| 6 |
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* Initialization and calculation routines |
| 7 |
|
*/ |
| 8 |
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|
| 9 |
+ |
#include "copyright.h" |
| 10 |
+ |
|
| 11 |
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#include "rcontrib.h" |
| 10 |
– |
#include "source.h" |
| 12 |
|
#include "otypes.h" |
| 13 |
< |
#include "platform.h" |
| 13 |
> |
#include "source.h" |
| 14 |
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|
| 14 |
– |
char *shm_boundary = NULL; /* boundary of shared memory */ |
| 15 |
– |
|
| 15 |
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CUBE thescene; /* our scene */ |
| 16 |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
| 17 |
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|
| 19 |
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int ndims = 0; /* number of sampling dimensions */ |
| 20 |
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int samplendx = 0; /* index for this sample */ |
| 21 |
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|
| 22 |
< |
static void trace_contrib(RAY *r); /* our trace callback */ |
| 24 |
< |
void (*trace)() = trace_contrib; |
| 22 |
> |
void (*trace)() = NULL; /* trace call (NULL before rcinit) */ |
| 23 |
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|
| 24 |
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int do_irrad = 0; /* compute irradiance? */ |
| 25 |
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|
| 26 |
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int rand_samp = 1; /* pure Monte Carlo sampling? */ |
| 27 |
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|
| 28 |
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double dstrsrc = 0.9; /* square source distribution */ |
| 29 |
< |
double shadthresh = .03; /* shadow threshold */ |
| 29 |
> |
double shadthresh = 0.; /* shadow threshold */ |
| 30 |
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double shadcert = .75; /* shadow certainty */ |
| 31 |
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int directrelay = 3; /* number of source relays */ |
| 32 |
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int vspretest = 512; /* virtual source pretest density */ |
| 38 |
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double seccg = 0.; /* global scattering eccentricity */ |
| 39 |
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double ssampdist = 0.; /* scatter sampling distance */ |
| 40 |
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|
| 41 |
< |
double specthresh = .15; /* specular sampling threshold */ |
| 41 |
> |
double specthresh = .02; /* specular sampling threshold */ |
| 42 |
|
double specjitter = 1.; /* specular sampling jitter */ |
| 43 |
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|
| 44 |
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int backvis = 1; /* back face visibility */ |
| 49 |
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char *ambfile = NULL; /* ambient file name */ |
| 50 |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
| 51 |
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int ambvwt = 0; /* initial weight for ambient value */ |
| 52 |
< |
