1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: rtcontrib.c,v 1.8 2005/05/31 18:01:09 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* Gather rtrace output to compute contributions from particular sources |
6 |
*/ |
7 |
|
8 |
#include "standard.h" |
9 |
#include <ctype.h> |
10 |
#include <signal.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 |
#define MAXMODLIST 1024 /* maximum modifiers we'll track */ |
20 |
|
21 |
int treebufsiz = BUFSIZ; /* current tree buffer size */ |
22 |
|
23 |
typedef double DCOLOR[3]; /* double-precision color */ |
24 |
|
25 |
/* |
26 |
* The modcont structure is used to accumulate ray contributions |
27 |
* for a particular modifier, which may be subdivided into bins |
28 |
* if binv is non-NULL. If outspec contains a %s in it, this will |
29 |
* be replaced with the modifier name. If outspec contains a %d in it, |
30 |
* this will be used to create one output file per bin, otherwise all bins |
31 |
* will be written to the same file, in order. If the global outfmt |
32 |
* is 'c', then a 4-byte RGBE pixel will be output for each bin value |
33 |
* and the file will conform to a RADIANCE image if xres & yres are set. |
34 |
*/ |
35 |
typedef struct { |
36 |
const char *outspec; /* output file specification */ |
37 |
const char *modname; /* modifier name */ |
38 |
EPNODE *binv; /* bin value expression */ |
39 |
int nbins; /* number of accumulation bins */ |
40 |
DCOLOR cbin[1]; /* contribution bins (extends struct) */ |
41 |
} MODCONT; /* modifier contribution */ |
42 |
|
43 |
static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); } |
44 |
|
45 |
LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */ |
46 |
|
47 |
/* close output stream */ |
48 |
static void closefile(void *p) { fclose((FILE *)p); } |
49 |
|
50 |
LUTAB ofiletab = LU_SINIT(free,closefile); /* output file table */ |
51 |
|
52 |
FILE *getofile(const char *ospec, const char *mname, int bn); |
53 |
|
54 |
/* |
55 |
* The rcont structure is used to manage i/o with a particular |
56 |
* rtrace child process. Input is passed unchanged from stdin, |
57 |
* and output is processed in input order and accumulated according |
58 |
* to the corresponding modifier and bin number. |
59 |
*/ |
60 |
struct rtproc { |
61 |
struct rtproc *next; /* next in list of processes */ |
62 |
SUBPROC pd; /* rtrace pipe descriptors */ |
63 |
unsigned long raynum; /* ray number for this tree */ |
64 |
int bsiz; /* ray tree buffer length */ |
65 |
char *buf; /* ray tree buffer */ |
66 |
int nbr; /* number of bytes from rtrace */ |
67 |
}; /* rtrace process buffer */ |
68 |
|
69 |
/* rtrace command and defaults */ |
70 |
char *rtargv[256] = { "rtrace", "-dj", ".5", "-dr", "3", |
71 |
"-ab", "1", "-ad", "128", "-lr", "-10", }; |
72 |
int rtargc = 11; |
73 |
/* overriding rtrace options */ |
74 |
char *myrtopts[] = { "-o~~TmWdp", "-h-", "-x", "1", "-y", "0", |
75 |
"-dt", "0", "-as", "0", "-aa", "0", NULL }; |
76 |
|
77 |
struct rtproc rt0; /* head of rtrace process list */ |
78 |
|
79 |
struct rtproc *rt_unproc = NULL; /* unprocessed ray trees */ |
