1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rtmain.c,v 2.29 2019/04/18 23:58:22 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* rtmain.c - main for rtrace per-ray calculation program |
6 |
*/ |
7 |
|
8 |
#include "copyright.h" |
9 |
|
10 |
#include <signal.h> |
11 |
|
12 |
#include "platform.h" |
13 |
#include "rtprocess.h" /* getpid() */ |
14 |
#include "resolu.h" |
15 |
#include "ray.h" |
16 |
#include "source.h" |
17 |
#include "ambient.h" |
18 |
#include "random.h" |
19 |
#include "paths.h" |
20 |
#include "pmapray.h" |
21 |
|
22 |
extern char *progname; /* global argv[0] */ |
23 |
|
24 |
extern char *shm_boundary; /* boundary of shared memory */ |
25 |
|
26 |
/* persistent processes define */ |
27 |
#ifdef F_SETLKW |
28 |
#define PERSIST 1 /* normal persist */ |
29 |
#define PARALLEL 2 /* parallel persist */ |
30 |
#define PCHILD 3 /* child of normal persist */ |
31 |
#endif |
32 |
|
33 |
char *sigerr[NSIG]; /* signal error messages */ |
34 |
char *errfile = NULL; /* error output file */ |
35 |
|
36 |
int nproc = 1; /* number of processes */ |
37 |
|
38 |
extern char *formstr(); /* string from format */ |
39 |
int inform = 'a'; /* input format */ |
40 |
int outform = 'a'; /* output format */ |
41 |
char *outvals = "v"; /* output specification */ |
42 |
|
43 |
int hresolu = 0; /* horizontal (scan) size */ |
44 |
int vresolu = 0; /* vertical resolution */ |
45 |
|
46 |
int imm_irrad = 0; /* compute immediate irradiance? */ |
47 |
int lim_dist = 0; /* limit distance? */ |
48 |
|
49 |
#ifndef MAXMODLIST |
50 |
#define MAXMODLIST 1024 /* maximum modifiers we'll track */ |
51 |
#endif |
52 |
|
53 |
extern void (*addobjnotify[])(); /* object notification calls */ |
54 |
extern void tranotify(OBJECT obj); |
55 |
|
56 |
char *tralist[MAXMODLIST]; /* list of modifers to trace (or no) */ |
57 |
int traincl = -1; /* include == 1, exclude == 0 */ |
58 |
|
59 |
static int loadflags = ~IO_FILES; /* what to load from octree */ |
60 |
|
61 |
static void onsig(int signo); |
62 |
static void sigdie(int signo, char *msg); |
63 |
static void printdefaults(void); |
64 |
|
65 |
|
66 |
int |
67 |
main(int argc, char *argv[]) |
68 |
{ |
69 |
#define check(ol,al) if (argv[i][ol] || \ |
70 |
badarg(argc-i-1,argv+i+1,al)) \ |
71 |
goto badopt |
72 |
#define check_bool(olen,var) switch (argv[i][olen]) { \ |
73 |
case '\0': var = !var; break; \ |
74 |
case 'y': case 'Y': case 't': case 'T': \ |
75 |
case '+': case '1': var = 1; break; \ |
76 |
case 'n': case 'N': case 'f': case 'F': \ |
77 |
case '-': case '0': var = 0; break; \ |
78 |
default: goto badopt; } |
79 |
extern char *octname; |
80 |
int persist = 0; |
81 |
char *octnm = NULL; |
82 |
char **tralp = NULL; |
83 |
int duped1 = -1; |
84 |
int rval; |
85 |
int i; |
86 |
/* global program name */ |
87 |
progname = argv[0] = fixargv0(argv[0]); |
88 |
/* add trace notify function */ |
89 |
for (i = 0; addobjnotify[i] != NULL; i++) |
90 |
; |
91 |
addobjnotify[i] = tranotify; |
92 |