double ambacc = 0; /* ambient accuracy */ |
| 52 |
> |
double ambacc = 0.; /* ambient accuracy */ |
| 53 |
|
int ambres = 256; /* ambient resolution */ |
| 54 |
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int ambdiv = 350; /* ambient divisions */ |
| 55 |
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int ambssamp = 0; /* ambient super-samples */ |
| 64 |
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RNUMBER lastray = 0; /* last ray number sent */ |
| 65 |
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RNUMBER lastdone = 0; /* last ray output */ |
| 66 |
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|
| 67 |
< |
static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); } |
| 67 |
> |
static void trace_contrib(RAY *r); /* our trace callback */ |
| 68 |
|
|
| 69 |
+ |
static void mcfree(void *p) { epfree((*(MODCONT *)p).binv,1); free(p); } |
| 70 |
+ |
|
| 71 |
|
LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */ |
| 72 |
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|
| 73 |
|
/************************** INITIALIZATION ROUTINES ***********************/ |
| 74 |
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|
| 75 |
< |
char * |
| 75 |
> |
const char * |
| 76 |
|
formstr( /* return format identifier */ |
| 77 |
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int f |
| 78 |
|
) |
| 81 |
|
case 'a': return("ascii"); |
| 82 |
|
case 'f': return("float"); |
| 83 |
|
case 'd': return("double"); |
| 84 |
< |
case 'c': return(COLRFMT); |
| 84 |
> |
case 'c': return(NCSAMP==3 ? COLRFMT : SPECFMT); |
| 85 |
|
} |
| 86 |
|
return("unknown"); |
| 87 |
|
} |
| 89 |
|
|
| 90 |
|
/* Add modifier to our list to track */ |
| 91 |
|
MODCONT * |
| 92 |
< |
addmodifier(char *modn, char *outf, char *binv, int bincnt) |
| 92 |
> |
addmodifier(char *modn, char *outf, char *prms, char *binv, int bincnt) |
| 93 |
|
{ |
| 94 |
< |
LUENT *lep = lu_find(&modconttab,modn); |
| 95 |
< |
MODCONT *mp; |
| 96 |
< |
EPNODE *ebinv; |
| 97 |
< |
int i; |
| 98 |
< |
|
| 94 |
> |
static int lastNCS = 0; |
| 95 |
> |
LUENT *lep = lu_find(&modconttab,modn); |
| 96 |
> |
MODCONT *mp; |
| 97 |
> |
EPNODE *ebinv; |
| 98 |
> |
int i; |
| 99 |
> |
|
| 100 |
> |
if (!lastNCS) |
| 101 |
> |
lastNCS = NCSAMP; |
| 102 |
> |
else if (NCSAMP != lastNCS) |
| 103 |
> |
error(INTERNAL, |
| 104 |
> |
"number of spectral samples must be set before first modifier"); |
| 105 |
|
if (lep->data != NULL) { |
| 106 |
|
sprintf(errmsg, "duplicate modifier '%s'", modn); |
| 107 |
|
error(USER, errmsg); |
| 108 |
|
} |
| 109 |
< |
if (nmods >= MAXMODLIST) |
| 110 |
< |
error(INTERNAL, "too many modifiers"); |
| 109 |
> |
if (!strcmp(modn, VOIDID)) { |
| 110 |
> |
sprintf(errmsg, "cannot track '%s' modifier", VOIDID); |
| 111 |
> |
error(USER, errmsg); |
| 112 |
> |
} |
| 113 |
> |
if (nmods >= modasiz) { /* need bigger modifier array */ |
| 114 |
> |
modasiz += modasiz/2 + 64; |
| 115 |
> |
if (modname == NULL) |
| 116 |
> |
modname = (char **)malloc(modasiz*sizeof(char *)); |
| 117 |
> |
else |
| 118 |
> |
modname = (char **)realloc(modname, modasiz*sizeof(char *)); |
| 119 |
> |
if (modname == NULL) |
| 120 |
> |
error(SYSTEM, "out of memory in addmodifier()"); |
| 121 |
> |
} |
| 122 |
|
modname[nmods++] = modn; /* XXX assumes static string */ |
