| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id$"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* Gather rtrace output to compute contributions from particular sources |
| 6 |
*/ |
| 7 |
|
| 8 |
#include <ctype.h> |
| 9 |
#include "rtio.h" |
| 10 |
#include "rterror.h" |
| 11 |
#include "platform.h" |
| 12 |
#include "rtprocess.h" |
| 13 |
#include "selcall.h" |
| 14 |
#include "color.h" |
| 15 |
#include "resolu.h" |
| 16 |
#include "lookup.h" |
| 17 |
#include "calcomp.h" |
| 18 |
|
| 19 |
#ifdef getc_unlocked /* avoid horrendous overhead of flockfile */ |
| 20 |
#undef getc |
| 21 |
#undef putc |
| 22 |
#define getc getc_unlocked |
| 23 |
#define putc putc_unlocked |
| 24 |
#define ferror ferror_unlocked |
| 25 |
#endif |
| 26 |
|
| 27 |
#define MAXMODLIST 1024 /* maximum modifiers we'll track */ |
| 28 |
|
| 29 |
int treebufsiz = BUFSIZ; /* current tree buffer size */ |
| 30 |
|
| 31 |
/* |
| 32 |
* The modcont structure is used to accumulate ray contributions |
| 33 |
* for a particular modifier, which may be subdivided into bins |
| 34 |
* if binv is non-NULL. If outspec contains a %s in it, this will |
| 35 |
* be replaced with the modifier name. If outspec contains a %d in it, |
| 36 |
* this will be used to create one output file per bin, otherwise all bins |
| 37 |
* will be written to the same file, in order. If the global outfmt |
| 38 |
* is 'c', then a 4-byte RGBE pixel will be output for each bin value |
| 39 |
* and the file will conform to a RADIANCE image if xres & yres are set. |
| 40 |
*/ |
| 41 |
typedef struct { |
| 42 |
const char *outspec; /* output file specification */ |
| 43 |
const char *modname; /* modifier name */ |
| 44 |
EPNODE *binv; /* bin value expression */ |
| 45 |
int nbins; /* number of accumulation bins */ |
| 46 |
COLOR cbin[1]; /* contribution bins (extends struct) */ |
| 47 |
} MODCONT; /* modifier contribution */ |
| 48 |
|
| 49 |
static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); } |
| 50 |
|
| 51 |
LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */ |
| 52 |
|
| 53 |
/* close output stream */ |
| 54 |
static void closefile(void *p) { fclose((FILE *)p); } |
| 55 |
|
| 56 |
LUTAB ofiletab = LU_SINIT(free,closefile); /* output file table */ |
| 57 |
|
| 58 |
FILE *getofile(const char *ospec, const char *mname, int bn); |
| 59 |
|
| 60 |
/* |
| 61 |
* The rcont structure is used to manage i/o with a particular |
| 62 |
* rtrace child process. Input is passed unchanged from stdin, |
| 63 |
* and output is processed in input order and accumulated according |
| 64 |
* to the corresponding modifier and bin number. |
| 65 |
*/ |
| 66 |
struct rtproc { |
| 67 |
struct rtproc *next; /* next in list of processes */ |
| 68 |
SUBPROC pd; /* rtrace pipe descriptors */ |
| 69 |
unsigned long raynum; /* ray number for this buffer */ |
| 70 |
int bsiz; /* rtrace buffer length */ |
| 71 |
char *buf; /* rtrace i/o buffer */ |
| 72 |
char *bpos; /* current buffer position */ |
| 73 |
}; /* rtrace process */ |
| 74 |
|
| 75 |
/* rtrace command and defaults */ |
| 76 |
char *rtargv[256] = { "rtrace", "-dj", ".5", "-dr", "3", |
| 77 |
"-ab", "1", "-ad", "512", }; |
| 78 |
int rtargc = 9; |
| 79 |
/* overriding rtrace options */ |
| 80 |
char *myrtopts[] = { "-o-TmWdp", "-h-", |
| 81 |
"-x", "1", "-y", "0", NULL }; |
| 82 |
|
| 83 |
struct rtproc rt0; /* head of rtrace process list */ |
| 84 |
|
| 85 |