/* option city */ |
93 |
for (i = 1; i < argc; i++) { |
94 |
/* expand arguments */ |
95 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
96 |
; |
97 |
if (rval < 0) { |
98 |
sprintf(errmsg, "cannot expand '%s'", argv[i]); |
99 |
error(SYSTEM, errmsg); |
100 |
} |
101 |
if (argv[i] == NULL || argv[i][0] != '-') |
102 |
break; /* break from options */ |
103 |
if (!strcmp(argv[i], "-version")) { |
104 |
puts(VersionID); |
105 |
quit(0); |
106 |
} |
107 |
if (!strcmp(argv[i], "-defaults") || |
108 |
!strcmp(argv[i], "-help")) { |
109 |
printdefaults(); |
110 |
quit(0); |
111 |
} |
112 |
rval = getrenderopt(argc-i, argv+i); |
113 |
if (rval >= 0) { |
114 |
i += rval; |
115 |
continue; |
116 |
} |
117 |
switch (argv[i][1]) { |
118 |
case 'n': /* number of cores */ |
119 |
check(2,"i"); |
120 |
nproc = atoi(argv[++i]); |
121 |
if (nproc <= 0) |
122 |
error(USER, "bad number of processes"); |
123 |
break; |
124 |
case 'x': /* x resolution */ |
125 |
check(2,"i"); |
126 |
hresolu = atoi(argv[++i]); |
127 |
break; |
128 |
case 'y': /* y resolution */ |
129 |
check(2,"i"); |
130 |
vresolu = atoi(argv[++i]); |
131 |
break; |
132 |
case 'w': /* warnings */ |
133 |
rval = erract[WARNING].pf != NULL; |
134 |
check_bool(2,rval); |
135 |
if (rval) erract[WARNING].pf = wputs; |
136 |
else erract[WARNING].pf = NULL; |
137 |
break; |
138 |
case 'e': /* error file */ |
139 |
check(2,"s"); |
140 |
errfile = argv[++i]; |
141 |
break; |
142 |
case 'l': /* limit distance */ |
143 |
if (argv[i][2] != 'd') |
144 |
goto badopt; |
145 |
check_bool(3,lim_dist); |
146 |
break; |
147 |
case 'I': /* immed. irradiance */ |
148 |
check_bool(2,imm_irrad); |
149 |
break; |
150 |
case 'f': /* format i/o */ |
151 |
switch (argv[i][2]) { |
152 |
case 'a': /* ascii */ |
153 |
case 'f': /* float */ |
154 |
case 'd': /* double */ |
155 |
inform = argv[i][2]; |
156 |
break; |
157 |
default: |
158 |
goto badopt; |
159 |
} |
160 |
switch (argv[i][3]) { |
161 |
case '\0': |
162 |
outform = inform; |
163 |
break; |
164 |
case 'a': /* ascii */ |
165 |
case 'f': /* float */ |
166 |
case 'd': /* double */ |
167 |
case 'c': /* color */ |
168 |
check(4,""); |
169 |
outform = argv[i][3]; |
170 |
break; |
171 |
default: |
172 |
goto badopt; |
173 |
} |
174 |
break; |
175 |
case 'o': /* output */ |
176 |
outvals = argv[i]+2; |
177 |
break; |
178 |
case 'h': /* header output */ |
179 |
rval = loadflags & IO_INFO; |
180 |
check_bool(2,rval); |
181 |
loadflags = rval ? loadflags | IO_INFO : |
182 |
loadflags & ~IO_INFO; |
183 |
break; |
184 |
case 't': /* trace */ |
185 |
switch (argv[i][2]) { |
186 |
case 'i': /* include */ |
187 |
case 'I': |
188 |
check(3,"s"); |
189 |
if (traincl != 1) { |
190 |
traincl = 1; |
191 |
tralp = tralist; |
192 |
} |
193 |
if (argv[i][2] == 'I') { /* file */ |
194 |
rval = wordfile(tralp, MAXMODLIST-(tralp-tralist), |
195 |
getpath(argv[++i],getrlibpath(),R_OK)); |
196 |
if (rval < 0) { |
197 |
sprintf(errmsg, |
198 |
"cannot open trace include file \"%s\"", |
