44 |
|
|
45 |
|
#define AMBFLUSH (BUFSIZ/AMBVALSIZ) |
46 |
|
|
47 |
< |
#define newambval() (AMBVAL *)malloc(sizeof(AMBVAL)) |
47 |
> |
#define AVSIZE (sizeof(AMBVAL)-sizeof(SCOLOR)+sizeof(COLORV)*NCSAMP) |
48 |
> |
#define newambval() (AMBVAL *)malloc(AVSIZE) |
49 |
|
|
50 |
< |
#define tfunc(lwr, x, upr) (((x)-(lwr))/((upr)-(lwr))) |
50 |
> |
#define tfunc(x0, x, x1) (((x)-(x0))/((x1)-(x0))) |
51 |
|
|
52 |
< |
static void initambfile(int creat); |
52 |
> |
static void initambfile(int cre8); |
53 |
|
static void avsave(AMBVAL *av); |
54 |
|
static AMBVAL *avstore(AMBVAL *aval); |
55 |
|
static AMBTREE *newambtree(void); |
63 |
|
static void sortambvals(void); |
64 |
|
|
65 |
|
static int plugaleak(RAY *r, AMBVAL *ap, FVECT anorm, double ang); |
66 |
< |
static double sumambient(COLOR acol, RAY *r, FVECT rn, int al, |
66 |
> |
static double sumambient(SCOLOR acol, RAY *r, FVECT rn, int al, |
67 |
|
AMBTREE *at, FVECT c0, double s); |
68 |
< |
static int makeambient(COLOR acol, RAY *r, FVECT rn, int al); |
69 |
< |
static int extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv, |
68 |
> |
static int makeambient(SCOLOR acol, RAY *r, FVECT rn, int al); |
69 |
> |
static int extambient(SCOLOR cr, AMBVAL *ap, FVECT pv, FVECT nv, |
70 |
|
FVECT uvw[3]); |
71 |
|
|
72 |
|
#ifdef F_SETLKW |
230 |
|
|
231 |
|
void |
232 |
|
multambient( /* compute ambient component & multiply by coef. */ |
233 |
< |
COLOR aval, |
233 |
> |
SCOLOR aval, |
234 |
|
RAY *r, |
235 |
|
FVECT nrm |
236 |
|
) |
237 |
|
{ |
238 |
|
static double logAvgAbsorp = 1; |
239 |
|
static int rdepth = 0; /* ambient recursion */ |
240 |
< |
COLOR acol, caustic; |
240 |
> |
SCOLOR acol, caustic; |
241 |
|
int i, ok; |
242 |
|
double d, l; |
243 |
|
|
253 |
|
/* PMAP: Factor in specular-diffuse ambient (caustics) from photon |
254 |
|
* map, if enabled and ray is primary, else caustic is zero. Continue |
255 |
|
* with RADIANCE ambient calculation */ |
256 |
< |
copycolor(caustic, aval); |
257 |
< |
ambPmapCaustic(caustic, r, rdepth); |
258 |
< |
|
256 |
> |
{/* XXX TEMPORARY */ |
257 |
> |
COLOR pmc; |
258 |
> |
scolor_color(pmc, aval); |
259 |
> |
ambPmapCaustic(pmc, r, rdepth); |
260 |
> |
setscolor(caustic, colval(pmc,RED), colval(pmc,GRN), colval(pmc,BLU)); |
261 |
> |
} |
262 |
|
if (ambdiv <= 0) /* no ambient calculation */ |
263 |
|
goto dumbamb; |
264 |
|
/* check number of bounces */ |
269 |
|
ambincl != inset(ambset, r->ro->omod)) |
270 |
|
goto dumbamb; |
271 |
|
|
272 |
< |
if (ambacc <= FTINY) { /* no ambient storage */ |
273 |
< |
FVECT uvd[2]; |
272 |