struct rtproc *rt_unproc = NULL; /* unprocessed ray trees */ |
| 86 |
|
| 87 |
char persistfn[] = "pfXXXXXX"; /* persist file name */ |
| 88 |
char fmt[8]; /* rtrace i/o format */ |
| 89 |
|
| 90 |
int gargc; /* global argc */ |
| 91 |
char **gargv; /* global argv */ |
| 92 |
#define progname gargv[0] |
| 93 |
|
| 94 |
char *octree; /* global octree argument */ |
| 95 |
|
| 96 |
int inpfmt = 'a'; /* input format */ |
| 97 |
int outfmt = 'a'; /* output format */ |
| 98 |
|
| 99 |
int header = 1; /* output header? */ |
| 100 |
int xres = 0; /* horiz. output resolution */ |
| 101 |
int yres = 0; /* vert. output resolution */ |
| 102 |
|
| 103 |
long raysleft; /* number of rays left to trace */ |
| 104 |
long waitflush; /* how long until next flush */ |
| 105 |
|
| 106 |
unsigned long lastray = 0; /* last ray number sent */ |
| 107 |
unsigned long lastdone = 0; /* last ray processed */ |
| 108 |
|
| 109 |
const char *modname[MAXMODLIST]; /* ordered modifier name list */ |
| 110 |
int nmods = 0; /* number of modifiers */ |
| 111 |
|
| 112 |
MODCONT *addmodifier(char *modn, char *outf, char *binv); |
| 113 |
|
| 114 |
int done_rprocs(struct rtproc *rtp); |
| 115 |
void init(int np); |
| 116 |
void tracecontribs(FILE *fp); |
| 117 |
struct rtproc *wait_rproc(void); |
| 118 |
struct rtproc *get_rproc(void); |
| 119 |
void process_rays(struct rtproc *rtp); |
| 120 |
|
| 121 |
void add_contrib(const char *modn, float rayval[7]); |
| 122 |
void done_contrib(void); |
| 123 |
|
| 124 |
/* set input/output format */ |
| 125 |
static void |
| 126 |
setformat(const char *fmt) |
| 127 |
{ |
| 128 |
switch (fmt[0]) { |
| 129 |
case 'a': |
| 130 |
case 'f': |
| 131 |
case 'd': |
| 132 |
inpfmt = fmt[0]; |
| 133 |
break; |
| 134 |
default: |
| 135 |
goto fmterr; |
| 136 |
} |
| 137 |
switch (fmt[1]) { |
| 138 |
case '\0': |
| 139 |
outfmt = inpfmt; |
| 140 |
return; |
| 141 |
case 'a': |
| 142 |
case 'f': |
| 143 |
case 'd': |
| 144 |
case 'c': |
| 145 |
outfmt = fmt[1]; |
| 146 |
break; |
| 147 |
default: |
| 148 |
goto fmterr; |
| 149 |
} |
| 150 |
if (!fmt[2]) |
| 151 |
return; |
| 152 |
fmterr: |
| 153 |
sprintf(errmsg, "Illegal i/o format: -f%s", fmt); |
| 154 |
error(USER, errmsg); |
| 155 |
} |
| 156 |
|
| 157 |
/* gather rays from rtrace and output contributions */ |
| 158 |
int |
| 159 |
main(int argc, char *argv[]) |
| 160 |
{ |
| 161 |
int nprocs = 1; |
| 162 |
char *curout = NULL; |
| 163 |
char *binval = NULL; |
| 164 |
int i; |
| 165 |
/* set global argument list */ |
| 166 |
gargc = argc; |
| 167 |
gargv = argv; |
| 168 |
/* set up calcomp functions */ |
| 169 |
esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW; |
| 170 |
esupport &= ~(E_OUTCHAN); |
| 171 |
/* get our options */ |
| 172 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) { |
| 173 |
switch (argv[i][1]) { |
| 174 |
case 'n': /* number of processes */ |
| 175 |
if (argv[i][2] || i >= argc-1) break; |
| 176 |
nprocs = atoi(argv[++i]); |
| 177 |
if (nprocs <= 0) |
| 178 |
error(USER, "illegal number of processes"); |
| 179 |
continue; |
| 180 |
case 'h': /* output header? */ |
| 181 |
switch (argv[i][2]) { |
| 182 |
case '\0': |
| 183 |
header = !header; |
| 184 |
continue; |
| 185 |
case '+': case '1': case 'T': case 't': |
| 186 |
header = 1; |
| 187 |
continue; |
| 188 |
case '-': case '0': case 'F': case 'f': |
| 189 |
header = 0; |
| 190 |
continue; |
| 191 |
} |
| 192 |
break; |
| 193 |
