25 |
|
extern char *shm_boundary; /* memory sharing boundary */ |
26 |
|
|
27 |
|
#ifndef MAXASET |
28 |
< |
#define MAXASET 2047 /* maximum number of elements in ambient set */ |
28 |
> |
#define MAXASET 4095 /* maximum number of elements in ambient set */ |
29 |
|
#endif |
30 |
|
OBJECT ambset[MAXASET+1]={0}; /* ambient include/exclude set */ |
31 |
|
|
39 |
|
|
40 |
|
#ifndef SORT_THRESH |
41 |
|
#ifdef SMLMEM |
42 |
< |
#define SORT_THRESH ((3L<<20)/sizeof(AMBVAL)) |
42 |
> |
#define SORT_THRESH ((16L<<20)/sizeof(AMBVAL)) |
43 |
|
#else |
44 |
< |
#define SORT_THRESH ((9L<<20)/sizeof(AMBVAL)) |
44 |
> |
#define SORT_THRESH ((64L<<20)/sizeof(AMBVAL)) |
45 |
|
#endif |
46 |
|
#endif |
47 |
|
#ifndef SORT_INTVL |
51 |
|
#define MAX_SORT_INTVL (SORT_INTVL<<6) |
52 |
|
#endif |
53 |
|
|
54 |
+ |
|
55 |
+ |
static double qambacc = 0.; /* ambient accuracy to the 1/4 power */ |
56 |
|
static double avsum = 0.; /* computed ambient value sum (log) */ |
57 |
|
static unsigned int navsum = 0; /* number of values in avsum */ |
58 |
|
static unsigned int nambvals = 0; /* total number of indirect values */ |
86 |
|
static AMBTREE *newambtree(void); |
87 |
|
static void freeambtree(AMBTREE *atp); |
88 |
|
|
89 |
< |
typedef void unloadtf_t(void *); |
89 |
> |
typedef void unloadtf_t(AMBVAL *); |
90 |
|
static unloadtf_t avinsert; |
91 |
|
static unloadtf_t av2list; |
92 |
+ |
static unloadtf_t avfree; |
93 |
|
static void unloadatree(AMBTREE *at, unloadtf_t *f); |
94 |
|
|
95 |
|
static int aposcmp(const void *avp1, const void *avp2); |
101 |
|
#endif |
102 |
|
|
103 |
|
|
104 |
< |
extern void |
104 |
> |
void |
105 |
|
setambres( /* set ambient resolution */ |
106 |
|
int ar |
107 |
|
) |
124 |
|
} |
125 |
|
|
126 |
|
|
127 |
< |
extern void |
127 |
> |
void |
128 |
|
setambacc( /* set ambient accuracy */ |
129 |
|
double newa |
130 |
|
) |
134 |
|
if (newa < 0.0) |
135 |
|
newa = 0.0; |
136 |
|
ambdiff = fabs(newa - ambacc); |
137 |
< |
if (ambdiff >= .01 && (ambacc = newa) > FTINY && nambvals > 0) |
138 |
< |
sortambvals(1); /* rebuild tree */ |
137 |
> |
if (ambdiff >= .01 && (ambacc = newa) > FTINY) { |
138 |
> |
qambacc = sqrt(sqrt(ambacc)); |
139 |
> |
if (nambvals > 0) |
140 |
> |
sortambvals(1); /* rebuild tree */ |
141 |
> |
} |
142 |
|
} |
143 |
|
|
144 |
|
|
145 |
< |
extern void |
145 |
> |
void |
146 |
|
setambient(void) /* initialize calculation */ |
147 |
|
{ |
148 |
|
int readonly = 0; |
149 |
< |
long pos, flen; |
149 |
> |
long flen; |
150 |
|
AMBVAL amb; |
151 |
|
/* make sure we're fresh */ |
152 |
|
ambdone(); |
153 |
|
/* init ambient limits */ |
154 |
|
setambres(ambres); |
155 |
< |
setambacc(ambacc); |
155 |
> |
qambacc = sqrt(sqrt(ambacc *= (ambacc > FTINY))); |
156 |
|
if (ambfile == NULL || !ambfile[0]) |
157 |
|
return; |
158 |
|
if (ambacc <= FTINY) { |
166 |
|
readonly = (ambfp = fopen(ambfile, "r")) != NULL; |
167 |
|
if (ambfp != NULL) { |
168 |
|
initambfile(0); /* file exists */ |
169 |
< |
pos = ftell(ambfp); |
169 |
> |
lastpos = ftell(ambfp); |
170 |
|
while (readambval(&amb, ambfp)) |
171 |
|
avinsert(avstore(&amb)); |
172 |
|
nambshare = nambvals; /* share loaded values */ |
180 |
|
return; /* avoid ambsync() */ |
181 |
|
} |
182 |
|
/* align file pointer */ |
183 |
< |
pos += (long)nambvals*AMBVALSIZ; |
183 |
> |
lastpos += (long)nambvals*AMBVALSIZ; |
184 |
|
flen = lseek(fileno(ambfp), (off_t)0, SEEK_END); |
185 |
< |
if (flen != pos) { |
185 |
> |
if (flen != lastpos) { |
186 |
|
sprintf(errmsg, |
187 |
|
"ignoring last %ld values in ambient file (corrupted)", |
188 |
< |
(flen - pos)/AMBVALSIZ); |
188 |
> |
(flen - lastpos)/AMBVALSIZ); |
189 |
|
error(WARNING, errmsg); |
190 |
< |
fseek(ambfp, pos, 0); |
190 |
> |
fseek(ambfp, lastpos, SEEK_SET); |
191 |
|