> |
if (ambacc <= FTINY) { /* no ambient storage? */ |
273 |
> |
double rdot = DOT(nrm,r->ron); |
274 |
> |
int sgn = 1 - 2*(rdot < 0); |
275 |
|
float dgrad[2], *dgp = NULL; |
276 |
+ |
FVECT uvd[2]; |
277 |
|
|
278 |
< |
if (nrm != r->ron && DOT(nrm,r->ron) < 0.9999) |
278 |
> |
if (sgn*rdot < 0.9999) |
279 |
|
dgp = dgrad; /* compute rotational grad. */ |
280 |
< |
copycolor(acol, aval); |
280 |
> |
copyscolor(acol, aval); |
281 |
|
rdepth++; |
282 |
< |
ok = doambient(acol, r, r->rweight, |
282 |
> |
ok = doambient(acol, r, r->rweight*sgn, |
283 |
|
uvd, NULL, NULL, dgp, NULL); |
284 |
|
rdepth--; |
285 |
|
if (!ok) |
289 |
|
VCROSS(v1, r->ron, nrm); |
290 |
|
d = 1.0; |
291 |
|
for (i = 3; i--; ) |
292 |
< |
d += v1[i] * (dgp[0]*uvd[0][i] + dgp[1]*uvd[1][i]); |
292 |
> |
d += sgn*v1[i] * (dgp[0]*uvd[0][i] + dgp[1]*uvd[1][i]); |
293 |
|
if (d >= 0.05) |
294 |
< |
scalecolor(acol, d); |
294 |
> |
scalescolor(acol, d); |
295 |
|
} |
296 |
< |
copycolor(aval, acol); |
296 |
> |
copyscolor(aval, acol); |
297 |
|
|
298 |
|
/* PMAP: add in caustic */ |
299 |
< |
addcolor(aval, caustic); |
299 |
> |
saddscolor(aval, caustic); |
300 |
|
return; |
301 |
|
} |
302 |
|
/* interpolate ambient value */ |
303 |
< |
setcolor(acol, 0.0, 0.0, 0.0); |
303 |
> |
scolorblack(acol); |
304 |
|
d = sumambient(acol, r, nrm, rdepth, |
305 |
|
&atrunk, thescene.cuorg, thescene.cusize); |
306 |
|
|
307 |
|
if (d > FTINY) { |
308 |
< |
d = 1.0/d; |
309 |
< |
scalecolor(acol, d); |
304 |
< |
multcolor(aval, acol); |
308 |
> |
scalescolor(acol, 1.0/d); |
309 |
> |
smultscolor(aval, acol); |
310 |
|
|
311 |
|
/* PMAP: add in caustic */ |
312 |
< |
addcolor(aval, caustic); |
312 |
> |
saddscolor(aval, caustic); |
313 |
|
return; |
314 |
|
} |
315 |
|
|
318 |
|
rdepth--; |
319 |
|
|
320 |
|
if (ok) { |
321 |
< |
multcolor(aval, acol); /* computed new value */ |
321 |
> |
smultscolor(aval, acol); /* computed new value */ |
322 |
|
|
323 |
|
/* PMAP: add in caustic */ |
324 |
< |
addcolor(aval, caustic); |
324 |
> |
saddscolor(aval, caustic); |
325 |
|
return; |
326 |
|
} |
327 |
|
|
328 |
|
dumbamb: /* return global value */ |
329 |
|
if ((ambvwt <= 0) | (navsum == 0)) { |
330 |
< |
multcolor(aval, ambval); |
330 |
> |
smultcolor(aval, ambval); |
331 |
|
|
332 |
|
/* PMAP: add in caustic */ |
333 |
< |
addcolor(aval, caustic); |
333 |
> |
saddscolor(aval, caustic); |
334 |
|
return; |
335 |
|
} |
336 |
|
|
339 |
|
d = (log(l)*(double)ambvwt + avsum + logAvgAbsorp*navsum) / |
340 |
|
(double)(ambvwt + navsum); |
341 |
|
d = exp(d) / l; |
342 |
< |