case 'f': /* file or i/o format */ |
| 194 |
if (!argv[i][2]) { |
| 195 |
if (i >= argc-1) break; |
| 196 |
fcompile(argv[++i]); |
| 197 |
continue; |
| 198 |
} |
| 199 |
setformat(argv[i]+2); |
| 200 |
continue; |
| 201 |
case 'e': /* expression */ |
| 202 |
if (argv[i][2] || i >= argc-1) break; |
| 203 |
scompile(argv[++i], NULL, 0); |
| 204 |
continue; |
| 205 |
case 'o': /* output file spec. */ |
| 206 |
if (argv[i][2] || i >= argc-1) break; |
| 207 |
curout = argv[++i]; |
| 208 |
continue; |
| 209 |
case 'x': /* horiz. output resolution */ |
| 210 |
if (argv[i][2] || i >= argc-1) break; |
| 211 |
xres = atoi(argv[++i]); |
| 212 |
continue; |
| 213 |
case 'y': /* vert. output resolution */ |
| 214 |
if (argv[i][2] || i >= argc-1) break; |
| 215 |
yres = atoi(argv[++i]); |
| 216 |
continue; |
| 217 |
case 'l': /* limit distance? */ |
| 218 |
if (argv[i][2] != 'd') break; |
| 219 |
rtargv[rtargc++] = argv[i]; |
| 220 |
continue; |
| 221 |
case 'b': /* bin expression */ |
| 222 |
if (argv[i][2] || i >= argc-1) break; |
| 223 |
binval = argv[++i]; |
| 224 |
continue; |
| 225 |
case 'm': /* modifier name */ |
| 226 |
if (argv[i][2] || i >= argc-1) break; |
| 227 |
rtargv[rtargc++] = "-ti"; |
| 228 |
rtargv[rtargc++] = argv[++i]; |
| 229 |
addmodifier(argv[i], curout, binval); |
| 230 |
continue; |
| 231 |
} |
| 232 |
break; /* break into rtrace options */ |
| 233 |
} |
| 234 |
for ( ; i < argc; i++) /* transfer rtrace-specific options */ |
| 235 |
rtargv[rtargc++] = argv[i]; |
| 236 |
if (!strcmp(rtargv[--rtargc], "-defaults")) |
| 237 |
nprocs = 0; |
| 238 |
if (nprocs > 1) { /* add persist file if parallel invocation */ |
| 239 |
rtargv[rtargc++] = "-PP"; |
| 240 |
rtargv[rtargc++] = mktemp(persistfn); |
| 241 |
} |
| 242 |
/* add "mandatory" rtrace settings */ |
| 243 |
for (i = 0; myrtopts[i] != NULL; i++) |
| 244 |
rtargv[rtargc++] = myrtopts[i]; |
| 245 |
if (!nprocs) { /* just asking for defaults? */ |
| 246 |
char sxres[16], syres[16]; |
| 247 |
char *rtpath; |
| 248 |
printf("-n 1\t\t\t\t# number of processes\n", nprocs); |
| 249 |
fflush(stdout); /* report OUR options */ |
| 250 |
rtargv[rtargc++] = header ? "-h+" : "-h-"; |
| 251 |
sprintf(fmt, "-f%c%c", inpfmt, outfmt); |
| 252 |
rtargv[rtargc++] = fmt; |
| 253 |
rtargv[rtargc++] = "-x"; |
| 254 |
sprintf(sxres, "%d", xres); |
| 255 |
rtargv[rtargc++] = sxres; |
| 256 |
rtargv[rtargc++] = "-y"; |
| 257 |
sprintf(syres, "%d", yres); |
| 258 |
rtargv[rtargc++] = syres; |
| 259 |
rtargv[rtargc++] = "-oW"; |
| 260 |
rtargv[rtargc++] = "-defaults"; |
| 261 |
rtargv[rtargc] = NULL; |
| 262 |
rtpath = getpath(rtargv[0], getenv("PATH"), X_OK); |
| 263 |
if (rtpath == NULL) { |
| 264 |
eputs(rtargv[0]); |
| 265 |
eputs(": command not found\n"); |
| 266 |
exit(1); |
| 267 |
} |
| 268 |
execv(rtpath, rtargv); |
| 269 |
perror(rtpath); /* execv() should not return */ |
| 270 |
exit(1); |
| 271 |
} |
| 272 |
if (!nmods) |
| 273 |
error(USER, "No modifiers specified"); |
| 274 |
if (argc < 2 || argv[argc-1][0] == '-') |
| 275 |
error(USER, "missing octree argument"); |
| 276 |
/* add format string */ |
| 277 |
sprintf(fmt, "-f%cf", inpfmt); |
| 278 |
rtargv[rtargc++] = fmt; |
| 279 |
/* octree argument is last */ |
| 280 |
rtargv[rtargc++] = octree = argv[argc-1]; |
| 281 |
rtargv[rtargc] = NULL; |
| 282 |
/* start rtrace & sum contributions */ |
| 283 |
init(nprocs); |
| 284 |
tracecontribs(stdin); |
| 285 |
quit(0); |
| 286 |
} |
