27 |
|
typedef struct { |
28 |
|
int sno; /* source number */ |
29 |
|
FVECT dir; /* source direction */ |
30 |
< |
COLOR coef; /* material coefficient */ |
31 |
< |
COLOR val; /* contribution */ |
30 |
> |
SCOLOR coef; /* material coefficient */ |
31 |
> |
SCOLOR val; /* contribution */ |
32 |
|
} CONTRIB; /* direct contribution */ |
33 |
|
|
34 |
|
typedef struct { |
200 |
|
while (nsources--) |
201 |
|
freeobscache(&source[nsources]); |
202 |
|
#endif |
203 |
< |
free((void *)source); |
203 |
> |
free(source); |
204 |
|
source = NULL; |
205 |
|
nsources = 0; |
206 |
|
} |
207 |
|
markclip(NULL); |
208 |
|
if (maxcntr <= 0) |
209 |
|
return; |
210 |
< |
free((void *)srccnt); |
210 |
> |
free(srccnt); |
211 |
|
srccnt = NULL; |
212 |
< |
free((void *)cntord); |
212 |
> |
free(cntord); |
213 |
|
cntord = NULL; |
214 |
|
maxcntr = 0; |
215 |
|
} |
216 |
|
|
217 |
|
|
218 |
|
int |
219 |
< |
srcray( /* send a ray to a source, return domega */ |
220 |
< |
RAY *sr, /* returned source ray */ |
221 |
< |
RAY *r, /* ray which hit object */ |
219 |
> |
srcray( /* aim a ray at a source, return domega */ |
220 |
> |
RAY *sr, /* prepared source ray */ |
221 |
> |
RAY *r, /* originating ray (or NULL) */ |
222 |
|
SRCINDEX *si /* source sample index */ |
223 |
|
) |
224 |
|
{ |
231 |
|
sr->rmax = 0.0; |
232 |
|
|
233 |
|
while ((d = nextssamp(sr, si)) != 0.0) { |
234 |
< |
sr->rsrc = si->sn; /* remember source */ |
234 |
> |
sr->rsrc = si->sn; /* remember source */ |
235 |
|
srcp = source + si->sn; |
236 |
|
if (srcp->sflags & SDISTANT) { |
237 |
|
if (srcp->sflags & SSPOT && spotout(sr, srcp->sl.s)) |
435 |
|
scp->sno = sr.rsrc; |
436 |
|
#if SHADCACHE /* check shadow cache */ |
437 |
|
if (si.np == 1 && srcblocked(&sr)) { |
438 |
< |
cntord[sn].brt = 0.0; |
438 |
> |
cntord[sn].brt = 0.0; /* & count as test */ |
439 |
> |
if (source[scp->sno].ntests++ > 0xfffffff0) { |
440 |
> |
source[scp->sno].ntests >>= 1; |
441 |
> |
source[scp->sno].nhits >>= 1; |
442 |
> |
} |
443 |
|
continue; |
444 |
|
} |
445 |
|
#endif |
446 |
|
/* compute coefficient */ |
447 |
|
(*f)(scp->coef, p, sr.rdir, si.dom); |
448 |
< |
cntord[sn].brt = intens(scp->coef); |
448 |
> |
cntord[sn].brt = sintens(scp->coef); |
449 |
|
if (cntord[sn].brt <= 0.0) |
450 |
|
continue; |
451 |
|
VCOPY(scp->dir, sr.rdir); |
452 |
< |
copycolor(sr.rcoef, scp->coef); |
452 |
> |
copyscolor(sr.rcoef, scp->coef); |
453 |
|
/* compute potential */ |
454 |
|
sr.revf = srcvalue; |
455 |
|
rayvalue(&sr); |
456 |
< |
multcolor(sr.rcol, sr.rcoef); |
457 |
< |
copycolor(scp->val, sr.rcol); |
458 |
< |