scalecolor(aval, d); |
343 |
< |
multcolor(aval, ambval); /* apply color of ambval */ |
342 |
> |
scalescolor(aval, d); |
343 |
> |
smultcolor(aval, ambval); /* apply color of ambval */ |
344 |
|
} else { |
345 |
|
d = exp( avsum/(double)navsum + logAvgAbsorp ); |
346 |
< |
scalecolor(aval, d); /* neutral color */ |
346 |
> |
scalescolor(aval, d); /* neutral color */ |
347 |
|
} |
348 |
|
} |
349 |
|
|
382 |
|
rtst.rmax = normalize(rtst.rdir); /* short ray test */ |
383 |
|
while (localhit(&rtst, &thescene)) { /* check for occluder */ |
384 |
|
OBJREC *m = findmaterial(rtst.ro); |
385 |
< |
if (m != NULL && !istransp(m->otype) && !isBSDFproxy(m) && |
385 |
> |
if (m != NULL && !istransp(m) && !isBSDFproxy(m) && |
386 |
|
(rtst.clipset == NULL || |
387 |
|
!inset(rtst.clipset, rtst.ro->omod))) |
388 |
|
return(1); /* plug light leak */ |
396 |
|
|
397 |
|
static double |
398 |
|
sumambient( /* get interpolated ambient value */ |
399 |
< |
COLOR acol, |
399 |
> |
SCOLOR acol, |
400 |
|
RAY *r, |
401 |
|
FVECT rn, |
402 |
|
int al, |
406 |
|
) |
407 |
|
{ /* initial limit is 10 degrees plus ambacc radians */ |
408 |
|
const double minangle = 10.0 * PI/180.; |
409 |
+ |
const int sgn = 1 - 2*(DOT(r->ron,rn) < 0); |
410 |
|
double maxangle = minangle + ambacc; |
411 |
|
double wsum = 0.0; |
412 |
|
FVECT ck0; |
430 |
|
at->kid+i, ck0, s); |
431 |
|
} |
432 |
|
/* good enough? */ |
433 |
< |
if (wsum >= 0.05 && s > minarad*10.0) |
433 |
> |
if ((wsum >= 0.05) & (s*ambacc > minarad)) |
434 |
|
return(wsum); |
435 |
|
} |
436 |
|
/* adjust maximum angle */ |
439 |
|
/* sum this node */ |
440 |
|
for (av = at->alist; av != NULL; av = av->next) { |
441 |
|
double u, v, d, delta_r2, delta_t2; |
442 |
< |
COLOR ct; |
442 |
> |
SCOLOR sct; |
443 |
|
FVECT uvw[3]; |
444 |
|
/* |
445 |
|
* Ambient level test |
451 |
|
* Direction test using unperturbed normal |
452 |
|
*/ |
453 |
|
decodedir(uvw[2], av->ndir); |
454 |
< |
d = DOT(uvw[2], r->ron); |
454 |
> |
d = sgn * DOT(uvw[2], r->ron); |
455 |
|
if (d <= 0.0) /* >= 90 degrees */ |
456 |
|
continue; |
457 |
|
delta_r2 = 2.0 - 2.0*d; /* approx. radians^2 */ |
487 |
|
/* |
488 |
|
* Extrapolate value and compute final weight (hat function) |
489 |
|
*/ |
490 |
< |
if (!extambient(ct, av, r->rop, rn, uvw)) |
490 |
> |
if (!extambient(sct, av, r->rop, rn, uvw)) |
491 |
|
continue; |
492 |
|
d = tfunc(maxangle, sqrt(delta_r2), 0.0) * |
493 |
|
tfunc(ambacc, sqrt(delta_t2), 0.0); |
494 |
< |
scalecolor(ct, d); |
495 |
< |
addcolor(acol, ct); |
494 |
> |
scalescolor(sct, d); |
495 |
> |
saddscolor(acol, sct); |