80 |
|
81 |
char persistfn[] = "pfXXXXXX"; /* persist file name */ |
82 |
|
83 |
int gargc; /* global argc */ |
84 |
char **gargv; /* global argv */ |
85 |
#define progname gargv[0] |
86 |
|
87 |
char *octree; /* global octree argument */ |
88 |
|
89 |
int inpfmt = 'a'; /* input format */ |
90 |
int outfmt = 'a'; /* output format */ |
91 |
|
92 |
int header = 1; /* output header? */ |
93 |
int xres = 0; /* horiz. output resolution */ |
94 |
int yres = 0; /* vert. output resolution */ |
95 |
|
96 |
long raysleft; /* number of rays left to trace */ |
97 |
long waitflush; /* how long until next flush */ |
98 |
|
99 |
unsigned long lastray = 0; /* last ray number sent */ |
100 |
unsigned long lastdone = 0; /* last ray processed */ |
101 |
|
102 |
int using_stdout = 0; /* are we using stdout? */ |
103 |
|
104 |
const char *modname[MAXMODLIST]; /* ordered modifier name list */ |
105 |
int nmods = 0; /* number of modifiers */ |
106 |
|
107 |
MODCONT *addmodifier(char *modn, char *outf, char *binv); |
108 |
|
109 |
void init(int np); |
110 |
int done_rprocs(struct rtproc *rtp); |
111 |
void trace_contribs(FILE *fp); |
112 |
struct rtproc *wait_rproc(void); |
113 |
struct rtproc *get_rproc(void); |
114 |
void queue_raytree(struct rtproc *rtp); |
115 |
void process_queue(void); |
116 |
|
117 |
void putcontrib(const DCOLOR cnt, FILE *fout); |
118 |
void add_contrib(const char *modn); |
119 |
void done_contrib(void); |
120 |
|
121 |
/* set input/output format */ |
122 |
static void |
123 |
setformat(const char *fmt) |
124 |
{ |
125 |
switch (fmt[0]) { |
126 |
case 'a': |
127 |
case 'f': |
128 |
case 'd': |
129 |
inpfmt = fmt[0]; |
130 |
break; |
131 |
default: |
132 |
goto fmterr; |
133 |
} |
134 |
switch (fmt[1]) { |
135 |
case '\0': |
136 |
outfmt = inpfmt; |
137 |
return; |
138 |
case 'a': |
139 |
case 'f': |
140 |
case 'd': |
141 |
case 'c': |
142 |
outfmt = fmt[1]; |
143 |
break; |
144 |
default: |
145 |
goto fmterr; |
146 |
} |
147 |
if (!fmt[2]) |
148 |
return; |
149 |
fmterr: |
150 |
sprintf(errmsg, "Illegal i/o format: -f%s", fmt); |
151 |
error(USER, errmsg); |
152 |
} |
153 |
|
154 |
/* gather rays from rtrace and output contributions */ |
155 |
int |
156 |
main(int argc, char *argv[]) |
157 |
{ |
158 |
int nprocs = 1; |
159 |
char *curout = NULL; |
160 |
char *binval = NULL; |
161 |
char fmt[8]; |
162 |
int i, j; |
163 |
/* global program name */ |
164 |
gargv = argv; |
165 |
/* set up calcomp mode */ |
166 |
esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW; |
167 |
esupport &= ~(E_OUTCHAN); |
168 |
/* get our options */ |
169 |
for (i = 1; i < argc-1; i++) { |
170 |
/* expand arguments */ |
171 |
while ((j = expandarg(&argc, &argv, i)) > 0) |
172 |
; |
173 |
if (j < 0) { |
174 |
fprintf(stderr, "%s: cannot expand '%s'", |
175 |
argv[0], argv[i]); |
176 |
exit(1); |
177 |
} |
178 |
if (argv[i][0] == '-') |
179 |
switch (argv[i][1]) { |
180 |
case 'n': /* number of processes */ |
181 |
if (argv[i][2] || i >= argc-1) break; |
182 |
nprocs = atoi(argv[++i]); |
183 |
if (nprocs <= 0) |
184 |
error(USER, "illegal number of processes"); |