cntord[sn].brt = bright(sr.rcol); |
456 |
> |
smultscolor(sr.rcol, sr.rcoef); |
457 |
> |
copyscolor(scp->val, sr.rcol); |
458 |
> |
cntord[sn].brt = pbright(sr.rcol); |
459 |
|
} |
460 |
|
/* sort contributions */ |
461 |
|
qsort(cntord, sn, sizeof(CNTPTR), cntcmp); |
490 |
|
if (sn >= MINSHADCNT && |
491 |
|
(sn+nshadcheck>=ncnts ? cntord[sn].brt : |
492 |
|
cntord[sn].brt-cntord[sn+nshadcheck].brt) |
493 |
< |
< ourthresh*bright(r->rcol)) |
493 |
> |
< ourthresh*pbright(r->rcol)) |
494 |
|
break; |
495 |
|
scp = srccnt + cntord[sn].sndx; |
496 |
|
/* test for hit */ |
497 |
< |
rayorigin(&sr, SHADOW, r, NULL); |
498 |
< |
copycolor(sr.rcoef, scp->coef); |
497 |
> |
rayorigin(&sr, thrudir(r,scp->dir) ? TSHADOW : RSHADOW, r, NULL); |
498 |
> |
copyscolor(sr.rcoef, scp->coef); |
499 |
|
VCOPY(sr.rdir, scp->dir); |
500 |
|
sr.rsrc = scp->sno; |
501 |
|
/* keep statistics */ |
510 |
|
raycont(&sr); |
511 |
|
if (trace != NULL) |
512 |
|
(*trace)(&sr); /* trace execution */ |
513 |
< |
if (bright(sr.rcol) <= FTINY) { |
513 |
> |
if (scolor_mean(sr.rcol) <= FTINY) { |
514 |
|
#if SHADCACHE |
515 |
|
if ((scp <= srccnt || scp[-1].sno != scp->sno) |
516 |
|
&& (scp >= srccnt+ncnts-1 || |
520 |
|
continue; /* missed! */ |
521 |
|
} |
522 |
|
rayparticipate(&sr); |
523 |
< |
multcolor(sr.rcol, sr.rcoef); |
524 |
< |
copycolor(scp->val, sr.rcol); |
523 |
> |
smultscolor(sr.rcol, sr.rcoef); |
524 |
> |
copyscolor(scp->val, sr.rcol); |
525 |
|
} else if (trace != NULL && |
526 |
|
(source[scp->sno].sflags & (SDISTANT|SVIRTUAL|SFOLLOW)) |
527 |
|
== (SDISTANT|SFOLLOW) && |
530 |
|
/* skip call to rayparticipate() & scp->val update */ |
531 |
|
} |
532 |
|
/* add contribution if hit */ |
533 |
< |
addcolor(r->rcol, scp->val); |
533 |
> |
saddscolor(r->rcol, scp->val); |
534 |
|
nhits++; |
535 |
|
source[scp->sno].nhits++; |
536 |
|
} |
550 |
|
prob = hwt * (double)source[scp->sno].nhits / |
551 |
|
(double)source[scp->sno].ntests; |
552 |
|
if (prob < 1.0) |
553 |
< |
scalecolor(scp->val, prob); |
554 |
< |
addcolor(r->rcol, scp->val); |
553 |
> |
scalescolor(scp->val, prob); |
554 |
> |
saddscolor(r->rcol, scp->val); |
555 |
|
} |
556 |
|
} |
557 |
|
|
596 |
|
setcolor(cvext, re > 92. ? 0. : exp(-re), |
597 |
|
ge > 92. ? 0. : exp(-ge), |
598 |
|
be > 92. ? 0. : exp(-be)); |
599 |
< |
if (intens(cvext) <= FTINY) |
599 |
> |
if (intens(cvext) <= FTINY*FTINY) |
600 |
|
break; /* too far away */ |
601 |
|
sr.rorg[0] = r->rorg[0] + r->rdir[0]*t; |
602 |
|
sr.rorg[1] = r->rorg[1] + r->rdir[1]*t; |
603 |
|
sr.rorg[2] = r->rorg[2] + r->rdir[2]*t; |
604 |
|
|
605 |
|
