330         
2331         if (!vlr->v2->flag)
2332                 displace_render_vert(re, obr, &shi, vlr->v2, 1, scale, mat, imat);
2333
2334         if (!vlr->v3->flag)
2335                 displace_render_vert(re, obr, &shi, vlr->v3, 2, scale, mat, imat);
2336
2337         if (vlr->v4) {
2338                 if (!vlr->v4->flag)
2339                         displace_render_vert(re, obr, &shi, vlr->v4, 3, scale, mat, imat);
2340
2341                 /*      closest in displace value.  This will help smooth edges.   */ 
2342                 if (fabsf(vlr->v1->accum - vlr->v3->accum) > fabsf(vlr->v2->accum - vlr->v4->accum)) vlr->flag |=  R_DIVIDE_24;
2343                 else                                                                                 vlr->flag &= ~R_DIVIDE_24;
2344         }
2345         
2346         /* Recalculate the face normal  - if flipped before, flip now */
2347         if (vlr->v4) {
2348                 normal_quad_v3(vlr->n, vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co);
2349         }
2350         else {
2351                 normal_tri_v3(vlr->n, vlr->v3->co, vlr->v2->co, vlr->v1->co);
2352         }
2353 }
2354
2355 static void do_displacement(Render *re, ObjectRen *obr, float mat[4][4], float imat[3][3])
2356 {
2357         VertRen *vr;
2358         VlakRen *vlr;
2359 //      float min[3]={1e30, 1e30, 1e30}, max[3]={-1e30, -1e30, -1e30};
2360         float scale[3]={1.0f, 1.0f, 1.0f}, temp[3];//, xn
2361         int i; //, texflag=0;
2362         Object *obt;
2363                 
2364         /* Object Size with parenting */
2365         obt=obr->ob;
2366         while (obt) {
2367                 mul_v3_v3v3(temp, obt->size, obt->dscale);
2368                 scale[0]*=temp[0]; scale[1]*=temp[1]; scale[2]*=temp[2];
2369                 obt=obt->parent;
2370         }
2371         
2372         /* Clear all flags */
2373         for (i=0; i<obr->totvert; i++) {
2374                 vr= RE_findOrAddVert(obr, i);
2375                 vr->flag= 0;
2376         }
2377
2378         for (i=0; i<obr->totvlak; i++) {
2379                 vlr=RE_findOrAddVlak(obr, i);
2380                 displace_render_face(re, obr, vlr, scale, mat, imat);
2381         }
2382         
2383         /* Recalc vertex normals */
2384         calc_vertexnormals(re, obr, 0, 0);
2385 }
2386
2387 /* ------------------------------------------------------------------------- */
2388 /* Metaball                                                                                                                              */
2389 /* ------------------------------------------------------------------------- */
2390
2391 static void init_render_mball(Render *re, ObjectRen *obr)
2392 {
2393         Object *ob= obr->ob;
2394         DispList *dl;
2395         VertRen *ver;
2396         VlakRen *vlr, *vlr1;
2397         Material *ma;
2398         float *data, *nors, *orco=NULL, mat[4][4], imat[3][3], xn, yn, zn;
2399         int a, need_orco, vlakindex, *index, negative_scale;
2400         ListBase dispbase= {NULL, NULL};
2401
2402         if (ob!=BKE_mball_basis_find(re->scene, ob))
2403                 return;
2404
2405         mul_m4_m4m4(mat, re->viewmat, ob->obmat);
2406         invert_m4_m4(ob->imat, mat);
2407         copy_m3_m4(imat, ob->imat);
2408         negative_scale = is_negative_m4(mat);
2409
2410         ma= give_render_material(re, ob, 1);
2411
2412         need_orco= 0;
2413         if (ma->texco & TEXCO_ORCO) {
2414                 need_orco= 1;
2415         }
2416
2417         BKE_displist_make_mball_forRender(re->scene, ob, &dispbase);
2418         dl= dispbase.first;
2419         if (dl == NULL) return;
2420
2421         data= dl->verts;
2422         nors= dl->nors;
2423         if (need_orco) {
2424                 orco= get_object_orco(re, ob);
2425
2426                 if (!orco) {
2427                         /* orco hasn't been found in cache - create new one and add to cache */
2428                         orco= BKE_mball_make_orco(ob, &dispbase);
2429                         set_object_orco(re, ob, orco);
2430                 }
2431         }
2432
2433         for (a=0; a<dl->nr; a++, data+=3, nors+=3) {
2434
2435                 ver= RE_findOrAddVert(obr, obr->totvert++);
2436                 copy_v3_v3(ver->co, data);
2437                 mul_m4_v3(mat, ver->co);
2438
2439                 /* render normals are inverted */
2440                 xn= -nors[0];
2441                 yn= -nors[1];