185 |
continue; |
186 |
case 'h': /* output header? */ |
187 |
switch (argv[i][2]) { |
188 |
case '\0': |
189 |
header = !header; |
190 |
continue; |
191 |
case '+': case '1': |
192 |
case 'T': case 't': |
193 |
case 'Y': case 'y': |
194 |
header = 1; |
195 |
continue; |
196 |
case '-': case '0': |
197 |
case 'F': case 'f': |
198 |
case 'N': case 'n': |
199 |
header = 0; |
200 |
continue; |
201 |
} |
202 |
break; |
203 |
case 'f': /* file or i/o format */ |
204 |
if (!argv[i][2]) { |
205 |
char *fpath; |
206 |
if (i >= argc-1) break; |
207 |
fpath = getpath(argv[++i], |
208 |
getrlibpath(), R_OK); |
209 |
if (fpath == NULL) { |
210 |
sprintf(errmsg, |
211 |
"cannot find file '%s'", |
212 |
argv[i]); |
213 |
error(USER, errmsg); |
214 |
} |
215 |
fcompile(fpath); |
216 |
continue; |
217 |
} |
218 |
setformat(argv[i]+2); |
219 |
continue; |
220 |
case 'e': /* expression */ |
221 |
if (argv[i][2] || i >= argc-1) break; |
222 |
scompile(argv[++i], NULL, 0); |
223 |
continue; |
224 |
case 'o': /* output file spec. */ |
225 |
if (argv[i][2] || i >= argc-1) break; |
226 |
curout = argv[++i]; |
227 |
continue; |
228 |
case 'x': /* horiz. output resolution */ |
229 |
if (argv[i][2] || i >= argc-1) break; |
230 |
xres = atoi(argv[++i]); |
231 |
continue; |
232 |
case 'y': /* vert. output resolution */ |
233 |
if (argv[i][2] || i >= argc-1) break; |
234 |
yres = atoi(argv[++i]); |
235 |
continue; |
236 |
case 'b': /* bin expression */ |
237 |
if (argv[i][2] || i >= argc-1) break; |
238 |
binval = argv[++i]; |
239 |
continue; |
240 |
case 'm': /* modifier name */ |
241 |
if (argv[i][2] || i >= argc-1) break; |
242 |
rtargv[rtargc++] = "-ti"; |
243 |
rtargv[rtargc++] = argv[++i]; |
244 |
addmodifier(argv[i], curout, binval); |
245 |
continue; |
246 |
} |
247 |
rtargv[rtargc++] = argv[i]; /* assume rtrace option */ |
248 |
} |
249 |
/* set global argument list */ |
250 |
gargc = argc; gargv = argv; |
251 |
/* add "mandatory" rtrace settings */ |
252 |
for (j = 0; myrtopts[j] != NULL; j++) |
253 |
rtargv[rtargc++] = myrtopts[j]; |
254 |
/* just asking for defaults? */ |
255 |
if (!strcmp(argv[i], "-defaults")) { |
256 |
char sxres[16], syres[16]; |
257 |
char *rtpath; |
258 |
printf("-n %-2d\t\t\t\t# number of processes\n", nprocs); |
259 |
fflush(stdout); /* report OUR options */ |
260 |
rtargv[rtargc++] = header ? "-h+" : "-h-"; |
261 |
sprintf(fmt, "-f%c%c", inpfmt, outfmt); |
262 |
rtargv[rtargc++] = fmt; |
263 |
rtargv[rtargc++] = "-x"; |
264 |
sprintf(sxres, "%d", xres); |
265 |
rtargv[rtargc++] = sxres; |
266 |
rtargv[rtargc++] = "-y"; |
267 |
sprintf(syres, "%d", yres); |
268 |
rtargv[rtargc++] = syres; |
269 |
rtargv[rtargc++] = "-oTW"; |
270 |
rtargv[rtargc++] = "-defaults"; |
271 |
rtargv[rtargc] = NULL; |
272 |
rtpath = getpath(rtargv[0], getenv("PATH"), X_OK); |
273 |
if (rtpath == NULL) { |
274 |
eputs(rtargv[0]); |
275 |
eputs(": command not found\n"); |
276 |
exit(1); |
277 |
} |
278 |
execv(rtpath, rtargv); |
279 |
perror(rtpath); /* execv() should not return */ |
280 |
exit(1); |
281 |
} |
282 |
if (nprocs > 1) { /* add persist file if parallel */ |
