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 { |
36 |
|
float brt; /* brightness (for comparison) */ |
37 |
|
} CNTPTR; /* contribution pointer */ |
38 |
|
|
39 |
< |
static CONTRIB *srccnt; /* source contributions in direct() */ |
40 |
< |
static CNTPTR *cntord; /* source ordering in direct() */ |
39 |
> |
static CONTRIB *srccnt = NULL; /* source contributions in direct() */ |
40 |
> |
static CNTPTR *cntord = NULL; /* source ordering in direct() */ |
41 |
|
static int maxcntr = 0; /* size of contribution arrays */ |
42 |
|
|
43 |
|
static int cntcmp(const void *p1, const void *p2); |
46 |
|
void |
47 |
|
marksources(void) /* find and mark source objects */ |
48 |
|
{ |
49 |
< |
int foundsource = 0; |
49 |
> |
int indirect = 0; |
50 |
|
int i; |
51 |
|
OBJREC *o, *m; |
52 |
|
int ns; |
53 |
+ |
/* call us only once! */ |
54 |
+ |
if (nsources) |
55 |
+ |
error(CONSISTENCY, "Multiple calls to marksources!"); |
56 |
|
/* initialize dispatch table */ |
57 |
|
initstypes(); |
58 |
|
/* find direct sources */ |
63 |
|
if (!issurface(o->otype) || o->omod == OVOID) |
64 |
|
continue; |
65 |
|
/* find material */ |
66 |
< |
m = findmaterial(objptr(o->omod)); |
66 |
> |
m = findmaterial(o); |
67 |
|
if (m == NULL) |
68 |
|
continue; |
69 |
|
if (m->otype == MAT_CLIP) { |
83 |
|
if (m->otype == MAT_GLOW && |
84 |
|
o->otype != OBJ_SOURCE && |
85 |
|
m->oargs.farg[3] <= FTINY) { |
86 |
< |
foundsource += (ambounce > 0); |
86 |
> |
indirect += (ambounce > 0); |
87 |
|
continue; /* don't track these */ |
88 |
|
} |
89 |
|
if (sfun[o->otype].of == NULL || |
100 |
|
source[ns].sl.prox = m->oargs.farg[3]; |
101 |
|
if (source[ns].sflags & SDISTANT) { |
102 |
|
source[ns].sflags |= SSKIP; |
103 |
< |
foundsource += (ambounce > 0); |
103 |
> |
indirect += (ambounce > 0); |
104 |
|
} |
105 |
|
} else if (m->otype == MAT_SPOT) { |
106 |
|
if (source[ns].sflags & SDISTANT) |
116 |
|
source[ns].sflags |= SSKIP; |
117 |
|
} |
118 |
|
} |
119 |
< |
foundsource += !(source[ns].sflags & SSKIP); |
119 |
> |
maxcntr += !(source[ns].sflags & SSKIP); |
120 |
|
} |
121 |
< |
if (!foundsource) { |
122 |
< |
error(WARNING, "no light sources found"); |
123 |
< |
return; |
121 |
> |
if (!maxcntr) { |
122 |
> |
if (!indirect) |
123 |
> |
error(WARNING, "no light sources found"); |
124 |
> |
return; /* no direct calculation, it seems */ |
125 |
|
} |
126 |
|
#if SHADCACHE |
127 |
|
for (ns = 0; ns < nsources; ns++) /* initialize obstructor cache */ |
132 |
|
markvirtuals(); /* find and add virtual sources */ |
133 |
|
|
134 |
|
/* allocate our contribution arrays */ |
135 |
< |
maxcntr = nsources + MAXSPART; /* start with this many */ |
135 |
> |
maxcntr += MAXSPART; /* start with this many */ |
136 |
|
srccnt = (CONTRIB *)malloc(maxcntr*sizeof(CONTRIB)); |
137 |
|
cntord = (CNTPTR *)malloc(maxcntr*sizeof(CNTPTR)); |
138 |
|
if ((srccnt != NULL) & (cntord != NULL)) |
148 |
|
int i; |
149 |
|
OBJREC *o, *m; |
150 |
|
int ns; |
151 |
+ |
/* call us only once! */ |
152 |
+ |
if (nsources) |
153 |
+ |
error(CONSISTENCY, "Multiple calls to distantsources!"); |
154 |
|
/* initialize dispatch table */ |
155 |
|