#ifndef _WIN32 /* XXX we need a replacement for that one */ |
192 |
< |
ftruncate(fileno(ambfp), (off_t)pos); |
192 |
> |
ftruncate(fileno(ambfp), (off_t)lastpos); |
193 |
|
#endif |
194 |
|
} |
195 |
|
} else if ((ambfp = fopen(ambfile, "w+")) != NULL) { |
196 |
|
initambfile(1); /* else create new file */ |
197 |
+ |
fflush(ambfp); |
198 |
+ |
lastpos = ftell(ambfp); |
199 |
|
} else { |
200 |
|
sprintf(errmsg, "cannot open ambient file \"%s\"", ambfile); |
201 |
|
error(SYSTEM, errmsg); |
202 |
|
} |
203 |
< |
nunflshed++; /* lie */ |
204 |
< |
ambsync(); |
203 |
> |
#ifdef getc_unlocked |
204 |
> |
flockfile(ambfp); /* application-level lock */ |
205 |
> |
#endif |
206 |
> |
#ifdef F_SETLKW |
207 |
> |
aflock(F_UNLCK); /* release file */ |
208 |
> |
#endif |
209 |
|
} |
210 |
|
|
211 |
|
|
212 |
< |
extern void |
212 |
> |
void |
213 |
|
ambdone(void) /* close ambient file and free memory */ |
214 |
|
{ |
215 |
|
if (ambfp != NULL) { /* close ambient file */ |
223 |
|
lastpos = -1; |
224 |
|
} |
225 |
|
/* free ambient tree */ |
226 |
< |
unloadatree(&atrunk, free); |
226 |
> |
unloadatree(&atrunk, &avfree); |
227 |
|
/* reset state variables */ |
228 |
|
avsum = 0.; |
229 |
|
navsum = 0; |
235 |
|
} |
236 |
|
|
237 |
|
|
238 |
< |
extern void |
238 |
> |
void |
239 |
|
ambnotify( /* record new modifier */ |
240 |
|
OBJECT obj |
241 |
|
) |
242 |
|
{ |
243 |
|
static int hitlimit = 0; |
244 |
< |
register OBJREC *o; |
245 |
< |
register char **amblp; |
244 |
> |
OBJREC *o; |
245 |
> |
char **amblp; |
246 |
|
|
247 |
|
if (obj == OVOID) { /* starting over */ |
248 |
|
ambset[0] = 0; |
264 |
|
} |
265 |
|
} |
266 |
|
|
267 |
+ |
/************ THE FOLLOWING ROUTINES DIFFER BETWEEN NEW & OLD ***************/ |
268 |
|
|
269 |
< |
extern void |
269 |
> |
#ifdef NEWAMB |
270 |
> |
|
271 |
> |
#define tfunc(lwr, x, upr) (((x)-(lwr))/((upr)-(lwr))) |
272 |
> |
|
273 |
> |
static double sumambient(COLOR acol, RAY *r, FVECT rn, int al, |
274 |
> |
AMBTREE *at, FVECT c0, double s); |
275 |
> |
static int makeambient(COLOR acol, RAY *r, FVECT rn, int al); |
276 |
> |
static void extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv, |
277 |
> |
FVECT uvw[3]); |
278 |
> |
|
279 |
> |
void |
280 |
|
multambient( /* compute ambient component & multiply by coef. */ |
281 |
|
COLOR aval, |
282 |
< |
register RAY *r, |
282 |
> |
RAY *r, |
283 |
|
FVECT nrm |
284 |
|
) |
285 |
|
{ |
286 |
|
static int rdepth = 0; /* ambient recursion */ |
287 |
|
COLOR acol; |
288 |
+ |
int ok; |
289 |
|
double d, l; |
290 |
|
|
291 |
|
if (ambdiv <= 0) /* no ambient calculation */ |
301 |
|
if (ambacc <= FTINY) { /* no ambient storage */ |
302 |
|
copycolor(acol, aval); |
303 |
|
rdepth++; |
304 |
+ |
ok = doambient(acol, r, r->rweight, NULL, NULL, NULL, NULL); |
305 |
+ |
rdepth--; |
306 |
+ |
if (!ok) |
307 |
+ |
goto dumbamb; |
308 |
+ |
copycolor(aval, acol); |
309 |
+ |
return; |
310 |
+ |
} |
311 |
+ |
|
312 |
+ |
if (tracktime) /* sort to minimize thrashing */ |
313 |
+ |
sortambvals(0); |
314 |
+ |
/* interpolate ambient value */ |
315 |
+ |
setcolor(acol, 0.0, 0.0, 0.0); |
316 |
+ |
d = sumambient(acol, r, nrm, rdepth, |
317 |
+ |
&atrunk, thescene.cuorg, thescene.cusize); |
318 |
+ |
if (d > FTINY) { |
319 |
+ |
d = 1.0/d; |
320 |
+ |
scalecolor(acol, d); |
321 |
+ |
multcolor(aval, acol); |
322 |
+ |
return; |
323 |
+ |
} |
324 |
+ |
rdepth++; /* need to cache new value */ |
325 |
+ |
ok = makeambient(acol, r, nrm, rdepth-1); |
326 |
+ |
rdepth--; |
327 |
+ |
if (ok) { |
328 |
+ |
multcolor(aval, acol); /* computed new value */ |
329 |
+ |
return; |
330 |
+ |
} |
331 |
+ |
dumbamb: /* return global value */ |
332 |
+ |
if ((ambvwt <= 0) | (navsum == 0)) { |
333 |
+ |
multcolor(aval, ambval); |
334 |
+ |
return; |
335 |
+ |