| 287 |
|
| 288 |
/* kill persistent rtrace process */ |
| 289 |
static void |
| 290 |
killpersist(void) |
| 291 |
{ |
| 292 |
FILE *fp = fopen(persistfn, "r"); |
| 293 |
int pid; |
| 294 |
|
| 295 |
if (fp == NULL) |
| 296 |
return; |
| 297 |
if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0) |
| 298 |
unlink(persistfn); |
| 299 |
fclose(fp); |
| 300 |
} |
| 301 |
|
| 302 |
/* close rtrace processes and clean up */ |
| 303 |
int |
| 304 |
done_rprocs(struct rtproc *rtp) |
| 305 |
{ |
| 306 |
int st0, st1 = 0; |
| 307 |
|
| 308 |
if (rtp->next != NULL) { /* close last opened first! */ |
| 309 |
st1 = done_rprocs(rtp->next); |
| 310 |
free((void *)rtp->next); |
| 311 |
rtp->next = NULL; |
| 312 |
} |
| 313 |
st0 = close_process(&rtp->pd); |
| 314 |
if (st0 < 0) |
| 315 |
error(WARNING, "unknown return status from rtrace process"); |
| 316 |
else if (st0 > 0) |
| 317 |
return(st0); |
| 318 |
return(st1); |
| 319 |
} |
| 320 |
|
| 321 |
/* exit with status */ |
| 322 |
void |
| 323 |
quit(int status) |
| 324 |
{ |
| 325 |
int rtstat; |
| 326 |
|
| 327 |
if (rt0.next != NULL) /* terminate persistent rtrace */ |
| 328 |
killpersist(); |
| 329 |
/* clean up rtrace process(es) */ |
| 330 |
rtstat = done_rprocs(&rt0); |
| 331 |
if (status == 0) |
| 332 |
status = rtstat; |
| 333 |
exit(status); /* flushes all output streams */ |
| 334 |
} |
| 335 |
|
| 336 |
/* start rtrace and initialize buffers */ |
| 337 |
void |
| 338 |
init(int np) |
| 339 |
{ |
| 340 |
struct rtproc *rtp; |
| 341 |
int i; |
| 342 |
int maxbytes; |
| 343 |
/* assign ray variables */ |
| 344 |
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
| 345 |
scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0); |
| 346 |
/* set up signal handling */ |
| 347 |
#ifdef SIGPIPE /* not present on Windows */ |
| 348 |
signal(SIGPIPE, quit); |
| 349 |
#endif |
| 350 |
rtp = &rt0; /* start rtrace process(es) */ |
| 351 |
for (i = 0; i++ < np; ) { |
| 352 |
errno = 0; |
| 353 |
maxbytes = open_process(&rtp->pd, rtargv); |
| 354 |
if (maxbytes == 0) { |
| 355 |
eputs(rtargv[0]); |
| 356 |
eputs(": command not found\n"); |
| 357 |
exit(1); |
| 358 |
} |
| 359 |
if (maxbytes < 0) |
| 360 |
error(SYSTEM, "cannot start rtrace process"); |
| 361 |
if (maxbytes > treebufsiz) |
| 362 |
treebufsiz = maxbytes; |
| 363 |
rtp->bsiz = 0; |
| 364 |
rtp->buf = NULL; |
| 365 |
rtp->raynum = 0; |
| 366 |
if (i == np) /* last process? */ |
| 367 |
break; |
| 368 |
if (i == 1) |
| 369 |
sleep(2); /* wait for persist file */ |
| 370 |
rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc)); |
| 371 |
if (rtp->next == NULL) |
| 372 |
error(SYSTEM, "out of memory in init"); |
| 373 |
rtp = rtp->next; |
| 374 |
} |
| 375 |
rtp->next = NULL; /* terminate list */ |
| 376 |
if (yres > 0) { |
| 377 |
if (xres > 0) |
| 378 |
raysleft = xres*yres; |
| 379 |
else |
| 380 |
raysleft = yres; |
| 381 |
} else |
| 382 |
raysleft = 0; |
| 383 |
waitflush = xres; |
| 384 |
} |
| 385 |
|
| 386 |
/* add modifier to our list to track */ |
| 387 |
MODCONT * |
| 388 |
addmodifier(char *modn, char *outf, char *binv) |
| 389 |
{ |
| 390 |
LUENT *lep = lu_find(&modconttab, modn); |
| 391 |
MODCONT *mp; |
| 392 |
|
| 393 |
if (lep->data != NULL) { |
| 394 |
sprintf(errmsg, "duplicate modifier '%s'", modn); |
| 395 |
error(USER, errmsg); |
| 396 |
} |
| 397 |
if (nmods >= MAXMODLIST) |
| 398 |
error(USER, "too many modifiers"); |
| 399 |