283 |
rtargv[rtargc++] = "-PP"; |
284 |
rtargv[rtargc++] = mktemp(persistfn); |
285 |
} |
286 |
/* add format string */ |
287 |
sprintf(fmt, "-f%cf", inpfmt); |
288 |
rtargv[rtargc++] = fmt; |
289 |
/* octree argument is last */ |
290 |
if (i <= 0 || i != argc-1 || argv[i][0] == '-') |
291 |
error(USER, "missing octree argument"); |
292 |
rtargv[rtargc++] = octree = argv[i]; |
293 |
rtargv[rtargc] = NULL; |
294 |
/* start rtrace & compute contributions */ |
295 |
init(nprocs); |
296 |
trace_contribs(stdin); |
297 |
quit(0); |
298 |
} |
299 |
|
300 |
/* kill persistent rtrace process */ |
301 |
static void |
302 |
killpersist(void) |
303 |
{ |
304 |
FILE *fp = fopen(persistfn, "r"); |
305 |
int pid; |
306 |
|
307 |
if (fp == NULL) |
308 |
return; |
309 |
if (fscanf(fp, "%*s %d", &pid) != 1 || kill(pid, SIGALRM) < 0) |
310 |
unlink(persistfn); |
311 |
fclose(fp); |
312 |
} |
313 |
|
314 |
/* close rtrace processes and clean up */ |
315 |
int |
316 |
done_rprocs(struct rtproc *rtp) |
317 |
{ |
318 |
int st0, st1 = 0; |
319 |
|
320 |
if (rtp->next != NULL) { /* close last opened first! */ |
321 |
st1 = done_rprocs(rtp->next); |
322 |
free((void *)rtp->next); |
323 |
rtp->next = NULL; |
324 |
} |
325 |
st0 = close_process(&rtp->pd); |
326 |
if (st0 < 0) |
327 |
error(WARNING, "unknown return status from rtrace process"); |
328 |
else if (st0 > 0) |
329 |
return(st0); |
330 |
return(st1); |
331 |
} |
332 |
|
333 |
/* exit with status */ |
334 |
void |
335 |
quit(int status) |
336 |
{ |
337 |
int rtstat; |
338 |
|
339 |
if (rt0.next != NULL) /* terminate persistent rtrace */ |
340 |
killpersist(); |
341 |
/* clean up rtrace process(es) */ |
342 |
rtstat = done_rprocs(&rt0); |
343 |
if (status == 0) |
344 |
status = rtstat; |
345 |
exit(status); /* flushes all output streams */ |
346 |
} |
347 |
|
348 |
/* start rtrace processes and initialize */ |
349 |
void |
350 |
init(int np) |
351 |
{ |
352 |
struct rtproc *rtp; |
353 |
int i; |
354 |
int maxbytes; |
355 |
/* make sure we have something to do */ |
356 |
if (!nmods) |
357 |
error(USER, "No modifiers specified"); |
358 |
/* assign ray variables */ |
359 |
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
360 |
scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0); |
361 |
/* set up signal handling */ |
362 |
signal(SIGINT, quit); |
363 |
#ifdef SIGHUP |
364 |
signal(SIGHUP, quit); |
365 |
#endif |
366 |
#ifdef SIGTERM |
367 |
signal(SIGTERM, quit); |
368 |
#endif |
369 |
#ifdef SIGPIPE |
370 |
signal(SIGPIPE, quit); |
371 |
#endif |
372 |
rtp = &rt0; /* start rtrace process(es) */ |
373 |
for (i = 0; i++ < np; ) { |
374 |
errno = 0; |
375 |
maxbytes = open_process(&rtp->pd, rtargv); |
376 |
if (maxbytes == 0) { |
377 |
eputs(rtargv[0]); |
378 |
eputs(": command not found\n"); |
379 |
exit(1); |
380 |
} |
381 |
if (maxbytes < 0) |
382 |
error(SYSTEM, "cannot start rtrace process"); |
383 |
if (maxbytes > treebufsiz) |
384 |
treebufsiz = maxbytes; |
385 |
rtp->raynum = 0; |
386 |
rtp->bsiz = 0; |
387 |
rtp->buf = NULL; |
388 |
rtp->nbr = 0; |
389 |
if (i == np) /* last process? */ |