} |
336 |
+ |
l = bright(ambval); /* average in computations */ |
337 |
+ |
if (l > FTINY) { |
338 |
+ |
d = (log(l)*(double)ambvwt + avsum) / |
339 |
+ |
(double)(ambvwt + navsum); |
340 |
+ |
d = exp(d) / l; |
341 |
+ |
scalecolor(aval, d); |
342 |
+ |
multcolor(aval, ambval); /* apply color of ambval */ |
343 |
+ |
} else { |
344 |
+ |
d = exp( avsum / (double)navsum ); |
345 |
+ |
scalecolor(aval, d); /* neutral color */ |
346 |
+ |
} |
347 |
+ |
} |
348 |
+ |
|
349 |
+ |
|
350 |
+ |
double |
351 |
+ |
sumambient( /* get interpolated ambient value */ |
352 |
+ |
COLOR acol, |
353 |
+ |
RAY *r, |
354 |
+ |
FVECT rn, |
355 |
+ |
int al, |
356 |
+ |
AMBTREE *at, |
357 |
+ |
FVECT c0, |
358 |
+ |
double s |
359 |
+ |
) |
360 |
+ |
{ /* initial limit is 5 degrees plus ambacc radians */ |
361 |
+ |
const double minangle = 5.0 * PI/180.; |
362 |
+ |
const double maxangle = (minangle+ambacc-PI/2.)*pow(r->rweight,0.13) |
363 |
+ |
+ PI/2.; |
364 |
+ |
double wsum = 0.0; |
365 |
+ |
FVECT ck0; |
366 |
+ |
int i, j; |
367 |
+ |
AMBVAL *av; |
368 |
+ |
/* sum this node */ |
369 |
+ |
for (av = at->alist; av != NULL; av = av->next) { |
370 |
+ |
double d, delta_r2, delta_t2; |
371 |
+ |
COLOR ct; |
372 |
+ |
FVECT uvw[3]; |
373 |
+ |
/* record access */ |
374 |
+ |
if (tracktime) |
375 |
+ |
av->latick = ambclock; |
376 |
+ |
/* |
377 |
+ |
* Ambient level test |
378 |
+ |
*/ |
379 |
+ |
if (av->lvl > al) /* list sorted, so this works */ |
380 |
+ |
break; |
381 |
+ |
if (av->weight < 0.9*r->rweight) |
382 |
+ |
continue; |
383 |
+ |
/* |
384 |
+ |
* Direction test using unperturbed normal |
385 |
+ |
*/ |
386 |
+ |
decodedir(uvw[2], av->ndir); |
387 |
+ |
d = DOT(uvw[2], r->ron); |
388 |
+ |
if (d <= 0.0) /* >= 90 degrees */ |
389 |
+ |
continue; |
390 |
+ |
delta_r2 = 2.0 - 2.0*d; /* approx. radians^2 */ |
391 |
+ |
if (delta_r2 >= maxangle*maxangle) |
392 |
+ |
continue; |
393 |
+ |
/* |
394 |
+ |
* Elliptical radii test based on Hessian |
395 |
+ |
*/ |
396 |
+ |
decodedir(uvw[0], av->udir); |
397 |
+ |
VCROSS(uvw[1], uvw[2], uvw[0]); |
398 |
+ |
VSUB(ck0, av->pos, r->rop); |
399 |
+ |
d = DOT(ck0, uvw[0]) / av->rad[0]; |
400 |
+ |
delta_t2 = d*d; |
401 |
+ |
d = DOT(ck0, uvw[1]) / av->rad[1]; |
402 |
+ |
delta_t2 += d*d; |
403 |
+ |
if (delta_t2 >= qambacc*qambacc) |
404 |
+ |
continue; |
405 |
+ |
/* |
406 |
+ |
* Intersection behind test |
407 |
+ |
*/ |
408 |
+ |
d = 0.0; |
409 |
+ |
for (j = 0; j < 3; j++) |
410 |
+ |
d += (r->rop[j] - av->pos[j])*(uvw[2][j] + r->ron[j]); |
411 |
+ |
if (d*0.5 < -minarad*qambacc-.001) |
412 |
+ |
continue; |
413 |
+ |
/* |
414 |
+ |
* Extrapolate value and compute final weight (hat function) |
415 |
+ |
*/ |
416 |
+ |
extambient(ct, av, r->rop, rn, uvw); |
417 |
+ |
d = tfunc(maxangle, sqrt(delta_r2), 0.0) * |
418 |
+ |
tfunc(qambacc, sqrt(delta_t2), 0.0); |
419 |
+ |
scalecolor(ct, d); |
420 |
+ |
addcolor(acol, ct); |
421 |
+ |
wsum += d; |
422 |
+ |
} |
423 |
+ |
if (at->kid == NULL) |
424 |
+ |
return(wsum); |
425 |
+ |
/* sum children */ |
426 |
+ |
s *= 0.5; |
427 |
+ |
for (i = 0; i < 8; i++) { |
428 |
+ |
for (j = 0; j < 3; j++) { |
429 |
+ |
ck0[j] = c0[j]; |
430 |
+ |
if (1<<j & i) |
431 |
+ |
ck0[j] += s; |
432 |
+ |
if (r->rop[j] < ck0[j] - OCTSCALE*s) |
433 |
+ |
break; |
434 |
+ |
if (r->rop[j] > ck0[j] + (1.0+OCTSCALE)*s) |
435 |
+ |
break; |
436 |
+ |
} |
437 |
+ |
if (j == 3) |
438 |
+ |
wsum += sumambient(acol, r, rn, al, |
439 |
+ |
at->kid+i, ck0, s); |
440 |
+ |
} |
441 |
+ |
return(wsum); |
442 |
+ |
} |
443 |
+ |
|
444 |
+ |
|
445 |
+ |
int |
446 |
+ |
makeambient( /* make a new ambient value for storage */ |
447 |
+ |
COLOR acol, |
448 |
+ |
RAY *r, |
449 |
+ |
FVECT rn, |
450 |
+ |
int al |
451 |
+ |
) |
452 |
+ |
{ |
453 |
+ |
AMBVAL amb; |