modname[nmods++] = modn; /* XXX assumes static string */ |
| 400 |
lep->key = modn; /* XXX assumes static string */ |
| 401 |
mp = (MODCONT *)malloc(sizeof(MODCONT)); |
| 402 |
if (mp == NULL) |
| 403 |
error(SYSTEM, "out of memory in addmodifier"); |
| 404 |
lep->data = (char *)mp; |
| 405 |
mp->outspec = outf; /* XXX assumes static string */ |
| 406 |
mp->modname = modn; /* XXX assumes static string */ |
| 407 |
if (binv != NULL) |
| 408 |
mp->binv = eparse(binv); |
| 409 |
else |
| 410 |
mp->binv = eparse("0"); |
| 411 |
mp->nbins = 1; |
| 412 |
setcolor(mp->cbin[0], 0., 0., 0.); |
| 413 |
return mp; |
| 414 |
} |
| 415 |
|
| 416 |
/* put string to stderr */ |
| 417 |
void |
| 418 |
eputs(char *s) |
| 419 |
{ |
| 420 |
static int midline = 0; |
| 421 |
|
| 422 |
if (!*s) return; |
| 423 |
if (!midline) { |
| 424 |
fputs(progname, stderr); |
| 425 |
fputs(": ", stderr); |
| 426 |
} |
| 427 |
fputs(s, stderr); |
| 428 |
midline = s[strlen(s)-1] != '\n'; |
| 429 |
} |
| 430 |
|
| 431 |
/* write header to the given output stream */ |
| 432 |
void |
| 433 |
printheader(FILE *fout) |
| 434 |
{ |
| 435 |
extern char VersionID[]; |
| 436 |
FILE *fin = fopen(octree, "r"); |
| 437 |
|
| 438 |
if (fin == NULL) |
| 439 |
quit(1); |
| 440 |
getheader(fin, (gethfunc *)fputs, fout); /* copy octree header */ |
| 441 |
fclose(fin); |
| 442 |
printargs(gargc-1, gargv, fout); /* add our command */ |
| 443 |
fprintf(fout, "SOFTWARE= %s\n", VersionID); |
| 444 |
fputnow(fout); |
| 445 |
switch (outfmt) { /* add output format */ |
| 446 |
case 'a': |
| 447 |
fputformat("ascii", fout); |
| 448 |
break; |
| 449 |
case 'f': |
| 450 |
fputformat("float", fout); |
| 451 |
break; |
| 452 |
case 'd': |
| 453 |
fputformat("double", fout); |
| 454 |
break; |
| 455 |
case 'c': |
| 456 |
fputformat(COLRFMT, fout); |
| 457 |
break; |
| 458 |
} |
| 459 |
fputc('\n', fout); |
| 460 |
if (xres > 0) { |
| 461 |
if (yres > 0) /* resolution string */ |
| 462 |
fprtresolu(xres, yres, fout); |
| 463 |
fflush(fout); |
| 464 |
} |
| 465 |
} |
| 466 |
|
| 467 |
/* Get output file pointer (open and write header if new) */ |
| 468 |
FILE * |
| 469 |
getofile(const char *ospec, const char *mname, int bn) |
| 470 |
{ |
| 471 |
static int using_stdout = 0; |
| 472 |
const char *mnp = NULL; |
| 473 |
const char *bnp = NULL; |
| 474 |
const char *cp; |
| 475 |
char ofname[1024]; |
| 476 |
LUENT *lep; |
| 477 |
|
| 478 |
if (ospec == NULL) { /* use stdout? */ |
| 479 |
if (!using_stdout && header) |
| 480 |
printheader(stdout); |
| 481 |
using_stdout = 1; |
| 482 |
return stdout; |
| 483 |
} |
| 484 |
for (cp = ospec; *cp; cp++) /* check format position(s) */ |
| 485 |
if (*cp == '%') { |
| 486 |
do |
| 487 |
++cp; |
| 488 |
while (isdigit(*cp)); |
| 489 |
switch (*cp) { |
| 490 |
case '%': |
| 491 |
break; |
| 492 |
case 's': |
| 493 |
if (mnp != NULL) |
| 494 |
goto badspec; |
| 495 |
mnp = cp; |
| 496 |
break; |
| 497 |
case 'd': |
| 498 |
if (bnp != NULL) |
| 499 |
goto badspec; |
| 500 |
bnp = cp; |
| 501 |
break; |
| 502 |
default: |
| 503 |
goto badspec; |
| 504 |
} |
| 505 |
} |
| 506 |
if (mnp != NULL) { /* create file name */ |
| 507 |
if (bnp != NULL) { |
| 508 |
if (bnp > mnp) |
| 509 |
sprintf(ofname, ospec, mname, bn); |
| 510 |
else |
| 511 |
sprintf(ofname, ospec, bn, mname); |
| 512 |
} else |
| 513 |
sprintf(ofname, ospec, mname); |
| 514 |
} else if (bnp != NULL) |
| 515 |
sprintf(ofname, ospec, bn); |