initstypes(); |
156 |
|
/* sources needed for sourcehit() */ |
161 |
|
if ((o->otype != OBJ_SOURCE) | (o->omod == OVOID)) |
162 |
|
continue; |
163 |
|
/* find material */ |
164 |
< |
m = findmaterial(objptr(o->omod)); |
164 |
> |
m = findmaterial(o); |
165 |
|
if (m == NULL) |
166 |
|
continue; |
167 |
|
if (!islight(m->otype)) |
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 |
|
} |
301 |
|
|
302 |
|
static int |
303 |
|
transillum( /* check if material is transparent illum */ |
304 |
< |
OBJECT obj |
304 |
> |
OBJREC *m |
305 |
|
) |
306 |
|
{ |
307 |
< |
OBJREC *m = findmaterial(objptr(obj)); |
301 |
< |
|
307 |
> |
m = findmaterial(m); |
308 |
|
if (m == NULL) |
309 |
|
return(1); |
310 |
|
if (m->otype != MAT_ILLUM) |
337 |
|
*/ |
338 |
|
if (2.*PI*(1. - DOT(source[i].sloc,r->rdir)) > source[i].ss2) |
339 |
|
continue; |
340 |
< |
/* is it the only possibility? */ |
341 |
< |
if (first == last) { |
340 |
> |
/* is it what we aimed for? */ |
341 |
> |
if (i == r->rsrc) { |
342 |
|
r->ro = source[i].so; |
343 |
|
break; |
344 |
|
} |
350 |
|
glowsrc = i; |
351 |
|
continue; |
352 |
|
} |
353 |
< |
if (transillum(source[i].so->omod)) { |
353 |
> |
if (transillum(source[i].so)) { |
354 |
|
if (transrc < 0) |
355 |
|
transrc = i; |
356 |
|
continue; |
370 |
|
return(0); /* nothing usable */ |
371 |
|
} |
372 |
|
/* |
373 |
< |
* Make assignments. |
373 |
> |
* Assign object index |
374 |
|
*/ |
375 |
|
r->robj = objndx(r->ro); |
370 |
– |
for (i = 0; i < 3; i++) |
371 |
– |
r->ron[i] = -r->rdir[i]; |
372 |
– |
r->rod = 1.0; |
373 |
– |
r->pert[0] = r->pert[1] = r->pert[2] = 0.0; |
374 |
– |
r->uv[0] = r->uv[1] = 0.0; |
375 |
– |
r->rox = NULL; |
376 |
|
return(1); |
377 |
|
} |
378 |
|
|
415 |
|
multDirectPmap(r); |
416 |
|
return; |
417 |
|
} |
418 |
– |
|
418 |
|
/* NOTE: srccnt and cntord global so no recursion */ |
419 |
< |
if (nsources <= 0) |
420 |
< |
return; /* no sources?! */ |
421 |
< |
/* potential contributions */ |
422 |
< |
initsrcindex(&si); |
419 |
> |
if (maxcntr <= 0) |
420 |
> |
return; /* no direct?! */ |
421 |
> |
|
422 |
> |
initsrcindex(&si); /* potential contributions */ |
423 |
|
for (sn = 0; srcray(&sr, r, &si); sn++) { |
424 |
|
if (sn >= maxcntr) { |
425 |
|
maxcntr = sn + MAXSPART; |
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); |
480 |
|
/* compute number to check */ |
481 |
|
nshadcheck = pow((double)ncnts, shadcert) + .5; |
482 |
|
/* modify threshold */ |
483 |
< |
if (ncnts > MINSHADCNT) |
481 |
< |
ourthresh = shadthresh / r->rweight; |
482 |
< |
else |
483 |
< |
ourthresh = 0; |
483 |
> |
ourthresh = shadthresh / r->rweight; |
484 |
|
/* test for shadows */ |
485 |
|
for (nhits = 0, hwt = 0.0, sn = 0; sn < ncnts; |
486 |
|
hwt += (double)source[scp->sno].nhits / |
487 |
|
(double)source[scp->sno].ntests, |
488 |
|
sn++) { |
489 |
|
/* check threshold */ |
490 |
< |
if ((sn+nshadcheck>=ncnts ? cntord[sn].brt : |
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 |
|
|
618 |
|
sr.gecc = r->gecc; |
619 |
|
sr.slights = r->slights; |
620 |
|
rayvalue(&sr); /* eval. source ray */ |
621 |
< |
if (bright(sr.rcol) <= FTINY) { |