454 |
+ |
FVECT uvw[3]; |
455 |
+ |
int i; |
456 |
+ |
|
457 |
+ |
amb.weight = 1.0; /* compute weight */ |
458 |
+ |
for (i = al; i-- > 0; ) |
459 |
+ |
amb.weight *= AVGREFL; |
460 |
+ |
if (r->rweight < 0.1*amb.weight) /* heuristic override */ |
461 |
+ |
amb.weight = 1.25*r->rweight; |
462 |
+ |
setcolor(acol, AVGREFL, AVGREFL, AVGREFL); |
463 |
+ |
/* compute ambient */ |
464 |
+ |
i = doambient(acol, r, amb.weight, uvw, amb.rad, amb.gpos, amb.gdir); |
465 |
+ |
scalecolor(acol, 1./AVGREFL); /* undo assumed reflectance */ |
466 |
+ |
if (i <= 0 || amb.rad[0] <= FTINY) /* no Hessian or zero radius */ |
467 |
+ |
return(i); |
468 |
+ |
/* store value */ |
469 |
+ |
VCOPY(amb.pos, r->rop); |
470 |
+ |
amb.ndir = encodedir(r->ron); |
471 |
+ |
amb.udir = encodedir(uvw[0]); |
472 |
+ |
amb.lvl = al; |
473 |
+ |
copycolor(amb.val, acol); |
474 |
+ |
/* insert into tree */ |
475 |
+ |
avsave(&amb); /* and save to file */ |
476 |
+ |
if (rn != r->ron) { /* texture */ |
477 |
+ |
VCOPY(uvw[2], r->ron); |
478 |
+ |
extambient(acol, &amb, r->rop, rn, uvw); |
479 |
+ |
} |
480 |
+ |
return(1); |
481 |
+ |
} |
482 |
+ |
|
483 |
+ |
|
484 |
+ |
void |
485 |
+ |
extambient( /* extrapolate value at pv, nv */ |
486 |
+ |
COLOR cr, |
487 |
+ |
AMBVAL *ap, |
488 |
+ |
FVECT pv, |
489 |
+ |
FVECT nv, |
490 |
+ |
FVECT uvw[3] |
491 |
+ |
) |
492 |
+ |
{ |
493 |
+ |
static FVECT my_uvw[3]; |
494 |
+ |
FVECT v1; |
495 |
+ |
int i; |
496 |
+ |
double d = 1.0; /* zeroeth order */ |
497 |
+ |
|
498 |
+ |
if (uvw == NULL) { /* need local coordinates? */ |
499 |
+ |
decodedir(my_uvw[2], ap->ndir); |
500 |
+ |
decodedir(my_uvw[0], ap->udir); |
501 |
+ |
VCROSS(my_uvw[1], my_uvw[2], my_uvw[0]); |
502 |
+ |
uvw = my_uvw; |
503 |
+ |
} |
504 |
+ |
for (i = 3; i--; ) /* gradient due to translation */ |
505 |
+ |
d += (pv[i] - ap->pos[i]) * |
506 |
+ |
(ap->gpos[0]*uvw[0][i] + ap->gpos[1]*uvw[1][i]); |
507 |
+ |
|
508 |
+ |
VCROSS(v1, uvw[2], nv); /* gradient due to rotation */ |
509 |
+ |
for (i = 3; i--; ) |
510 |
+ |
d += v1[i] * (ap->gdir[0]*uvw[0][i] + ap->gdir[1]*uvw[1][i]); |
511 |
+ |
|
512 |
+ |
if (d <= 0.0) { |
513 |
+ |
setcolor(cr, 0.0, 0.0, 0.0); |
514 |
+ |
return; |
515 |
+ |
} |
516 |
+ |
copycolor(cr, ap->val); |
517 |
+ |
scalecolor(cr, d); |
518 |
+ |
} |
519 |
+ |
|
520 |
+ |
|
521 |
+ |
static void |
522 |
+ |
avinsert( /* insert ambient value in our tree */ |
523 |
+ |
AMBVAL *av |
524 |
+ |
) |
525 |
+ |
{ |
526 |
+ |
AMBTREE *at; |
527 |
+ |
AMBVAL *ap; |
528 |
+ |
AMBVAL avh; |
529 |
+ |
FVECT ck0; |
530 |
+ |
double s; |
531 |
+ |
int branch; |
532 |
+ |
int i; |
533 |
+ |
|
534 |
+ |
if (av->rad[0] <= FTINY) |
535 |
+ |
error(CONSISTENCY, "zero ambient radius in avinsert"); |
536 |
+ |
at = &atrunk; |
537 |
+ |
VCOPY(ck0, thescene.cuorg); |
538 |
+ |
s = thescene.cusize; |
539 |
+ |
while (s*(OCTSCALE/2) > av->rad[1]*qambacc) { |
540 |
+ |
if (at->kid == NULL) |
541 |
+ |
if ((at->kid = newambtree()) == NULL) |
542 |
+ |
error(SYSTEM, "out of memory in avinsert"); |
543 |
+ |
s *= 0.5; |
544 |
+ |
branch = 0; |
545 |
+ |
for (i = 0; i < 3; i++) |
546 |
+ |
if (av->pos[i] > ck0[i] + s) { |
547 |
+ |
ck0[i] += s; |
548 |
+ |
branch |= 1 << i; |
549 |
+ |
} |
550 |
+ |
at = at->kid + branch; |
551 |
+ |
} |
552 |
+ |
avh.next = at->alist; /* order by increasing level */ |
553 |
+ |
for (ap = &avh; ap->next != NULL; ap = ap->next) |
554 |
+ |
if (ap->next->lvl >= av->lvl) |
555 |
+ |
break; |
556 |
+ |
av->next = ap->next; |
557 |
+ |
ap->next = (AMBVAL*)av; |
558 |
+ |
at->alist = avh.next; |
559 |
+ |
} |
560 |
+ |
|
561 |
+ |
|
562 |
+ |
#else /* ! NEWAMB */ |
563 |
+ |
|
564 |
+ |
static double sumambient(COLOR acol, RAY *r, FVECT rn, int al, |
565 |
+ |
AMBTREE *at, FVECT c0, double s); |
566 |