| 516 |
else |
| 517 |
strcpy(ofname, ospec); |
| 518 |
lep = lu_find(&ofiletab, ofname); /* look it up */ |
| 519 |
if (lep->key == NULL) /* new entry */ |
| 520 |
lep->key = strcpy((char *)malloc(strlen(ofname)+1), ofname); |
| 521 |
if (lep->data == NULL) { /* open output file */ |
| 522 |
lep->data = (char *)fopen(ofname, "w"); |
| 523 |
if (lep->data == NULL) { |
| 524 |
sprintf(errmsg, "cannot open '%s' for writing", ofname); |
| 525 |
error(SYSTEM, errmsg); |
| 526 |
} |
| 527 |
if (header) |
| 528 |
printheader((FILE *)lep->data); |
| 529 |
} |
| 530 |
return (FILE *)lep->data; /* return open file pointer */ |
| 531 |
badspec: |
| 532 |
sprintf(errmsg, "bad output format '%s'", ospec); |
| 533 |
error(USER, errmsg); |
| 534 |
return NULL; /* pro forma return */ |
| 535 |
} |
| 536 |
|
| 537 |
/* read input ray into buffer */ |
| 538 |
int |
| 539 |
getinp(char *buf, FILE *fp) |
| 540 |
{ |
| 541 |
switch (inpfmt) { |
| 542 |
case 'a': |
| 543 |
if (fgets(buf, 128, fp) == NULL) |
| 544 |
return 0; |
| 545 |
return strlen(buf); |
| 546 |
case 'f': |
| 547 |
if (fread(buf, sizeof(float), 6, fp) < 6) |
| 548 |
return 0; |
| 549 |
return sizeof(float)*6; |
| 550 |
case 'd': |
| 551 |
if (fread(buf, sizeof(double), 6, fp) < 6) |
| 552 |
return 0; |
| 553 |
return sizeof(double)*6; |
| 554 |
} |
| 555 |
error(INTERNAL, "botched input format"); |
| 556 |
return 0; /* pro forma return */ |
| 557 |
} |
| 558 |
|
| 559 |
static const float *rparams = NULL; /* ray parameter pointer */ |
| 560 |
|
| 561 |
/* return channel (ray) value */ |
| 562 |
double |
| 563 |
chanvalue(int n) |
| 564 |
{ |
| 565 |
if (--n < 0 || n >= 6) |
| 566 |
error(USER, "illegal channel number ($N)"); |
| 567 |
if (rparams == NULL) |
| 568 |
error(USER, "illegal use of $N in constant expression"); |
| 569 |
return rparams[n]; |
| 570 |
} |
| 571 |
|
| 572 |
/* add ray contribution to the appropriate modifier bin */ |
| 573 |
void |
| 574 |
add_contrib(const char *modn, float rayval[9]) |
| 575 |
{ |
| 576 |
LUENT *le = lu_find(&modconttab, modn); |
| 577 |
MODCONT *mp = (MODCONT *)le->data; |
| 578 |
int bn; |
| 579 |
|
| 580 |
if (mp == NULL) { |
| 581 |
sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn); |
| 582 |
error(USER, errmsg); |
| 583 |
} |
| 584 |
rparams = rayval + 3; /* for chanvalue */ |
| 585 |
eclock++; |
| 586 |
bn = (int)(evalue(mp->binv) + .5); |
| 587 |
if (bn <= 0) |
| 588 |
bn = 0; |
| 589 |
else if (bn > mp->nbins) { /* new bin */ |
| 590 |
mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + |
| 591 |
bn*sizeof(COLOR)); |
| 592 |
if (mp == NULL) |
| 593 |
error(SYSTEM, "out of memory in add_contrib"); |
| 594 |
memset(mp->cbin+mp->nbins, 0, sizeof(COLOR)*(bn+1-mp->nbins)); |
| 595 |
mp->nbins = bn+1; |
| 596 |
le->data = (char *)mp; |
| 597 |
} |
| 598 |
addcolor(mp->cbin[bn], rayval); |
| 599 |
rparams = NULL; |
| 600 |
} |
| 601 |
|
| 602 |
/* output newline to ASCII file and/or flush as requested */ |
| 603 |
static int |
| 604 |
puteol(const LUENT *e, void *p) |
| 605 |
{ |
| 606 |
FILE *fp = (FILE *)e->data; |
| 607 |
|
| 608 |
if (outfmt == 'a') |
| 609 |
putc('\n', fp); |
| 610 |
if (!waitflush) |
| 611 |
fflush(fp); |
| 612 |
if (ferror(fp)) { |
| 613 |
sprintf(errmsg, "write error on file '%s'", e->key); |
| 614 |
error(SYSTEM, errmsg); |
| 615 |
} |
| 616 |
return 0; |
| 617 |
} |
| 618 |
|
| 619 |
/* output ray tallies and clear for next primary */ |