2442                 zn= -nors[2];
2443
2444                 /* transpose ! */
2445                 ver->n[0]= imat[0][0]*xn+imat[0][1]*yn+imat[0][2]*zn;
2446                 ver->n[1]= imat[1][0]*xn+imat[1][1]*yn+imat[1][2]*zn;
2447                 ver->n[2]= imat[2][0]*xn+imat[2][1]*yn+imat[2][2]*zn;
2448                 normalize_v3(ver->n);
2449                 //if (ob->transflag & OB_NEG_SCALE) negate_v3(ver->n);
2450                 
2451                 if (need_orco) {
2452                         ver->orco= orco;
2453                         orco+=3;
2454                 }
2455         }
2456
2457         index= dl->index;
2458         for (a=0; a<dl->parts; a++, index+=4) {
2459
2460                 vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2461                 vlr->v1= RE_findOrAddVert(obr, index[0]);
2462                 vlr->v2= RE_findOrAddVert(obr, index[1]);
2463                 vlr->v3= RE_findOrAddVert(obr, index[2]);
2464                 vlr->v4 = NULL;
2465
2466                 if (negative_scale)
2467                         normal_tri_v3(vlr->n, vlr->v1->co, vlr->v2->co, vlr->v3->co);
2468                 else
2469                         normal_tri_v3(vlr->n, vlr->v3->co, vlr->v2->co, vlr->v1->co);
2470
2471                 vlr->mat= ma;
2472                 vlr->flag= ME_SMOOTH;
2473                 vlr->ec= 0;
2474
2475                 /* mball -too bad- always has triangles, because quads can be non-planar */
2476                 if (index[3] && index[3]!=index[2]) {
2477                         vlr1= RE_findOrAddVlak(obr, obr->totvlak++);
2478                         vlakindex= vlr1->index;
2479                         *vlr1= *vlr;
2480                         vlr1->index= vlakindex;
2481                         vlr1->v2= vlr1->v3;
2482                         vlr1->v3= RE_findOrAddVert(obr, index[3]);
2483                         if (negative_scale)
2484                                 normal_tri_v3(vlr1->n, vlr1->v1->co, vlr1->v2->co, vlr1->v3->co);
2485                         else
2486                                 normal_tri_v3(vlr1->n, vlr1->v3->co, vlr1->v2->co, vlr1->v1->co);
2487                 }
2488         }
2489
2490         /* enforce display lists remade */
2491         BKE_displist_free(&dispbase);
2492 }
2493
2494 /* ------------------------------------------------------------------------- */
2495 /* Surfaces and Curves                                                                                                           */
2496 /* ------------------------------------------------------------------------- */
2497
2498 /* returns amount of vertices added for orco */
2499 static int dl_surf_to_renderdata(ObjectRen *obr, DispList *dl, Material **matar, float *orco, float mat[4][4])
2500 {
2501         VertRen *v1, *v2, *v3, *v4, *ver;
2502         VlakRen *vlr, *vlr1, *vlr2, *vlr3;
2503         float *data, n1[3];
2504         int u, v, orcoret= 0;
2505         int p1, p2, p3, p4, a;
2506         int sizeu, nsizeu, sizev, nsizev;
2507         int startvert, startvlak;
2508         
2509         startvert= obr->totvert;
2510         nsizeu = sizeu = dl->parts; nsizev = sizev = dl->nr; 
2511         
2512         data= dl->verts;
2513         for (u = 0; u < sizeu; u++) {
2514                 v1 = RE_findOrAddVert(obr, obr->totvert++); /* save this for possible V wrapping */
2515                 copy_v3_v3(v1->co, data); data += 3;
2516                 if (orco) {
2517                         v1->orco= orco; orco+= 3; orcoret++;
2518                 }
2519                 mul_m4_v3(mat, v1->co);
2520                 
2521                 for (v = 1; v < sizev; v++) {
2522                         ver= RE_findOrAddVert(obr, obr->totvert++);
2523                         copy_v3_v3(ver->co, data); data += 3;
2524                         if (orco) {
2525                                 ver->orco= orco; orco+= 3; orcoret++;
2526                         }
2527                         mul_m4_v3(mat, ver->co);
2528                 }
2529                 /* if V-cyclic, add extra vertices at end of the row */
2530                 if (dl->flag & DL_CYCL_U) {
2531                         ver= RE_findOrAddVert(obr, obr->totvert++);
2532                         copy_v3_v3(ver->co, v1->co);
2533                         if (orco) {
2534                                 ver->orco= orco; orco+=3; orcoret++; //orcobase + 3*(u*sizev + 0);
2535                         }
2536                 }