+ |
static double makeambient(COLOR acol, RAY *r, FVECT rn, int al); |
567 |
+ |
static void extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv); |
568 |
+ |
|
569 |
+ |
|
570 |
+ |
void |
571 |
+ |
multambient( /* compute ambient component & multiply by coef. */ |
572 |
+ |
COLOR aval, |
573 |
+ |
RAY *r, |
574 |
+ |
FVECT nrm |
575 |
+ |
) |
576 |
+ |
{ |
577 |
+ |
static int rdepth = 0; /* ambient recursion */ |
578 |
+ |
COLOR acol; |
579 |
+ |
double d, l; |
580 |
+ |
|
581 |
+ |
if (ambdiv <= 0) /* no ambient calculation */ |
582 |
+ |
goto dumbamb; |
583 |
+ |
/* check number of bounces */ |
584 |
+ |
if (rdepth >= ambounce) |
585 |
+ |
goto dumbamb; |
586 |
+ |
/* check ambient list */ |
587 |
+ |
if (ambincl != -1 && r->ro != NULL && |
588 |
+ |
ambincl != inset(ambset, r->ro->omod)) |
589 |
+ |
goto dumbamb; |
590 |
+ |
|
591 |
+ |
if (ambacc <= FTINY) { /* no ambient storage */ |
592 |
+ |
copycolor(acol, aval); |
593 |
+ |
rdepth++; |
594 |
|
d = doambient(acol, r, r->rweight, NULL, NULL); |
595 |
|
rdepth--; |
596 |
|
if (d <= FTINY) |
637 |
|
} |
638 |
|
|
639 |
|
|
640 |
< |
extern double |
640 |
> |
static double |
641 |
|
sumambient( /* get interpolated ambient value */ |
642 |
|
COLOR acol, |
643 |
< |
register RAY *r, |
643 |
> |
RAY *r, |
644 |
|
FVECT rn, |
645 |
|
int al, |
646 |
|
AMBTREE *at, |
652 |
|
COLOR ct; |
653 |
|
FVECT ck0; |
654 |
|
int i; |
655 |
< |
register int j; |
656 |
< |
register AMBVAL *av; |
655 |
> |
int j; |
656 |
> |
AMBVAL *av; |
657 |
|
|
658 |
|
wsum = 0.0; |
659 |
|
/* do this node */ |
671 |
|
/* |
672 |
|
* Ambient radius test. |
673 |
|
*/ |
674 |
< |
d = av->pos[0] - r->rop[0]; |
675 |
< |
e1 = d * d; |
362 |
< |
d = av->pos[1] - r->rop[1]; |
363 |
< |
e1 += d * d; |
364 |
< |
d = av->pos[2] - r->rop[2]; |
365 |
< |
e1 += d * d; |
366 |
< |
e1 /= av->rad * av->rad; |
674 |
> |
VSUB(ck0, av->pos, r->rop); |
675 |
> |
e1 = DOT(ck0, ck0) / (av->rad * av->rad); |
676 |
|
if (e1 > ambacc*ambacc*1.21) |
677 |
|
continue; |
678 |
|
/* |
689 |
|
} |
690 |
|
} |
691 |
|
e2 = (1.0 - d) * r->rweight; |
692 |
< |
if (e2 < 0.0) e2 = 0.0; |
693 |
< |
if (e1 + e2 > ambacc*ambacc*1.21) |
692 |
> |
if (e2 < 0.0) |
693 |
> |
e2 = 0.0; |
694 |
> |
else if (e1 + e2 > ambacc*ambacc*1.21) |
695 |
|
continue; |
696 |
|
/* |
697 |
|
* Ray behind test. |
748 |
|
} |
749 |
|
|
750 |
|
|
751 |
< |
extern double |
751 |
> |
static double |
752 |
|
makeambient( /* make a new ambient value for storage */ |
753 |
|
COLOR acol, |
754 |
|
RAY *r, |
764 |
|
for (i = al; i-- > 0; ) |
765 |
|
amb.weight *= AVGREFL; |
766 |
|
if (r->rweight < 0.1*amb.weight) /* heuristic override */ |
767 |
< |
amb.weight = r->rweight; |
767 |
> |
amb.weight = 1.25*r->rweight; |
768 |
|
setcolor(acol, AVGREFL, AVGREFL, AVGREFL); |
769 |
|
/* compute ambient */ |
770 |
|
amb.rad = doambient(acol, r, amb.weight, gp, gd); |
788 |
|
} |
789 |
|
|
790 |
|
|
791 |
< |
extern void |
791 |
> |
static void |
792 |
|
extambient( /* extrapolate value at pv, nv */ |
793 |
|
COLOR cr, |
794 |
< |
register AMBVAL *ap, |
794 |
> |
AMBVAL *ap, |
795 |
|
FVECT pv, |
796 |
|
FVECT nv |
797 |
|
) |
798 |
|
{ |
799 |
|
FVECT v1; |
800 |
< |
register int i; |
800 |
> |
int i; |
801 |
|
double d; |
802 |
|
|
803 |
|
d = 1.0; /* zeroeth order */ |
817 |
|
|
818 |
|
|
819 |
|
static void |
820 |
+ |
avinsert( /* insert ambient value in our tree */ |
821 |
+ |
AMBVAL *av |
822 |
+ |
) |
823 |
+ |
{ |
824 |
+ |
AMBTREE *at; |
825 |
+ |
AMBVAL *ap; |
826 |
+ |
AMBVAL avh; |
827 |
+ |
FVECT ck0; |
828 |
+ |
double s; |
829 |
+ |
int branch; |
830 |
+ |
int i; |
831 |
+ |
|
832 |
+ |
if (av->rad <= FTINY) |
833 |
+ |
error(CONSISTENCY, "zero ambient radius in avinsert"); |
834 |
+ |
at = &atrunk; |
835 |
+ |