| 620 |
void |
| 621 |
done_contrib(void) |
| 622 |
{ |
| 623 |
int i, j; |
| 624 |
MODCONT *mp; |
| 625 |
FILE *fout; |
| 626 |
double dv[3]; |
| 627 |
COLR cv; |
| 628 |
/* output modifiers in order */ |
| 629 |
for (i = 0; i < nmods; i++) { |
| 630 |
mp = (MODCONT *)lu_find(&modconttab,modname[i])->data; |
| 631 |
for (j = 0; j < mp->nbins; j++) { |
| 632 |
fout = getofile(mp->outspec, mp->modname, j); |
| 633 |
switch (outfmt) { |
| 634 |
case 'a': |
| 635 |
fprintf(fout, "%.6e\t%.6e\t%.6e\t", |
| 636 |
mp->cbin[j][RED], |
| 637 |
mp->cbin[j][GRN], |
| 638 |
mp->cbin[j][BLU]); |
| 639 |
break; |
| 640 |
case 'f': |
| 641 |
fwrite(mp->cbin[j], sizeof(float), 3, fout); |
| 642 |
break; |
| 643 |
case 'd': |
| 644 |
dv[0] = mp->cbin[j][0]; |
| 645 |
dv[1] = mp->cbin[j][1]; |
| 646 |
dv[2] = mp->cbin[j][2]; |
| 647 |
fwrite(dv, sizeof(double), 3, fout); |
| 648 |
break; |
| 649 |
case 'c': |
| 650 |
setcolr(cv, mp->cbin[j][RED], |
| 651 |
mp->cbin[j][GRN], mp->cbin[j][BLU]); |
| 652 |
fwrite(cv, sizeof(COLR), 1, fout); |
| 653 |
break; |
| 654 |
default: |
| 655 |
error(INTERNAL, "botched output format"); |
| 656 |
} |
| 657 |
} |
| 658 |
/* clear for next ray tree */ |
| 659 |
memset(mp->cbin, 0, sizeof(COLOR)*mp->nbins); |
| 660 |
} |
| 661 |
--waitflush; /* terminate records */ |
| 662 |
lu_doall(&ofiletab, puteol, NULL); |
| 663 |
if (!waitflush) |
| 664 |
waitflush = xres; |
| 665 |
} |
| 666 |
|
| 667 |
/* process (or save) ray tree produced by rtrace process */ |
| 668 |
void |
| 669 |
process_rays(struct rtproc *rtp) |
| 670 |
{ |
| 671 |
struct rtproc *rtu; |
| 672 |
/* check if time to process it */ |
| 673 |
if (rtp->raynum == lastdone+1) { |
| 674 |
int n = rtp->bpos - rtp->buf; |
| 675 |
const char *cp = rtp->buf; |
| 676 |
while (n > 0) { /* process rays */ |
| 677 |
char matname[128]; |
| 678 |
char *mnp = matname; |
| 679 |
/* skip leading tabs */ |
| 680 |
while (n > 0 && *cp == '\t') { |
| 681 |
cp++; n--; |
| 682 |
} |
| 683 |
/* get material name */ |
| 684 |
while (n > 0 && *cp != '\t') { |
| 685 |
*mnp++ = *cp++; n--; |
| 686 |
} |
| 687 |
if (!n) |
| 688 |
error(USER, "botched modifer name from rtrace"); |
| 689 |
*mnp = '\0'; |
| 690 |
cp++; n--; /* skip terminating tab */ |
| 691 |
if (n < (int)(sizeof(float)*9)) |
| 692 |
error(USER, "incomplete ray value from rtrace"); |
| 693 |
/* add ray contribution */ |
| 694 |
add_contrib(matname, (float *)cp); |
| 695 |
cp += sizeof(float)*9; n -= sizeof(float)*9; |
| 696 |
} |
| 697 |
done_contrib(); /* sum up contributions & output */ |
| 698 |
lastdone = rtp->raynum; |
| 699 |
free(rtp->buf); |
| 700 |
/* catch up with unprocessed list */ |
| 701 |
while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) { |
| 702 |
process_rays(rt_unproc); |
| 703 |
rt_unproc = (rtu=rt_unproc)->next; |
| 704 |
free(rtu); |
| 705 |
} |
| 706 |
} else { /* else insert in unprocessed list */ |
| 707 |
struct rtproc *rtl = NULL; |
| 708 |
for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next) |
| 709 |
if (rtp->raynum < rtu->raynum) |
| 710 |
break; |
| 711 |
rtu = (struct rtproc *)malloc(sizeof(struct rtproc)); |
| 712 |
if (rtu == NULL) |
| 713 |
error(SYSTEM, "out of memory in process_rays"); |
| 714 |
*rtu = *rtp; |
| 715 |
if (rtl == NULL) { |
| 716 |
rtu->next = rt_unproc; |
| 717 |
rt_unproc = rtu; |
| 718 |
} else { |
| 719 |
rtu->next = rtl->next; |
| 720 |
rtl->next = rtu; |
| 721 |
} |