621 |
> |
if (pbright(sr.rcol) <= FTINY) { |
622 |
|
#if SHADCACHE |
623 |
|
srcblocker(&sr); /* add blocker to cache */ |
624 |
|
#endif |
633 |
|
} |
634 |
|
/* other factors */ |
635 |
|
d *= si.dom * r->rot / (4.*PI*nsamps); |
636 |
< |
scalecolor(sr.rcol, d); |
636 |
> |
scalescolor(sr.rcol, d); |
637 |
|
} else { |
638 |
|
/* PMAP: Add ambient inscattering from |
639 |
|
* volume photons; note we reverse the |
644 |
|
sr.rdir [2] = -r -> rdir [2]; |
645 |
|
sr.gecc = r -> gecc; |
646 |
|
inscatterVolumePmap(&sr, sr.rcol); |
647 |
< |
scalecolor(sr.rcol, r -> rot / nsamps); |
647 |
> |
scalescolor(sr.rcol, r -> rot / nsamps); |
648 |
|
} |
649 |
< |
multcolor(sr.rcol, r->cext); |
650 |
< |
multcolor(sr.rcol, r->albedo); |
651 |
< |
multcolor(sr.rcol, cvext); |
652 |
< |
addcolor(r->rcol, sr.rcol); /* add it in */ |
649 |
> |
smultcolor(sr.rcol, r->cext); |
650 |
> |
smultcolor(sr.rcol, r->albedo); |
651 |
> |
smultcolor(sr.rcol, cvext); |
652 |
> |
saddscolor(r->rcol, sr.rcol); /* add it in */ |
653 |
|
} |
654 |
|
} |
655 |
|
samplendx = oldsampndx; |
673 |
|
*/ |
674 |
|
|
675 |
|
static int |
676 |
< |
weaksrcmat(OBJECT obj) /* identify material */ |
676 |
> |
weaksrcmat(OBJREC *m) /* identify material */ |
677 |
|
{ |
678 |
< |
OBJREC *m = findmaterial(objptr(obj)); |
678 |
< |
|
678 |
> |
m = findmaterial(m); |
679 |
|
if (m == NULL) return(0); |
680 |
|
return((m->otype==MAT_ILLUM) | (m->otype==MAT_GLOW)); |
681 |
|
} |
682 |
|
|
683 |
|
#define illumblock(m, r) (!(source[r->rsrc].sflags&SVIRTUAL) && \ |
684 |
|
r->rod > 0.0 && \ |
685 |
< |
weaksrcmat(source[r->rsrc].so->omod)) |
685 |
> |
weaksrcmat(source[r->rsrc].so)) |
686 |
|
|
687 |
|
/* wrongsource * |
688 |
|
* |
750 |
|
{ |
751 |
|
/* check for over-counting */ |
752 |
|
if (badcomponent(m, r)) { |
753 |
< |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
753 |
> |
scolorblack(r->rcoef); |
754 |
|
return(1); |
755 |
|
} |
756 |
|
if (wrongsource(m, r)) { |
757 |
< |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
757 |
> |
scolorblack(r->rcoef); |
758 |
|
return(1); |
759 |
|
} |
760 |
|
/* check for passed illum */ |
766 |
|
} |
767 |
|
/* check for invisibility */ |
768 |
|
if (srcignore(m, r)) { |
769 |
< |
setcolor(r->rcoef, 0.0, 0.0, 0.0); |
769 |
> |
scolorblack(r->rcoef); |
770 |
|
return(1); |
771 |
|
} |
772 |
|
/* otherwise treat as source */ |
773 |
< |
/* check for behind */ |
774 |
< |
if (r->rod < 0.0) |
773 |
> |
if (r->rod < 0.0) { /* check for behind */ |
774 |
> |
if (!backvis) |
775 |
> |
raytrans(r); /* used to return black */ |
776 |
|
return(1); |
777 |
+ |
} |
778 |
|
/* check for outside spot */ |
779 |
|
if (m->otype==MAT_SPOT && spotout(r, makespot(m))) |
780 |
|
return(1); |
781 |
|
/* get distribution pattern */ |
782 |
|
raytexture(r, m->omod); |
783 |
|
/* get source color */ |
784 |
< |
setcolor(r->rcol, m->oargs.farg[0], |
784 |
> |
setscolor(r->rcol, m->oargs.farg[0], |
785 |
|
m->oargs.farg[1], |
786 |
|
m->oargs.farg[2]); |
787 |
|
/* modify value */ |
788 |
< |
multcolor(r->rcol, r->pcol); |
788 |
> |
smultscolor(r->rcol, r->pcol); |
789 |
|
return(1); |
790 |
|
} |