VCOPY(ck0, thescene.cuorg); |
836 |
+ |
s = thescene.cusize; |
837 |
+ |
while (s*(OCTSCALE/2) > av->rad*ambacc) { |
838 |
+ |
if (at->kid == NULL) |
839 |
+ |
if ((at->kid = newambtree()) == NULL) |
840 |
+ |
error(SYSTEM, "out of memory in avinsert"); |
841 |
+ |
s *= 0.5; |
842 |
+ |
branch = 0; |
843 |
+ |
for (i = 0; i < 3; i++) |
844 |
+ |
if (av->pos[i] > ck0[i] + s) { |
845 |
+ |
ck0[i] += s; |
846 |
+ |
branch |= 1 << i; |
847 |
+ |
} |
848 |
+ |
at = at->kid + branch; |
849 |
+ |
} |
850 |
+ |
avh.next = at->alist; /* order by increasing level */ |
851 |
+ |
for (ap = &avh; ap->next != NULL; ap = ap->next) |
852 |
+ |
if (ap->next->lvl >= av->lvl) |
853 |
+ |
break; |
854 |
+ |
av->next = ap->next; |
855 |
+ |
ap->next = (AMBVAL*)av; |
856 |
+ |
at->alist = avh.next; |
857 |
+ |
} |
858 |
+ |
|
859 |
+ |
#endif /* ! NEWAMB */ |
860 |
+ |
|
861 |
+ |
/************* FOLLOWING ROUTINES SAME FOR NEW & OLD METHODS ***************/ |
862 |
+ |
|
863 |
+ |
static void |
864 |
|
initambfile( /* initialize ambient file */ |
865 |
< |
int creat |
865 |
> |
int cre8 |
866 |
|
) |
867 |
|
{ |
868 |
|
extern char *progname, *octname; |
869 |
|
static char *mybuf = NULL; |
870 |
|
|
871 |
|
#ifdef F_SETLKW |
872 |
< |
aflock(creat ? F_WRLCK : F_RDLCK); |
872 |
> |
aflock(cre8 ? F_WRLCK : F_RDLCK); |
873 |
|
#endif |
874 |
|
SET_FILE_BINARY(ambfp); |
875 |
|
if (mybuf == NULL) |
876 |
|
mybuf = (char *)bmalloc(BUFSIZ+8); |
877 |
|
setbuf(ambfp, mybuf); |
878 |
< |
if (creat) { /* new file */ |
878 |
> |
if (cre8) { /* new file */ |
879 |
|
newheader("RADIANCE", ambfp); |
880 |
|
fprintf(ambfp, "%s -av %g %g %g -aw %d -ab %d -aa %g ", |
881 |
|
progname, colval(ambval,RED), |
884 |
|
fprintf(ambfp, "-ad %d -as %d -ar %d ", |
885 |
|
ambdiv, ambssamp, ambres); |
886 |
|
if (octname != NULL) |
887 |
< |
printargs(1, &octname, ambfp); |
888 |
< |
else |
535 |
< |
fputc('\n', ambfp); |
887 |
> |
fputs(octname, ambfp); |
888 |
> |
fputc('\n', ambfp); |
889 |
|
fprintf(ambfp, "SOFTWARE= %s\n", VersionID); |
890 |
|
fputnow(ambfp); |
891 |
|
fputformat(AMBFMT, ambfp); |
892 |
< |
putc('\n', ambfp); |
892 |
> |
fputc('\n', ambfp); |
893 |
|
putambmagic(ambfp); |
894 |
|
} else if (checkheader(ambfp, AMBFMT, NULL) < 0 || !hasambmagic(ambfp)) |
895 |
|
error(USER, "bad ambient file"); |
917 |
|
|
918 |
|
static AMBVAL * |
919 |
|
avstore( /* allocate memory and store aval */ |
920 |
< |
register AMBVAL *aval |
920 |
> |
AMBVAL *aval |
921 |
|
) |
922 |
|
{ |
923 |
< |
register AMBVAL *av; |
923 |
> |
AMBVAL *av; |
924 |
|
double d; |
925 |
|
|
926 |
|
if ((av = newambval()) == NULL) |
946 |
|
static AMBTREE * |
947 |
|
newambtree(void) /* allocate 8 ambient tree structs */ |
948 |
|
{ |
949 |
< |
register AMBTREE *atp, *upperlim; |
949 |
> |
AMBTREE *atp, *upperlim; |
950 |
|
|
951 |
|
if (atfreelist == NULL) { /* get more nodes */ |
952 |
|
atfreelist = (AMBTREE *)malloc(ATALLOCSZ*8*sizeof(AMBTREE)); |
976 |
|
|
977 |
|
|
978 |
|
static void |
626 |
– |
avinsert( /* insert ambient value in our tree */ |
627 |
– |
void *av |
628 |
– |
) |
629 |
– |
{ |
630 |
– |
register AMBTREE *at; |
631 |
– |
register AMBVAL *ap; |
632 |
– |
AMBVAL avh; |
633 |
– |
FVECT ck0; |
634 |
– |
double s; |
635 |
– |
int branch; |
636 |
– |
register int i; |
637 |
– |
|
638 |
– |
if (((AMBVAL*)av)->rad <= FTINY) |
639 |
– |
error(CONSISTENCY, "zero ambient radius in avinsert"); |
640 |
– |
at = &atrunk; |
641 |
– |
VCOPY(ck0, thescene.cuorg); |
642 |
– |
s = thescene.cusize; |
643 |
– |
while (s*(OCTSCALE/2) > ((AMBVAL*)av)->rad*ambacc) { |
644 |
– |
if (at->kid == NULL) |
645 |
– |
if ((at->kid = newambtree()) == NULL) |
646 |
– |
error(SYSTEM, "out of memory in avinsert"); |
647 |
– |
s *= 0.5; |
648 |
– |
branch = 0; |
649 |
– |
for (i = 0; i < 3; i++) |