2537         }
2538         
2539         /* Done before next loop to get corner vert */
2540         if (dl->flag & DL_CYCL_U) nsizev++;
2541         if (dl->flag & DL_CYCL_V) nsizeu++;
2542         
2543         /* if U cyclic, add extra row at end of column */
2544         if (dl->flag & DL_CYCL_V) {
2545                 for (v = 0; v < nsizev; v++) {
2546                         v1= RE_findOrAddVert(obr, startvert + v);
2547                         ver= RE_findOrAddVert(obr, obr->totvert++);
2548                         copy_v3_v3(ver->co, v1->co);
2549                         if (orco) {
2550                                 ver->orco= orco; orco+=3; orcoret++; //ver->orco= orcobase + 3*(0*sizev + v);
2551                         }
2552                 }
2553         }
2554         
2555         sizeu = nsizeu;
2556         sizev = nsizev;
2557         
2558         startvlak= obr->totvlak;
2559         
2560         for (u = 0; u < sizeu - 1; u++) {
2561                 p1 = startvert + u * sizev; /* walk through face list */
2562                 p2 = p1 + 1;
2563                 p3 = p2 + sizev;
2564                 p4 = p3 - 1;
2565                 
2566                 for (v = 0; v < sizev - 1; v++) {
2567                         v1= RE_findOrAddVert(obr, p1);
2568                         v2= RE_findOrAddVert(obr, p2);
2569                         v3= RE_findOrAddVert(obr, p3);
2570                         v4= RE_findOrAddVert(obr, p4);
2571                         
2572                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2573                         vlr->v1= v1; vlr->v2= v2; vlr->v3= v3; vlr->v4= v4;
2574                         
2575                         normal_quad_v3(n1, vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co);
2576                         
2577                         copy_v3_v3(vlr->n, n1);
2578                         
2579                         vlr->mat= matar[ dl->col];
2580                         vlr->ec= ME_V1V2+ME_V2V3;
2581                         vlr->flag= dl->rt;
2582                         
2583                         add_v3_v3(v1->n, n1);
2584                         add_v3_v3(v2->n, n1);
2585                         add_v3_v3(v3->n, n1);
2586                         add_v3_v3(v4->n, n1);
2587                         
2588                         p1++; p2++; p3++; p4++;
2589                 }
2590         }
2591         /* fix normals for U resp. V cyclic faces */
2592         sizeu--; sizev--;  /* dec size for face array */
2593         if (dl->flag & DL_CYCL_V) {
2594                 
2595                 for (v = 0; v < sizev; v++) {
2596                         /* optimize! :*/
2597                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, v));
2598                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0, v));
2599                         add_v3_v3(vlr1->v1->n, vlr->n);
2600                         add_v3_v3(vlr1->v2->n, vlr->n);
2601                         add_v3_v3(vlr->v3->n, vlr1->n);
2602                         add_v3_v3(vlr->v4->n, vlr1->n);
2603                 }
2604         }
2605         if (dl->flag & DL_CYCL_U) {
2606                 
2607                 for (u = 0; u < sizeu; u++) {
2608                         /* optimize! :*/
2609                         vlr= RE_findOrAddVlak(obr, UVTOINDEX(u, 0));
2610                         vlr1= RE_findOrAddVlak(obr, UVTOINDEX(u, sizev-1));
2611                         add_v3_v3(vlr1->v2->n, vlr->n);
2612                         add_v3_v3(vlr1->v3->n, vlr->n);
2613                         add_v3_v3(vlr->v1->n, vlr1->n);
2614                         add_v3_v3(vlr->v4->n, vlr1->n);
2615                 }
2616         }
2617
2618         /* last vertex is an extra case: 
2619          *
2620          *     ^     ()----()----()----()
2621          *     |     |     |     ||     |
2622          *     u     |     |(0,n)||(0,0)|
2623          *     |     |     ||     |
2624          *     ()====()====[]====()
2625          *     |     |     ||     |
2626          *     |     |(m,n)||(m,0)|
2627          *     |     |     ||     |
2628          *     ()----()----()----()
2629          *     v ->
2630          *  
2631          *  vertex [] is no longer shared, therefore distribute
2632          *  normals of the surrounding faces to all of the duplicates of []
2633          */
2634
2635         if ((dl->flag & DL_CYCL_V) && (dl->flag & DL_CYCL_U)) {