199 |
argv[i]); |
200 |
error(SYSTEM, errmsg); |
201 |
} |
202 |
tralp += rval; |
203 |
} else { |
204 |
*tralp++ = argv[++i]; |
205 |
*tralp = NULL; |
206 |
} |
207 |
break; |
208 |
case 'e': /* exclude */ |
209 |
case 'E': |
210 |
check(3,"s"); |
211 |
if (traincl != 0) { |
212 |
traincl = 0; |
213 |
tralp = tralist; |
214 |
} |
215 |
if (argv[i][2] == 'E') { /* file */ |
216 |
rval = wordfile(tralp, MAXMODLIST-(tralp-tralist), |
217 |
getpath(argv[++i],getrlibpath(),R_OK)); |
218 |
if (rval < 0) { |
219 |
sprintf(errmsg, |
220 |
"cannot open trace exclude file \"%s\"", |
221 |
argv[i]); |
222 |
error(SYSTEM, errmsg); |
223 |
} |
224 |
tralp += rval; |
225 |
} else { |
226 |
*tralp++ = argv[++i]; |
227 |
*tralp = NULL; |
228 |
} |
229 |
break; |
230 |
default: |
231 |
goto badopt; |
232 |
} |
233 |
break; |
234 |
#ifdef PERSIST |
235 |
case 'P': /* persist file */ |
236 |
if (argv[i][2] == 'P') { |
237 |
check(3,"s"); |
238 |
persist = PARALLEL; |
239 |
} else { |
240 |
check(2,"s"); |
241 |
persist = PERSIST; |
242 |
} |
243 |
persistfile(argv[++i]); |
244 |
break; |
245 |
#endif |
246 |
default: |
247 |
goto badopt; |
248 |
} |
249 |
} |
250 |
if (nproc > 1) { |
251 |
if (persist) |
252 |
error(USER, "multiprocessing incompatible with persist file"); |
253 |
if (!vresolu && hresolu > 0 && hresolu < nproc) |
254 |
error(WARNING, "number of cores should not exceed horizontal resolution"); |
255 |
if (trace != NULL) |
256 |
error(WARNING, "multiprocessing does not work properly with trace mode"); |
257 |
} |
258 |
/* initialize object types */ |
259 |
initotypes(); |
260 |
/* initialize urand */ |
261 |
if (rand_samp) { |
262 |
srandom((long)time(0)); |
263 |
initurand(0); |
264 |
} else { |
265 |
srandom(0L); |
266 |
initurand(2048); |
267 |
} |
268 |
/* set up signal handling */ |
269 |
sigdie(SIGINT, "Interrupt"); |
270 |
#ifdef SIGHUP |
271 |
sigdie(SIGHUP, "Hangup"); |
272 |
#endif |
273 |
sigdie(SIGTERM, "Terminate"); |
274 |
#ifdef SIGPIPE |
275 |
sigdie(SIGPIPE, "Broken pipe"); |
276 |
#endif |
277 |
#ifdef SIGALRM |
278 |
sigdie(SIGALRM, "Alarm clock"); |
279 |
#endif |
280 |
#ifdef SIGXCPU |
281 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
282 |
sigdie(SIGXFSZ, "File size exceeded"); |
283 |
#endif |
284 |
/* open error file */ |
285 |
if (errfile != NULL) { |
286 |
if (freopen(errfile, "a", stderr) == NULL) |
287 |
quit(2); |
288 |
fprintf(stderr, "**************\n*** PID %5d: ", |
289 |
getpid()); |
290 |
printargs(argc, argv, stderr); |
291 |
putc('\n', stderr); |
292 |
fflush(stderr); |
293 |
} |
294 |
#ifdef NICE |
295 |
nice(NICE); /* lower priority */ |
296 |
#endif |
297 |
/* get octree */ |
298 |
if (i == argc) |
299 |
octnm = NULL; |
300 |
else if (i == argc-1) |
301 |
octnm = argv[i]; |
302 |
else |
303 |
goto badopt; |
304 |
if (octnm == NULL) |
305 |
error(USER, "missing octree argument"); |
306 |
/* set up output */ |
307 |
#ifdef PERSIST |
308 |
if (persist) { |
309 |