650 |
– |
if (((AMBVAL*)av)->pos[i] > ck0[i] + s) { |
651 |
– |
ck0[i] += s; |
652 |
– |
branch |= 1 << i; |
653 |
– |
} |
654 |
– |
at = at->kid + branch; |
655 |
– |
} |
656 |
– |
avh.next = at->alist; /* order by increasing level */ |
657 |
– |
for (ap = &avh; ap->next != NULL; ap = ap->next) |
658 |
– |
if (ap->next->lvl >= ((AMBVAL*)av)->lvl) |
659 |
– |
break; |
660 |
– |
((AMBVAL*)av)->next = ap->next; |
661 |
– |
ap->next = (AMBVAL*)av; |
662 |
– |
at->alist = avh.next; |
663 |
– |
} |
664 |
– |
|
665 |
– |
|
666 |
– |
static void |
979 |
|
unloadatree( /* unload an ambient value tree */ |
980 |
< |
register AMBTREE *at, |
980 |
> |
AMBTREE *at, |
981 |
|
unloadtf_t *f |
982 |
|
) |
983 |
|
{ |
984 |
< |
register AMBVAL *av; |
985 |
< |
register int i; |
984 |
> |
AMBVAL *av; |
985 |
> |
int i; |
986 |
|
/* transfer values at this node */ |
987 |
|
for (av = at->alist; av != NULL; av = at->alist) { |
988 |
|
at->alist = av->next; |
1007 |
|
static int alatcmp(const void *av1, const void *av2); |
1008 |
|
|
1009 |
|
static void |
1010 |
+ |
avfree(AMBVAL *av) |
1011 |
+ |
{ |
1012 |
+ |
free(av); |
1013 |
+ |
} |
1014 |
+ |
|
1015 |
+ |
static void |
1016 |
|
av2list( |
1017 |
< |
void *av |
1017 |
> |
AMBVAL *av |
1018 |
|
) |
1019 |
|
{ |
1020 |
|
#ifdef DEBUG |
1022 |
|
error(CONSISTENCY, "too many ambient values in av2list1"); |
1023 |
|
#endif |
1024 |
|
avlist1[i_avlist].p = avlist2[i_avlist] = (AMBVAL*)av; |
1025 |
< |
avlist1[i_avlist++].t = ((AMBVAL*)av)->latick; |
1025 |
> |
avlist1[i_avlist++].t = av->latick; |
1026 |
|
} |
1027 |
|
|
1028 |
|
|
1032 |
|
const void *av2 |
1033 |
|
) |
1034 |
|
{ |
1035 |
< |
register long lc = ((struct avl *)av2)->t - ((struct avl *)av1)->t; |
1035 |
> |
long lc = ((struct avl *)av2)->t - ((struct avl *)av1)->t; |
1036 |
|
return(lc<0 ? -1 : lc>0 ? 1 : 0); |
1037 |
|
} |
1038 |
|
|
1049 |
|
const void *avp2 |
1050 |
|
) |
1051 |
|
{ |
1052 |
< |
register long diff = *(char * const *)avp1 - *(char * const *)avp2; |
1052 |
> |
long diff = *(char * const *)avp1 - *(char * const *)avp2; |
1053 |
|
if (diff < 0) |
1054 |
|
return(-1); |
1055 |
|
return(diff > 0); |
1056 |
|
} |
1057 |
|
|
1058 |
< |
#if 1 |
1058 |
> |
|
1059 |
|
static int |
1060 |
|
avlmemi( /* find list position from address */ |
1061 |
|
AMBVAL *avaddr |
1062 |
|
) |
1063 |
|
{ |
1064 |
< |
register AMBVAL **avlpp; |
1064 |
> |
AMBVAL **avlpp; |
1065 |
|
|
1066 |
|
avlpp = (AMBVAL **)bsearch((char *)&avaddr, (char *)avlist2, |
1067 |
< |
nambvals, sizeof(AMBVAL *), aposcmp); |
1067 |
> |
nambvals, sizeof(AMBVAL *), &aposcmp); |
1068 |
|
if (avlpp == NULL) |
1069 |
|
error(CONSISTENCY, "address not found in avlmemi"); |
1070 |
|
return(avlpp - avlist2); |
1071 |
|
} |
754 |
– |
#else |
755 |
– |
#define avlmemi(avaddr) ((AMBVAL **)bsearch((char *)&avaddr,(char *)avlist2, \ |
756 |
– |
nambvals,sizeof(AMBVAL *),aposcmp) - avlist2) |
757 |
– |
#endif |
1072 |
|
|
1073 |
|
|
1074 |
|
static void |
1078 |
|
{ |
1079 |
|
AMBTREE oldatrunk; |
1080 |
|
AMBVAL tav, *tap, *pnext; |
1081 |
< |
register int i, j; |
1081 |
> |
int i, j; |
1082 |
|
/* see if it's time yet */ |
1083 |
|
if (!always && (ambclock++ < lastsort+sortintvl || |
1084 |
|
nambvals < SORT_THRESH)) |
1112 |
|
oldatrunk = atrunk; |
1113 |
|
atrunk.alist = NULL; |
1114 |
|
atrunk.kid = NULL; |
1115 |
< |
unloadatree(&oldatrunk, avinsert); |
1115 |
> |
unloadatree(&oldatrunk, &avinsert); |
1116 |
|
} |
1117 |
|
} else { /* sort memory by last access time */ |
1118 |
|
/* |
1129 |
|
eputs(errmsg); |
1130 |
|
#endif |
1131 |
|
i_avlist = 0; |
1132 |
< |
unloadatree(&atrunk, av2list); /* empty current tree */ |
1132 |
> |
unloadatree(&atrunk, &av2list); /* empty current tree */ |
1133 |
|
#ifdef DEBUG |
1134 |
|