2636                 vlr= RE_findOrAddVlak(obr, UVTOINDEX(sizeu - 1, sizev - 1)); /* (m, n) */
2637                 vlr1= RE_findOrAddVlak(obr, UVTOINDEX(0, 0));  /* (0, 0) */
2638                 add_v3_v3v3(n1, vlr->n, vlr1->n);
2639                 vlr2= RE_findOrAddVlak(obr, UVTOINDEX(0, sizev-1)); /* (0, n) */
2640                 add_v3_v3(n1, vlr2->n);
2641                 vlr3= RE_findOrAddVlak(obr, UVTOINDEX(sizeu-1, 0)); /* (m, 0) */
2642                 add_v3_v3(n1, vlr3->n);
2643                 copy_v3_v3(vlr->v3->n, n1);
2644                 copy_v3_v3(vlr1->v1->n, n1);
2645                 copy_v3_v3(vlr2->v2->n, n1);
2646                 copy_v3_v3(vlr3->v4->n, n1);
2647         }
2648         for (a = startvert; a < obr->totvert; a++) {
2649                 ver= RE_findOrAddVert(obr, a);
2650                 normalize_v3(ver->n);
2651         }
2652         
2653         
2654         return orcoret;
2655 }
2656
2657 static void init_render_dm(DerivedMesh *dm, Render *re, ObjectRen *obr,
2658         int timeoffset, float *orco, float mat[4][4])
2659 {
2660         Object *ob= obr->ob;
2661         int a, end, totvert, vertofs;
2662         short mat_iter;
2663         VertRen *ver;
2664         VlakRen *vlr;
2665         MVert *mvert = NULL;
2666         MFace *mface;
2667         Material *ma;
2668 #ifdef WITH_FREESTYLE
2669         const int *index_mf_to_mpoly = NULL;
2670         const int *index_mp_to_orig = NULL;
2671         FreestyleFace *ffa = NULL;
2672 #endif
2673         /* Curve *cu= ELEM(ob->type, OB_FONT, OB_CURVE) ? ob->data : NULL; */
2674
2675         mvert= dm->getVertArray(dm);
2676         totvert= dm->getNumVerts(dm);
2677
2678         for (a=0; a<totvert; a++, mvert++) {
2679                 ver= RE_findOrAddVert(obr, obr->totvert++);
2680                 copy_v3_v3(ver->co, mvert->co);
2681                 mul_m4_v3(mat, ver->co);
2682
2683                 if (orco) {
2684                         ver->orco= orco;
2685                         orco+=3;
2686                 }
2687         }
2688
2689         if (!timeoffset) {
2690                 /* store customdata names, because DerivedMesh is freed */
2691                 RE_set_customdata_names(obr, &dm->faceData);
2692
2693                 /* still to do for keys: the correct local texture coordinate */
2694
2695                 /* faces in order of color blocks */
2696                 vertofs= obr->totvert - totvert;
2697                 for (mat_iter= 0; (mat_iter < ob->totcol || (mat_iter==0 && ob->totcol==0)); mat_iter++) {
2698
2699                         ma= give_render_material(re, ob, mat_iter+1);
2700                         end= dm->getNumTessFaces(dm);
2701                         mface= dm->getTessFaceArray(dm);
2702
2703 #ifdef WITH_FREESTYLE
2704                         if (ob->type == OB_MESH) {
2705                                 Mesh *me= ob->data;
2706                                 index_mf_to_mpoly= dm->getTessFaceDataArray(dm, CD_ORIGINDEX);
2707                                 index_mp_to_orig= dm->getPolyDataArray(dm, CD_ORIGINDEX);
2708                                 ffa= CustomData_get_layer(&me->pdata, CD_FREESTYLE_FACE);
2709                         }
2710 #endif
2711
2712                         for (a=0; a<end; a++, mface++) {
2713                                 int v1, v2, v3, v4, flag;
2714
2715                                 if (mface->mat_nr == mat_iter) {
2716                                         float len;
2717
2718                                         v1= mface->v1;
2719                                         v2= mface->v2;
2720                                         v3= mface->v3;
2721                                         v4= mface->v4;
2722                                         flag= mface->flag & ME_SMOOTH;
2723
2724                                         vlr= RE_findOrAddVlak(obr, obr->totvlak++);
2725                                         vlr->v1= RE_findOrAddVert(obr, vertofs+v1);
2726                                         vlr->v2= RE_findOrAddVert(obr, vertofs+v2);
2727                                         vlr->v3= RE_findOrAddVert(obr, vertofs+v3);
2728                                         if (v4) vlr->v4= RE_findOrAddVert(obr, vertofs+v4);
2729                                         else vlr->v4 = NULL;
2730
2731                                         /* render normals are inverted in render */
2732                                         if (vlr->v4)