| 722 |
} |
| 723 |
rtp->raynum = 0; /* clear path for next ray tree */ |
| 724 |
rtp->bsiz = 0; |
| 725 |
rtp->buf = NULL; |
| 726 |
} |
| 727 |
|
| 728 |
/* wait for rtrace process to finish with ray tree */ |
| 729 |
struct rtproc * |
| 730 |
wait_rproc(void) |
| 731 |
{ |
| 732 |
struct rtproc *rtfree = NULL; |
| 733 |
fd_set readset, errset; |
| 734 |
int nr; |
| 735 |
struct rtproc *rt; |
| 736 |
int n; |
| 737 |
|
| 738 |
do { |
| 739 |
nr = 0; /* prepare select call */ |
| 740 |
FD_ZERO(&readset); FD_ZERO(&errset); n = 0; |
| 741 |
for (rt = &rt0; rt != NULL; rt = rt->next) { |
| 742 |
if (rt->raynum) { |
| 743 |
FD_SET(rt->pd.r, &readset); |
| 744 |
++nr; |
| 745 |
} |
| 746 |
FD_SET(rt->pd.r, &errset); |
| 747 |
if (rt->pd.r >= n) |
| 748 |
n = rt->pd.r + 1; |
| 749 |
} |
| 750 |
if (!nr) /* no rays pending */ |
| 751 |
break; |
| 752 |
if (nr > 1) { /* call select for multiple proc's */ |
| 753 |
errno = 0; |
| 754 |
if (select(n, &readset, NULL, &errset, NULL) < 0) |
| 755 |
error(SYSTEM, "select call error in wait_rproc()"); |
| 756 |
} else |
| 757 |
FD_ZERO(&errset); |
| 758 |
nr = 0; |
| 759 |
for (rt = &rt0; rt != NULL; rt = rt->next) { |
| 760 |
if (!FD_ISSET(rt->pd.r, &readset) && |
| 761 |
!FD_ISSET(rt->pd.r, &errset)) |
| 762 |
continue; |
| 763 |
if (rt->buf == NULL) { |
| 764 |
rt->bsiz = treebufsiz; |
| 765 |
rt->buf = (char *)malloc(treebufsiz); |
| 766 |
} else if (rt->bpos + BUFSIZ > rt->buf + rt->bsiz) { |
| 767 |
if (rt->bsiz + BUFSIZ <= treebufsiz) |
| 768 |
rt->bsiz = treebufsiz; |
| 769 |
else |
| 770 |
rt->bsiz = treebufsiz += BUFSIZ; |
| 771 |
rt->buf = (char *)realloc(rt->buf, rt->bsiz); |
| 772 |
} |
| 773 |
if (rt->buf == NULL) |
| 774 |
error(SYSTEM, "out of memory in wait_rproc"); |
| 775 |
nr = read(rt->pd.r, rt->bpos, |
| 776 |
rt->buf + rt->bsiz - rt->bpos); |
| 777 |
if (!nr) |
| 778 |
error(USER, "rtrace process died"); |
| 779 |
rt->bpos += nr; /* advance buffer & check */ |
| 780 |
if (rt->bpos[-1] == '\t' && rt->bpos[-2] == '-') { |
| 781 |
rt->bpos -= 2; /* elide terminator */ |
| 782 |
process_rays(rt); |
| 783 |
rtfree = rt; /* ready for next ray */ |
| 784 |
} |
| 785 |
} |
| 786 |
} while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */ |
| 787 |
return rtfree; |
| 788 |
} |
| 789 |
|
| 790 |
/* return next available rtrace process */ |
| 791 |
struct rtproc * |
| 792 |
get_rproc(void) |
| 793 |
{ |
| 794 |
struct rtproc *rtp; |
| 795 |
/* check for idle rtrace */ |
| 796 |
for (rtp = &rt0; rtp != NULL; rtp = rtp->next) |
| 797 |
if (!rtp->raynum) |
| 798 |
return rtp; |
| 799 |
return wait_rproc(); /* need to wait for one */ |
| 800 |
} |
| 801 |
|
| 802 |
/* trace ray contributions (main loop) */ |
| 803 |
void |
| 804 |
tracecontribs(FILE *fin) |
| 805 |
{ |
| 806 |
char inpbuf[128]; |
| 807 |
int iblen; |
| 808 |
struct rtproc *rtp; |
| 809 |
/* loop over input */ |
| 810 |
while ((iblen = getinp(inpbuf, fin)) > 0) { |
| 811 |
if (lastray+1 < lastray) { /* counter rollover? */ |
| 812 |
while (wait_rproc() != NULL) |
| 813 |
; |
| 814 |
lastdone = lastray = 0; |
| 815 |
} |
| 816 |
rtp = get_rproc(); /* get avail. rtrace process */ |
| 817 |
rtp->raynum = ++lastray; /* assign this ray to it */ |
| 818 |
writebuf(rtp->pd.w, inpbuf, iblen); |
| 819 |
if (!--raysleft) |
| 820 |
break; /* explicit EOF */ |
| 821 |
} |
| 822 |
while (wait_rproc() != NULL) /* process outstanding rays */ |
| 823 |
; |
| 824 |
} |