496 |
|
wsum += d; |
497 |
|
} |
498 |
|
return(wsum); |
501 |
|
|
502 |
|
static int |
503 |
|
makeambient( /* make a new ambient value for storage */ |
504 |
< |
COLOR acol, |
504 |
> |
SCOLOR acol, |
505 |
|
RAY *r, |
506 |
|
FVECT rn, |
507 |
|
int al |
508 |
|
) |
509 |
|
{ |
510 |
+ |
int sgn = 1 - 2*(DOT(r->ron,rn) < 0); |
511 |
|
AMBVAL amb; |
512 |
|
FVECT uvw[3]; |
513 |
|
int i; |
517 |
|
amb.weight *= AVGREFL; |
518 |
|
if (r->rweight < 0.1*amb.weight) /* heuristic override */ |
519 |
|
amb.weight = 1.25*r->rweight; |
520 |
< |
setcolor(acol, AVGREFL, AVGREFL, AVGREFL); |
520 |
> |
setscolor(acol, AVGREFL, AVGREFL, AVGREFL); |
521 |
|
/* compute ambient */ |
522 |
< |
i = doambient(acol, r, amb.weight, |
522 |
> |
i = doambient(acol, r, amb.weight*sgn, |
523 |
|
uvw, amb.rad, amb.gpos, amb.gdir, &amb.corral); |
524 |
< |
scalecolor(acol, 1./AVGREFL); /* undo assumed reflectance */ |
524 |
> |
scalescolor(acol, 1./AVGREFL); /* undo assumed reflectance */ |
525 |
|
if (i <= 0 || amb.rad[0] <= FTINY) /* no Hessian or zero radius */ |
526 |
|
return(i); |
527 |
+ |
uvw[2][0] = sgn*r->ron[0]; /* orient unperturbed normal */ |
528 |
+ |
uvw[2][1] = sgn*r->ron[1]; |
529 |
+ |
uvw[2][2] = sgn*r->ron[2]; |
530 |
|
/* store value */ |
531 |
|
VCOPY(amb.pos, r->rop); |
532 |
< |
amb.ndir = encodedir(r->ron); |
532 |
> |
amb.ndir = encodedir(uvw[2]); |
533 |
|
amb.udir = encodedir(uvw[0]); |
534 |
|
amb.lvl = al; |
535 |
< |
copycolor(amb.val, acol); |
536 |
< |
/* insert into tree */ |
537 |
< |
avsave(&amb); /* and save to file */ |
528 |
< |
if (rn != r->ron) { /* texture */ |
529 |
< |
VCOPY(uvw[2], r->ron); |
535 |
> |
copyscolor(amb.val, acol); |
536 |
> |
avsave(&amb); /* insert and save to file */ |
537 |
> |
if (DOT(uvw[2],rn) < 0.9999) /* texture? */ |
538 |
|
extambient(acol, &amb, r->rop, rn, uvw); |
531 |
– |
} |
539 |
|
return(1); |
540 |
|
} |
541 |
|
|
542 |
|
|
543 |
|
static int |
544 |
|
extambient( /* extrapolate value at pv, nv */ |
545 |
< |
COLOR cr, |
545 |
> |
SCOLOR scr, |
546 |
|
AMBVAL *ap, |
547 |
|
FVECT pv, |
548 |
|
FVECT nv, |
574 |
|
d = min_d; |
575 |
|
else if (d > max_d) |
576 |
|
d = max_d; |
577 |
< |
copycolor(cr, ap->val); |
578 |
< |
scalecolor(cr, d); |
577 |
> |
copyscolor(scr, ap->val); |
578 |
> |
scalescolor(scr, d); |
579 |
|
return(d > min_d); |
580 |
|
} |
581 |
|
|
630 |
|
{ |
631 |
|
extern char *progname, *octname; |
632 |
|
static char *mybuf = NULL; |
633 |
+ |
int ntries = 3; |
634 |
|
|
635 |
|
#ifdef F_SETLKW |
636 |
|
aflock(cre8 ? F_WRLCK : F_RDLCK); |
639 |
|