duped1 = dup(fileno(stdout)); /* don't lose our output */ |
310 |
openheader(); |
311 |
} |
312 |
#endif |
313 |
if (outform != 'a') |
314 |
SET_FILE_BINARY(stdout); |
315 |
readoct(octname = octnm, loadflags, &thescene, NULL); |
316 |
nsceneobjs = nobjects; |
317 |
|
318 |
if (loadflags & IO_INFO) { /* print header */ |
319 |
printargs(i, argv, stdout); |
320 |
printf("SOFTWARE= %s\n", VersionID); |
321 |
fputnow(stdout); |
322 |
if ((outform == 'f') | (outform == 'd')) |
323 |
fputendian(stdout); |
324 |
fputformat(formstr(outform), stdout); |
325 |
putchar('\n'); |
326 |
} |
327 |
|
328 |
ray_init_pmap(); /* PMAP: set up & load photon maps */ |
329 |
|
330 |
marksources(); /* find and mark sources */ |
331 |
|
332 |
setambient(); /* initialize ambient calculation */ |
333 |
|
334 |
#ifdef PERSIST |
335 |
if (persist) { |
336 |
fflush(stdout); |
337 |
/* reconnect stdout */ |
338 |
dup2(duped1, fileno(stdout)); |
339 |
close(duped1); |
340 |
if (persist == PARALLEL) { /* multiprocessing */ |
341 |
preload_objs(); /* preload scene */ |
342 |
shm_boundary = (char *)malloc(16); |
343 |
strcpy(shm_boundary, "SHM_BOUNDARY"); |
344 |
while ((rval=fork()) == 0) { /* keep on forkin' */ |
345 |
pflock(1); |
346 |
pfhold(); |
347 |
ambsync(); /* load new values */ |
348 |
} |
349 |
if (rval < 0) |
350 |
error(SYSTEM, "cannot fork child for persist function"); |
351 |
pfdetach(); /* parent will run then exit */ |
352 |
} |
353 |
} |
354 |
runagain: |
355 |
if (persist) |
356 |
dupheader(); /* send header to stdout */ |
357 |
#endif |
358 |
/* trace rays */ |
359 |
rtrace(NULL, nproc); |
360 |
/* flush ambient file */ |
361 |
ambsync(); |
362 |
#ifdef PERSIST |
363 |
if (persist == PERSIST) { /* first run-through */ |
364 |
if ((rval=fork()) == 0) { /* child loops until killed */ |
365 |
pflock(1); |
366 |
persist = PCHILD; |
367 |
} else { /* original process exits */ |
368 |
if (rval < 0) |
369 |
error(SYSTEM, "cannot fork child for persist function"); |
370 |
pfdetach(); /* parent exits */ |
371 |
} |
372 |
} |
373 |
if (persist == PCHILD) { /* wait for a signal then go again */ |
374 |
pfhold(); |
375 |
raynum = nrays = 0; /* reinitialize */ |
376 |
goto runagain; |
377 |
} |
378 |
#endif |
379 |
|
380 |
ray_done_pmap(); /* PMAP: free photon maps */ |
381 |
|
382 |
quit(0); |
383 |
|
384 |
badopt: |
385 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
386 |
error(USER, errmsg); |
387 |
return 1; /* pro forma return */ |
388 |
|
389 |
#undef check |
390 |
#undef check_bool |
391 |
} |
392 |
|
393 |
|
394 |
void |
395 |
wputs( /* warning output function */ |
396 |
char *s |
397 |
) |
398 |
{ |
399 |
int lasterrno = errno; |
400 |
eputs(s); |
401 |
errno = lasterrno; |
402 |
} |
403 |
|
404 |
|
405 |
void |
406 |
eputs( /* put string to stderr */ |
407 |
register char *s |
408 |
) |
409 |
{ |
410 |
static int midline = 0; |
411 |
|
412 |
if (!*s) |
413 |
return; |
414 |
if (!midline++) { |
415 |
fputs(progname, stderr); |
416 |
fputs(": ", stderr); |