if (i_avlist < nambvals) |
1135 |
|
error(CONSISTENCY, "missing ambient values in sortambvals"); |
1136 |
|
#endif |
1137 |
< |
qsort((char *)avlist1, nambvals, sizeof(struct avl), alatcmp); |
1138 |
< |
qsort((char *)avlist2, nambvals, sizeof(AMBVAL *), aposcmp); |
1137 |
> |
qsort((char *)avlist1, nambvals, sizeof(struct avl), &alatcmp); |
1138 |
> |
qsort((char *)avlist2, nambvals, sizeof(AMBVAL *), &aposcmp); |
1139 |
|
for (i = 0; i < nambvals; i++) { |
1140 |
|
if (avlist1[i].p == NULL) |
1141 |
|
continue; |
1178 |
|
{ |
1179 |
|
static struct flock fls; /* static so initialized to zeroes */ |
1180 |
|
|
1181 |
+ |
if (typ == fls.l_type) /* already called? */ |
1182 |
+ |
return; |
1183 |
|
fls.l_type = typ; |
1184 |
|
if (fcntl(fileno(ambfp), F_SETLKW, &fls) < 0) |
1185 |
|
error(SYSTEM, "cannot (un)lock ambient file"); |
1186 |
|
} |
1187 |
|
|
1188 |
|
|
1189 |
< |
extern int |
1189 |
> |
int |
1190 |
|
ambsync(void) /* synchronize ambient file */ |
1191 |
|
{ |
1192 |
|
long flen; |
1193 |
|
AMBVAL avs; |
1194 |
< |
register int n; |
1194 |
> |
int n; |
1195 |
|
|
1196 |
< |
if (nunflshed == 0) |
1196 |
> |
if (ambfp == NULL) /* no ambient file? */ |
1197 |
|
return(0); |
1198 |
< |
if (lastpos < 0) /* initializing (locked in initambfile) */ |
1199 |
< |
goto syncend; |
884 |
< |
/* gain exclusive access */ |
885 |
< |
aflock(F_WRLCK); |
1198 |
> |
/* gain appropriate access */ |
1199 |
> |
aflock(nunflshed ? F_WRLCK : F_RDLCK); |
1200 |
|
/* see if file has grown */ |
1201 |
|
if ((flen = lseek(fileno(ambfp), (off_t)0, SEEK_END)) < 0) |
1202 |
|
goto seekerr; |
1203 |
< |
if ( (n = flen - lastpos) ) { /* file has grown */ |
1203 |
> |
if ((n = flen - lastpos) > 0) { /* file has grown */ |
1204 |
|
if (ambinp == NULL) { /* use duplicate filedes */ |
1205 |
|
ambinp = fdopen(dup(fileno(ambfp)), "r"); |
1206 |
|
if (ambinp == NULL) |
1207 |
|
error(SYSTEM, "fdopen failed in ambsync"); |
1208 |
|
} |
1209 |
< |
if (fseek(ambinp, lastpos, 0) < 0) |
1209 |
> |
if (fseek(ambinp, lastpos, SEEK_SET) < 0) |
1210 |
|
goto seekerr; |
1211 |
|
while (n >= AMBVALSIZ) { /* load contributed values */ |
1212 |
|
if (!readambval(&avs, ambinp)) { |
1219 |
|
avinsert(avstore(&avs)); |
1220 |
|
n -= AMBVALSIZ; |
1221 |
|
} |
1222 |
+ |
lastpos = flen - n; |
1223 |
|
/*** seek always as safety measure |
1224 |
|
if (n) ***/ /* alignment */ |
1225 |
< |
if (lseek(fileno(ambfp), (off_t)(flen-n), SEEK_SET) < 0) |
1225 |
> |
if (lseek(fileno(ambfp), (off_t)lastpos, SEEK_SET) < 0) |
1226 |
|
goto seekerr; |
1227 |
|
} |
913 |
– |
#ifdef DEBUG |
914 |
– |
if (ambfp->_ptr - ambfp->_base != nunflshed*AMBVALSIZ) { |
915 |
– |
sprintf(errmsg, "ambient file buffer at %d rather than %d", |
916 |
– |
ambfp->_ptr - ambfp->_base, |
917 |
– |
nunflshed*AMBVALSIZ); |
918 |
– |
error(CONSISTENCY, errmsg); |
919 |
– |
} |
920 |
– |
#endif |
921 |
– |
syncend: |
1228 |
|
n = fflush(ambfp); /* calls write() at last */ |
1229 |
< |
if ((lastpos = lseek(fileno(ambfp), (off_t)0, SEEK_CUR)) < 0) |
1229 |
> |
if (n != EOF) |
1230 |
> |
lastpos += (long)nunflshed*AMBVALSIZ; |
1231 |
> |
else if ((lastpos = lseek(fileno(ambfp), (off_t)0, SEEK_CUR)) < 0) |
1232 |
|
goto seekerr; |
1233 |
+ |
|
1234 |
|
aflock(F_UNLCK); /* release file */ |
1235 |
|
nunflshed = 0; |
1236 |
|
return(n); |
1239 |
|
return -1; /* pro forma return */ |
1240 |
|
} |
1241 |
|
|
1242 |
< |
#else |
1242 |
> |
#else /* ! F_SETLKW */ |
1243 |
|
|
1244 |
< |
extern int |
1244 |
> |
int |
1245 |
|
ambsync(void) /* flush ambient file */ |
1246 |
|
{ |
1247 |
< |
if (nunflshed == 0) |
1247 |
> |
if (ambfp == NULL) |
1248 |
|
return(0); |
1249 |
|
nunflshed = 0; |
1250 |
|
return(fflush(ambfp)); |
1251 |
|
} |
1252 |
|
|
1253 |
< |
#endif |
1253 |
> |
#endif /* ! F_SETLKW */ |