2733                                                 len= normal_quad_v3(vlr->n, vlr->v4->co, vlr->v3->co, vlr->v2->co, vlr->v1->co);
2734                                         else
2735                                                 len= normal_tri_v3(vlr->n, vlr->v3->co, vlr->v2->co, vlr->v1->co);
2736
2737                                         vlr->mat= ma;
2738                                         vlr->flag= flag;
2739                                         vlr->ec= 0; /* mesh edges rendered separately */
2740 #ifdef WITH_FREESTYLE
2741                                         if (ffa) {
2742                                                 int index = (index_mf_to_mpoly) ? DM_origindex_mface_mpoly(index_mf_to_mpoly, index_mp_to_orig, a) : a;
2743                                                 vlr->freestyle_face_mark= (ffa[index].flag & FREESTYLE_FACE_MARK) ? 1 : 0;
2744                                         }
2745                                         else {
2746                                                 vlr->freestyle_face_mark= 0;
2747                                         }
2748 #endif
2749
2750                                         if (len==0) obr->totvlak--;
2751                                         else {
2752                                                 CustomDataLayer *layer;
2753                                                 MTFace *mtface, *mtf;
2754                                                 MCol *mcol, *mc;
2755                                                 int index, mtfn= 0, mcn= 0;
2756                                                 char *name;
2757
2758                                                 for (index=0; index<dm->faceData.totlayer; index++) {
2759                                                         layer= &dm->faceData.layers[index];
2760                                                         name= layer->name;
2761
2762                                                         if (layer->type == CD_MTFACE && mtfn < MAX_MTFACE) {
2763                                                                 mtf= RE_vlakren_get_tface(obr, vlr, mtfn++, &name, 1);
2764                                                                 mtface= (MTFace*)layer->data;
2765                                                                 *mtf= mtface[a];
2766                                                         }
2767                                                         else if (layer->type == CD_MCOL && mcn < MAX_MCOL) {
2768                                                                 mc= RE_vlakren_get_mcol(obr, vlr, mcn++, &name, 1);
2769                                                                 mcol= (MCol*)layer->data;
2770                                                                 memcpy(mc, &mcol[a*4], sizeof(MCol)*4);
2771                                                         }
2772                                                 }
2773                                         }
2774                                 }
2775                         }
2776                 }
2777
2778                 /* Normals */
2779                 calc_vertexnormals(re, obr, 0, 0);
2780         }
2781
2782 }
2783
2784 static void init_render_surf(Render *re, ObjectRen *obr, int timeoffset)
2785 {
2786         Object *ob= obr->ob;
2787         Nurb *nu = NULL;
2788         Curve *cu;
2789         ListBase displist= {NULL, NULL};
2790         DispList *dl;
2791         Material **matar;
2792         float *orco=NULL, mat[4][4];
2793         int a, totmat, need_orco=0;
2794         DerivedMesh *dm= NULL;
2795
2796         cu= ob->data;
2797         nu= cu->nurb.first;
2798         if (nu == NULL) return;
2799
2800         mul_m4_m4m4(mat, re->viewmat, ob->obmat);
2801         invert_m4_m4(ob->imat, mat);
2802
2803         /* material array */
2804         totmat= ob->totcol+1;
2805         matar= MEM_callocN(sizeof(Material*)*totmat, "init_render_surf matar");
2806
2807         for (a=0; a<totmat; a++) {
2808                 matar[a]= give_render_material(re, ob, a+1);
2809
2810                 if (matar[a] && matar[a]->texco & TEXCO_ORCO)
2811                         need_orco= 1;
2812         }
2813
2814         if (ob->parent && (ob->parent->type==OB_LATTICE)) need_orco= 1;
2815
2816         BKE_displist_make_surf(re->scene, ob, &displist, &dm, 1, 0, 1);
2817
2818         if (dm) {
2819                 if (need_orco) {
2820                         orco = get_object_orco(re, ob);
2821                         if (!orco) {