417 |
} |
418 |
fputs(s, stderr); |
419 |
if (s[strlen(s)-1] == '\n') { |
420 |
fflush(stderr); |
421 |
midline = 0; |
422 |
} |
423 |
} |
424 |
|
425 |
|
426 |
static void |
427 |
onsig( /* fatal signal */ |
428 |
int signo |
429 |
) |
430 |
{ |
431 |
static int gotsig = 0; |
432 |
|
433 |
if (gotsig++) /* two signals and we're gone! */ |
434 |
_exit(signo); |
435 |
|
436 |
#ifdef SIGALRM |
437 |
alarm(15); /* allow 15 seconds to clean up */ |
438 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
439 |
#endif |
440 |
eputs("signal - "); |
441 |
eputs(sigerr[signo]); |
442 |
eputs("\n"); |
443 |
quit(3); |
444 |
} |
445 |
|
446 |
|
447 |
static void |
448 |
sigdie( /* set fatal signal */ |
449 |
int signo, |
450 |
char *msg |
451 |
) |
452 |
{ |
453 |
if (signal(signo, onsig) == SIG_IGN) |
454 |
signal(signo, SIG_IGN); |
455 |
sigerr[signo] = msg; |
456 |
} |
457 |
|
458 |
|
459 |
static void |
460 |
printdefaults(void) /* print default values to stdout */ |
461 |
{ |
462 |
register char *cp; |
463 |
|
464 |
if (imm_irrad) |
465 |
printf("-I+\t\t\t\t# immediate irradiance on\n"); |
466 |
printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc); |
467 |
printf("-x %-9d\t\t\t# %s\n", hresolu, |
468 |
vresolu && hresolu ? "x resolution" : "flush interval"); |
469 |
printf("-y %-9d\t\t\t# y resolution\n", vresolu); |
470 |
printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
471 |
"-ld-\t\t\t\t# limit distance off\n"); |
472 |
printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-', |
473 |
loadflags & IO_INFO ? "output" : "no"); |
474 |
printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
475 |
inform, outform, formstr(inform), formstr(outform)); |
476 |
printf("-o%-9s\t\t\t# output", outvals); |
477 |
for (cp = outvals; *cp; cp++) |
478 |
switch (*cp) { |
479 |
case 't': case 'T': printf(" trace"); break; |
480 |
case 'o': printf(" origin"); break; |
481 |
case 'd': printf(" direction"); break; |
482 |
case 'r': printf(" reflect_contrib"); break; |
483 |
case 'R': printf(" reflect_length"); break; |
484 |
case 'x': printf(" unreflect_contrib"); break; |
485 |
case 'X': printf(" unreflect_length"); break; |
486 |
case 'v': printf(" value"); break; |
487 |
case 'V': printf(" contribution"); break; |
488 |
case 'l': printf(" length"); break; |
489 |
case 'L': printf(" first_length"); break; |
490 |
case 'p': printf(" point"); break; |
491 |
case 'n': printf(" normal"); break; |
492 |
case 'N': printf(" unperturbed_normal"); break; |
493 |
case 's': printf(" surface"); break; |
494 |
case 'w': printf(" weight"); break; |
495 |
case 'W': printf(" coefficient"); break; |
496 |
case 'm': printf(" modifier"); break; |
497 |
case 'M': printf(" material"); break; |
498 |
case '-': printf(" stroke"); break; |
499 |
} |
500 |
putchar('\n'); |
501 |
printf(erract[WARNING].pf != NULL ? |
502 |
"-w+\t\t\t\t# warning messages on\n" : |
503 |
"-w-\t\t\t\t# warning messages off\n"); |
504 |
print_rdefaults(); |
505 |
} |