if (mybuf == NULL) |
640 |
|
mybuf = (char *)bmalloc(BUFSIZ+8); |
641 |
|
setbuf(ambfp, mybuf); |
642 |
+ |
retry: |
643 |
|
if (cre8) { /* new file */ |
644 |
|
newheader("RADIANCE", ambfp); |
645 |
|
fprintf(ambfp, "%s -av %g %g %g -aw %d -ab %d -aa %g ", |
652 |
|
srcsizerat, shadthresh, shadcert); |
653 |
|
fprintf(ambfp, "-ss %g -st %g -lr %d -lw %g ", specjitter, |
654 |
|
specthresh, maxdepth, minweight); |
655 |
+ |
fprintf(ambfp, "-cw %g %g -cs %d ", WLPART[3], WLPART[0], NCSAMP); |
656 |
|
if (octname != NULL) |
657 |
|
fputs(octname, ambfp); |
658 |
< |
fputc('\n', ambfp); |
658 |
> |
fputc('\n', ambfp); /* end of command line, not header! */ |
659 |
|
fprintf(ambfp, "SOFTWARE= %s\n", VersionID); |
660 |
|
fputnow(ambfp); |
661 |
+ |
AMB_CNDX = CNDX; /* use current spectral sampling */ |
662 |
+ |
AMB_WLPART = WLPART; |
663 |
+ |
fputwlsplit(WLPART, ambfp); |
664 |
+ |
fputncomp(NCSAMP, ambfp); |
665 |
|
fputformat(AMBFMT, ambfp); |
666 |
|
fputc('\n', ambfp); |
667 |
|
putambmagic(ambfp); |
668 |
< |
} else if (checkheader(ambfp, AMBFMT, NULL) < 0 || !hasambmagic(ambfp)) |
669 |
< |
error(USER, "bad ambient file"); |
668 |
> |
} else if (getheader(ambfp, amb_headline, NULL) < 0 || !hasambmagic(ambfp)) { |
669 |
> |
if (--ntries > 0 && ftell(ambfp) == 0) { |
670 |
> |
#ifdef F_SETLKW |
671 |
> |
aflock(F_UNLCK); |
672 |
> |
clearerr(ambfp); |
673 |
> |
sleep(2); |
674 |
> |
aflock(F_RDLCK); |
675 |
> |
#else |
676 |
> |
clearerr(ambfp); |
677 |
> |
sleep(2); |
678 |
> |
#endif |
679 |
> |
goto retry; |
680 |
> |
} |
681 |
> |
error(USER, "bad/incompatible ambient file"); |
682 |
> |
} |
683 |
> |
if ((AMB_CNDX != CNDX) | (AMB_WLPART != WLPART)) { |
684 |
> |
if (setspectrsamp(AMB_CNDX, AMB_WLPART) < 0) |
685 |
> |
error(USER, "bad wavelength sampling in ambient file"); |
686 |
> |
if (AMB_CNDX[3] == CNDX[3] && FABSEQ(AMB_WLPART[0],WLPART[0]) && |
687 |
> |
FABSEQ(AMB_WLPART[3],WLPART[3])) { |
688 |
> |
AMB_CNDX = CNDX; |
689 |
> |
AMB_WLPART = WLPART; /* just the same */ |
690 |
> |
} else |
691 |
> |
error(WARNING, "different ambient file wavelength sampling"); |
692 |
> |
} |
693 |
|
} |
694 |
|
|
695 |
|
|
722 |
|
|
723 |
|
if ((av = newambval()) == NULL) |
724 |
|
error(SYSTEM, "out of memory in avstore"); |
725 |
< |
*av = *aval; |
725 |
> |
memcpy(av, aval, AVSIZE); /* AVSIZE <= sizeof(AMBVAL) */ |
726 |
|
av->next = NULL; |
727 |
|
nambvals++; |
728 |
< |
d = bright(av->val); |
728 |
> |
d = pbright(av->val); |
729 |
|
if (d > FTINY) { /* add to log sum for averaging */ |
730 |
|
avsum += log(d); |
731 |
|
navsum++; |