2822                                 orco= BKE_displist_make_orco(re->scene, ob, dm, 1, 1);
2823                                 if (orco) {
2824                                         set_object_orco(re, ob, orco);
2825                                 }
2826                         }
2827                 }
2828
2829                 init_render_dm(dm, re, obr, timeoffset, orco, mat);
2830                 dm->release(dm);
2831         }
2832         else {
2833                 if (need_orco) {
2834                         orco = get_object_orco(re, ob);
2835                         if (!orco) {
2836                                 orco = BKE_curve_surf_make_orco(ob);
2837                                 set_object_orco(re, ob, orco);
2838                         }
2839                 }
2840
2841                 /* walk along displaylist and create rendervertices/-faces */
2842                 for (dl=displist.first; dl; dl=dl->next) {
2843                         /* watch out: u ^= y, v ^= x !! */
2844                         if (dl->type==DL_SURF)
2845                                 orco+= 3*dl_surf_to_renderdata(obr, dl, matar, orco, mat);
2846                 }
2847         }
2848
2849         BKE_displist_free(&displist);
2850
2851         MEM_freeN(matar);
2852 }
2853
2854 static void init_render_curve(Render *re, ObjectRen *obr, int timeoffset)
2855 {
2856         Object *ob= obr->ob;
2857         Curve *cu;
2858         VertRen *ver;
2859         VlakRen *vlr;
2860         DispList *dl;
2861         DerivedMesh *dm = NULL;
2862         ListBase disp={NULL, NULL};
2863         Material **matar;
2864         float *data, *fp, *orco=NULL;
2865         float n[3], mat[4][4], nmat[4][4];
2866         int nr, startvert, a, b;
2867         int need_orco=0, totmat;
2868
2869         cu= ob->data;
2870         if (ob->type==OB_FONT && cu->str==NULL) return;
2871         else if (ob->type==OB_CURVE && cu->nurb.first==NULL) return;
2872
2873         BKE_displist_make_curveTypes_forRender(re->scene, ob, &disp, &dm, 0, 1);
2874         dl= disp.first;
2875         if (dl==NULL) return;
2876         
2877         mul_m4_m4m4(mat, re->viewmat, ob->obmat);
2878         invert_m4_m4(ob->imat, mat);
2879
2880         /* local object -> world space transform for normals */
2881         copy_m4_m4(nmat, mat);
2882         transpose_m4(nmat);
2883         invert_m4(nmat);
2884
2885         /* material array */
2886         totmat= ob->totcol+1;
2887         matar= MEM_callocN(sizeof(Material*)*totmat, "init_render_surf matar");
2888
2889         for (a=0; a<totmat; a++) {
2890                 matar[a]= give_render_material(re, ob, a+1);
2891
2892                 if (matar[a] && matar[a]->texco & TEXCO_ORCO)
2893                         need_orco= 1;
2894         }
2895
2896         if (dm) {
2897                 if (need_orco) {
2898                         orco = get_object_orco(re, ob);
2899                         if (!orco) {
2900                                 orco = BKE_displist_make_orco(re->scene, ob, dm, 1, 1);
2901                                 if (orco) {
2902                                         set_object_orco(re, ob, orco);
2903                                 }
2904                         }
2905                 }
2906
2907                 init_render_dm(dm, re, obr, timeoffset, orco, mat);
2908                 dm->release(dm);
2909         }
2910         else {
2911                 if (need_orco) {
2912                         orco = get_object_orco(re, ob);
2913                         if (!orco) {
2914                                 orco = BKE_curve_make_orco(re->scene, ob, NULL);
2915                                 set_object_orco(re, ob, orco);
2916                         }
2917                 }
2918
2919                 while (dl) {
2920                         if (dl->col > ob->totcol) {
2921                                 /* pass */
2922                         }
2923                         else if (dl->type==DL_INDEX3) {
2924                                 int *index;
2925
2926                                 startvert= obr->totvert;
2927                                 data= dl->verts;
2928
2929                                 for (a=0; a<dl->nr; a++, data+=3) {
2930                                         ver= RE_findOrAddVert(obr, obr->totvert++);
2931                                         copy_v3_v3(ver->co, data);
2932
2933                                         mul_m4_v3(mat, ver->co);