if (!volumePhotonMapping) { |
606 |
+ |
sr.parent = r; /* hack for preemptive test */ |
607 |
+ |
if (srcskip(r->slights[i], &sr)) |
608 |
+ |
continue; |
609 |
|
initsrcindex(&si); /* sample ray to this source */ |
610 |
|
si.sn = r->slights[i]; |
611 |
|
nopart(&si, &sr); |
621 |
|
sr.gecc = r->gecc; |
622 |
|
sr.slights = r->slights; |
623 |
|
rayvalue(&sr); /* eval. source ray */ |
624 |
< |
if (bright(sr.rcol) <= FTINY) { |
624 |
> |
if (pbright(sr.rcol) <= FTINY) { |
625 |
|
#if SHADCACHE |
626 |
|
srcblocker(&sr); /* add blocker to cache */ |
627 |
|
#endif |
636 |
|
} |
637 |
|
/* other factors */ |
638 |
|
d *= si.dom * r->rot / (4.*PI*nsamps); |
639 |
< |
scalecolor(sr.rcol, d); |
639 |
> |
scalescolor(sr.rcol, d); |
640 |
|
} else { |
641 |
|
/* PMAP: Add ambient inscattering from |
642 |
|
* volume photons; note we reverse the |
647 |
|
sr.rdir [2] = -r -> rdir [2]; |
648 |
|
sr.gecc = r -> gecc; |
649 |
|
inscatterVolumePmap(&sr, sr.rcol); |
650 |
< |
scalecolor(sr.rcol, r -> rot / nsamps); |
650 |
> |
scalescolor(sr.rcol, r -> rot / nsamps); |
651 |
|
} |
652 |
< |
multcolor(sr.rcol, r->cext); |
653 |
< |
multcolor(sr.rcol, r->albedo); |
654 |
< |
multcolor(sr.rcol, cvext); |
655 |
< |
addcolor(r->rcol, sr.rcol); /* add it in */ |
652 |
> |
smultcolor(sr.rcol, r->cext); |
653 |
> |
smultcolor(sr.rcol, r->albedo); |
654 |
> |
smultcolor(sr.rcol, cvext); |
655 |
> |
saddscolor(r->rcol, sr.rcol); /* add it in */ |
656 |
|
} |
657 |
|
} |
658 |
|
samplendx = oldsampndx; |
753 |
|
{ |
754 |
|
/* check for over-counting */ |
755 |
|
if (badcomponent(m, r)) { |
756 |
< |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
756 |
> |
scolorblack(r->rcoef); |
757 |
|
return(1); |
758 |
|
} |
759 |
|
if (wrongsource(m, r)) { |
760 |
< |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
760 |
> |
scolorblack(r->rcoef); |
761 |
|
return(1); |
762 |
|
} |
763 |
|
/* check for passed illum */ |
769 |
|
} |
770 |
|
/* check for invisibility */ |
771 |
|
if (srcignore(m, r)) { |
772 |
< |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
772 |
> |
scolorblack(r->rcoef); |
773 |
|
return(1); |
774 |
|
} |
775 |
|
/* otherwise treat as source */ |
784 |
|
/* get distribution pattern */ |
785 |
|
raytexture(r, m->omod); |
786 |
|
/* get source color */ |
787 |
< |
setcolor(r->rcol, m->oargs.farg[0], |
787 |
> |
setscolor(r->rcol, m->oargs.farg[0], |
788 |
|
m->oargs.farg[1], |
789 |
|
m->oargs.farg[2]); |
790 |
|
/* modify value */ |
791 |
< |
multcolor(r->rcol, r->pcol); |
791 |
> |
smultscolor(r->rcol, r->pcol); |
792 |
|
return(1); |
793 |
|
} |