| 123 |
|
lep->key = modn; /* XXX assumes static string */ |
| 124 |
|
if (binv == NULL) |
| 138 |
|
error(USER, errmsg); |
| 139 |
|
} |
| 140 |
|
/* initialize results holder */ |
| 141 |
< |
mp = (MODCONT *)malloc(sizeof(MODCONT)+sizeof(DCOLOR)*(bincnt-1)); |
| 141 |
> |
mp = (MODCONT *)malloc(mcsize(bincnt)); |
| 142 |
|
if (mp == NULL) |
| 143 |
|
error(SYSTEM, "out of memory in addmodifier"); |
| 144 |
|
mp->outspec = outf; /* XXX assumes static string */ |
| 145 |
|
mp->modname = modn; /* XXX assumes static string */ |
| 146 |
+ |
mp->params = prms; /* XXX assumes static string */ |
| 147 |
|
mp->binv = ebinv; |
| 148 |
+ |
mp->bin0 = 0; |
| 149 |
|
mp->nbins = bincnt; |
| 150 |
< |
memset(mp->cbin, 0, sizeof(DCOLOR)*bincnt); |
| 151 |
< |
/* allocate output streams */ |
| 152 |
< |
for (i = bincnt; i-- > 0; ) |
| 153 |
< |
getostream(mp->outspec, mp->modname, i, 1); |
| 150 |
> |
memset(mp->cbin, 0, DCOLORSIZ*bincnt); |
| 151 |
> |
/* figure out starting bin */ |
| 152 |
> |
while (!getostream(mp->outspec, mp->modname, mp->bin0, 1)) |
| 153 |
> |
mp->bin0++; |
| 154 |
> |
/* allocate other output streams */ |
| 155 |
> |
for (i = 0; ++i < mp->nbins; ) |
| 156 |
> |
getostream(mp->outspec, mp->modname, mp->bin0+i, 1); |
| 157 |
|
lep->data = (char *)mp; |
| 158 |
|
return(mp); |
| 159 |
|
} |
| 161 |
|
|
| 162 |
|
/* Add modifiers from a file list */ |
| 163 |
|
void |
| 164 |
< |
addmodfile(char *fname, char *outf, char *binv, int bincnt) |
| 164 |
> |
addmodfile(char *fname, char *outf, char *prms, char *binv, int bincnt) |
| 165 |
|
{ |
| 166 |
< |
char *mname[MAXMODLIST]; |
| 167 |
< |
int i; |
| 168 |
< |
/* find the file & store strings */ |
| 169 |
< |
if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) { |
| 170 |
< |
sprintf(errmsg, "cannot find modifier file '%s'", fname); |
| 166 |
> |
char *path = getpath(fname, getrlibpath(), R_OK); |
| 167 |
> |
char mod[MAXSTR]; |
| 168 |
> |
FILE *fp; |
| 169 |
> |
|
| 170 |
> |
if (path == NULL || (fp = fopen(path, "r")) == NULL) { |
| 171 |
> |
if (path == NULL) |
| 172 |
> |
sprintf(errmsg, "cannot find modifier file '%s'", fname); |
| 173 |
> |
else |
| 174 |
> |
sprintf(errmsg, "cannot load modifier file '%s'", path); |
| 175 |
|
error(SYSTEM, errmsg); |
| 176 |
|
} |
| 177 |
< |
for (i = 0; mname[i]; i++) /* add each one */ |
| 178 |
< |
addmodifier(mname[i], outf, binv, bincnt); |
| 177 |
> |
while (fgetword(mod, sizeof(mod), fp) != NULL) |
| 178 |
> |
addmodifier(savqstr(mod), outf, prms, binv, bincnt); |
| 179 |
> |
fclose(fp); |
| 180 |
|
} |
| 181 |
|
|
| 182 |
|
|
| 183 |
+ |
/* Check if we have any more rays left (and report progress) */ |
| 184 |
+ |
int |
| 185 |
+ |
morays(void) |
| 186 |
+ |
{ |
| 187 |
+ |
static RNUMBER total_rays; |
| 188 |
+ |
static time_t tstart, last_report; |
| 189 |
+ |
time_t tnow; |
| 190 |
+ |
|
| 191 |
+ |
if (!raysleft) |
| 192 |
+ |
return(1); /* unknown total, so nothing to do or say */ |
| 193 |
+ |
|
| 194 |
+ |
if (report_intvl > 0 && (tnow = time(0)) >= last_report+report_intvl) { |
| 195 |
+ |
if (!total_rays) { |
| 196 |
+ |
total_rays = raysleft; |
| 197 |
+ |
tstart = tnow; |
| 198 |
+ |
} else { |
| 199 |
+ |
sprintf(errmsg, "%.2f%% done after %.3f hours\n", |
| 200 |
+ |
100.-100.*raysleft/total_rays, |
| 201 |
+ |
(1./3600.)*(tnow - tstart)); |
| 202 |
+ |
eputs(errmsg); |
| 203 |
+ |
} |
| 204 |
+ |
last_report = tnow; |
| 205 |
+ |
} |
| 206 |
+ |
return(--raysleft); |
| 207 |
+ |
} |
| 208 |
+ |
|
| 209 |
+ |
|
| 210 |
+ |
/* Quit program */ |
| 211 |
|
void |
| 212 |
< |
quit( /* quit program */ |
| 212 |
> |
quit( |
| 213 |
|
int code |
| 214 |
|
) |
| 215 |
|
{ |
| 216 |
|
if (nchild > 0) /* close children if any */ |
| 217 |
|
end_children(code != 0); |
| 218 |
+ |
else if (nchild < 0) |
| 219 |
+ |
_exit(code); /* avoid flush() in child */ |
| 220 |
|
exit(code); |
| 221 |
|
} |
| 222 |
|
|
| 223 |
|
|
| 224 |
|
/* Initialize our process(es) */ |
| 225 |
|
static void |
| 226 |
< |
rcinit() |
| 226 |
> |
rcinit(void) |
| 227 |
|
{ |
| 228 |
|
int i; |
| 229 |
|
|
| 230 |
|
if (nproc > MAXPROCESS) |
| 231 |
|
sprintf(errmsg, "too many processes requested -- reducing to %d", |
| 232 |
|
nproc = MAXPROCESS); |
| 233 |
< |
if (nproc > 1) { |
| 234 |
< |
preload_objs(); /* preload auxiliary data */ |
| 235 |
< |
/* set shared memory boundary */ |
| 236 |
< |
shm_boundary = strcpy((char *)malloc(16), "SHM_BOUNDARY"); |
| 237 |
< |
} |
| 233 |
> |
if (nproc > 1) |
| 234 |
> |
cow_memshare(); /* preload auxiliary data */ |
| 235 |
> |
trace = trace_contrib; /* set up trace call-back */ |
| 236 |
> |
for (i = 0; i < nsources; i++) /* tracing to sources as well */ |
| 237 |
> |
source[i].sflags |= SFOLLOW; |
| 238 |
|
if (yres > 0) { /* set up flushing & ray counts */ |
| 239 |
|
if (xres > 0) |
| 240 |
|
raysleft = (RNUMBER)xres*yres; |
| 245 |
|
if ((account = accumulate) > 1) |
| 246 |
|
raysleft *= accumulate; |
| 247 |
|
waitflush = (yres > 0) & (xres > 1) ? 0 : xres; |
| 191 |
– |
/* tracing to sources as well */ |
| 192 |
– |
for (i = 0; i < nsources; i++) |
| 193 |
– |
source[i].sflags |= SFOLLOW; |
| 248 |
|
|
| 249 |
|
if (nproc > 1 && in_rchild()) /* forked child? */ |
| 250 |
|
return; /* return to main processing loop */ |
| 272 |
|
trace_contrib(RAY *r) |
| 273 |
|
{ |
| 274 |
|
MODCONT *mp; |
| 275 |
+ |
double bval; |
| 276 |
|
int bn; |
| 277 |
< |
RREAL contr[3]; |
| 277 |
> |
SCOLOR contr; |
| 278 |
> |
DCOLORV *dvp; |
| 279 |
> |
int i; |
| 280 |
|
|
| 281 |
|
if (r->ro == NULL || r->ro->omod == OVOID) |
| 282 |
|
return; |
| 283 |
+ |
/* shadow ray not on source? */ |
| 284 |
+ |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
| 285 |
+ |
return; |
| 286 |
|
|
| 287 |
|
mp = (MODCONT *)lu_find(&modconttab,objptr(r->ro->omod)->oname)->data; |
| 288 |
|
|
| 289 |
|
if (mp == NULL) /* not in our list? */ |
| 290 |
|
return; |
| 291 |
|
|
| 292 |
< |
worldfunc(RCCONTEXT, r); /* get bin number */ |
| 293 |
< |
bn = (int)(evalue(mp->binv) + .5); |
| 294 |
< |
if ((bn < 0) | (bn >= mp->nbins)) { |
| 295 |
< |
error(WARNING, "bad bin number (ignored)"); |
| 292 |
> |
worldfunc(RCCONTEXT, r); /* else set context */ |
| 293 |
> |
set_eparams((char *)mp->params); |
| 294 |
> |
if ((bval = evalue(mp->binv)) <= -.5) /* and get bin number */ |
| 295 |
> |
return; /* silently ignore negatives */ |
| 296 |
> |
if ((bn = (int)(bval + .5)) >= mp->nbins) { |
| 297 |
> |
sprintf(errmsg, "bad bin number (%d ignored)", bn); |
| 298 |
> |
error(WARNING, errmsg); |
| 299 |
|
return; |
| 300 |
|
} |
| 301 |
< |
raycontrib(contr, r, PRIMARY); |
| 301 |
> |
raycontrib(contr, r, PRIMARY); /* compute coefficient */ |
| 302 |
|
if (contrib) |
| 303 |
< |
multcolor(contr, r->rcol); |
| 304 |
< |
addcolor(mp->cbin[bn], contr); |
| 303 |
> |
smultscolor(contr, r->rcol); /* -> contribution */ |
| 304 |
> |
dvp = mcbin(mp, bn); |
| 305 |
> |
for (i = 0; i < NCSAMP; i++) /* add it in */ |
| 306 |
> |
*dvp++ += contr[i]; |
| 307 |
|
} |
| 308 |
|
|
| 309 |
|
|
| 319 |
|
thisray.rdir[2] = -dir[2]; |
| 320 |
|
thisray.rmax = 0.0; |
| 321 |
|
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 322 |
< |
thisray.rot = 1e-5; /* pretend we hit surface */ |
| 322 |
> |
/* pretend we hit surface */ |
| 323 |
> |
thisray.rxt = thisray.rot = 1e-5; |
| 324 |
|
thisray.rod = 1.0; |
| 325 |
+ |
VCOPY(thisray.ron, dir); |
| 326 |
|
VSUM(thisray.rop, org, dir, 1e-4); |
| 327 |
|
samplendx++; /* compute result */ |
| 328 |
|
(*ofun[Lamb.otype].funp)(&Lamb, &thisray); |
| 346 |
|
|
| 347 |
|
/* Accumulate and/or output ray contributions (child or only process) */ |
| 348 |
|
static void |
| 349 |
< |
done_contrib() |
| 349 |
> |
done_contrib(void) |
| 350 |
|
{ |
| 351 |
|
MODCONT *mp; |
| 352 |
|
int i; |
| 357 |
|
for (i = 0; i < nmods; i++) { /* output records & clear */ |
| 358 |
|
mp = (MODCONT *)lu_find(&modconttab,modname[i])->data; |
| 359 |
|
mod_output(mp); |
| 360 |
< |
memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins); |
| 360 |
> |
memset(mp->cbin, 0, DCOLORSIZ*mp->nbins); |
| 361 |
|
} |
| 362 |
|
end_record(); /* end lines & flush if time */ |
| 363 |
|
|
| 367 |
|
|
| 368 |
|
/* Principal calculation loop (called by main) */ |
| 369 |
|
void |
| 370 |
< |
rcontrib() |
| 370 |
> |
rcontrib(void) |
| 371 |
|
{ |
| 372 |
|
static int ignore_warning_given = 0; |
| 373 |
|
FVECT orig, direc; |
| 380 |
|
#endif |
| 381 |
|
while (getvec(orig) == 0 && getvec(direc) == 0) { |
| 382 |
|
d = normalize(direc); |
| 383 |
< |
if (nchild != -1 && (d == 0.0) & (accumulate != 1)) { |
| 383 |
> |
if (nchild != -1 && (d == 0.0) & (accumulate == 0)) { |
| 384 |
|
if (!ignore_warning_given++) |
| 385 |
|
error(WARNING, |
| 386 |
|
"dummy ray(s) ignored during accumulation\n"); |
| 390 |
|
lastray = lastdone = 0; |
| 391 |
|
++lastray; |
| 392 |
|
if (d == 0.0) { /* zero ==> flush */ |
| 393 |
< |
if ((yres <= 0) | (xres <= 0)) |
| 394 |
< |
waitflush = 1; /* flush right after */ |
| 395 |
< |
account = 1; |
| 393 |
> |
if ((yres <= 0) | (xres <= 1)) |
| 394 |
> |
waitflush = 1; /* flush after */ |
| 395 |
> |
if (nchild == -1) |
| 396 |
> |
account = 1; |
| 397 |
|
} else if (imm_irrad) { /* else compute */ |
| 398 |
|
eval_irrad(orig, direc); |
| 399 |
|
} else { |
| 401 |
|
} |
| 402 |
|
done_contrib(); /* accumulate/output */ |
| 403 |
|
++lastdone; |
| 404 |
< |
if (raysleft && !--raysleft) |
| 404 |
> |
if (!morays()) |
| 405 |
|
break; /* preemptive EOI */ |
| 406 |
|
} |
| 407 |
< |
if ((accumulate <= 0) | (account < accumulate)) { |
| 407 |
> |
if (nchild != -1 && (accumulate <= 0) | (account < accumulate)) { |
| 408 |
|
if (account < accumulate) { |
| 409 |
|
error(WARNING, "partial accumulation in final record"); |
| 410 |
|
accumulate -= account; |