390 |
break; |
391 |
if (i == 1) |
392 |
sleep(2); /* wait for persist file */ |
393 |
rtp->next = (struct rtproc *)malloc(sizeof(struct rtproc)); |
394 |
if (rtp->next == NULL) |
395 |
error(SYSTEM, "out of memory in init"); |
396 |
rtp = rtp->next; |
397 |
} |
398 |
rtp->next = NULL; /* terminate list */ |
399 |
if (yres > 0) { |
400 |
if (xres > 0) |
401 |
raysleft = xres*yres; |
402 |
else |
403 |
raysleft = yres; |
404 |
} else |
405 |
raysleft = 0; |
406 |
waitflush = xres; |
407 |
} |
408 |
|
409 |
/* add modifier to our list to track */ |
410 |
MODCONT * |
411 |
addmodifier(char *modn, char *outf, char *binv) |
412 |
{ |
413 |
LUENT *lep = lu_find(&modconttab, modn); |
414 |
MODCONT *mp; |
415 |
|
416 |
if (lep->data != NULL) { |
417 |
sprintf(errmsg, "duplicate modifier '%s'", modn); |
418 |
error(USER, errmsg); |
419 |
} |
420 |
if (nmods >= MAXMODLIST) |
421 |
error(USER, "too many modifiers"); |
422 |
modname[nmods++] = modn; /* XXX assumes static string */ |
423 |
lep->key = modn; /* XXX assumes static string */ |
424 |
mp = (MODCONT *)malloc(sizeof(MODCONT)); |
425 |
if (mp == NULL) |
426 |
error(SYSTEM, "out of memory in addmodifier"); |
427 |
lep->data = (char *)mp; |
428 |
mp->outspec = outf; /* XXX assumes static string */ |
429 |
mp->modname = modn; /* XXX assumes static string */ |
430 |
if (binv != NULL) |
431 |
mp->binv = eparse(binv); |
432 |
else |
433 |
mp->binv = eparse("0"); |
434 |
mp->nbins = 1; |
435 |
setcolor(mp->cbin[0], 0., 0., 0.); |
436 |
return mp; |
437 |
} |
438 |
|
439 |
/* put string to stderr */ |
440 |
void |
441 |
eputs(char *s) |
442 |
{ |
443 |
static int midline = 0; |
444 |
|
445 |
if (!*s) return; |
446 |
if (!midline) { |
447 |
fputs(progname, stderr); |
448 |
fputs(": ", stderr); |
449 |
} |
450 |
fputs(s, stderr); |
451 |
midline = s[strlen(s)-1] != '\n'; |
452 |
} |
453 |
|
454 |
/* write header to the given output stream */ |
455 |
void |
456 |
printheader(FILE *fout) |
457 |
{ |
458 |
extern char VersionID[]; |
459 |
FILE *fin = fopen(octree, "r"); |
460 |
|
461 |
if (fin == NULL) |
462 |
quit(1); |
463 |
checkheader(fin, "ignore", fout); /* copy octree header */ |
464 |
fclose(fin); |
465 |
printargs(gargc-1, gargv, fout); /* add our command */ |
466 |
fprintf(fout, "SOFTWARE= %s\n", VersionID); |
467 |
fputnow(fout); |
468 |
switch (outfmt) { /* add output format */ |
469 |
case 'a': |
470 |
fputformat("ascii", fout); |
471 |
break; |
472 |
case 'f': |
473 |
fputformat("float", fout); |
474 |
break; |
475 |
case 'd': |
476 |
fputformat("double", fout); |
477 |
break; |
478 |
case 'c': |
479 |
fputformat(COLRFMT, fout); |
480 |
break; |
481 |
} |
482 |
fputc('\n', fout); |
483 |
if (xres > 0) { |
484 |
if (yres > 0) /* resolution string */ |
485 |
fprtresolu(xres, yres, fout); |
486 |
fflush(fout); |
487 |
} |
488 |
} |
489 |
|
490 |
/* Get output file pointer (open and write header if new) */ |
491 |
FILE * |
492 |
getofile(const char *ospec, const char *mname, int bn) |
493 |
{ |
494 |
const char *mnp = NULL; |
495 |
const char *bnp = NULL; |
496 |
const char *cp; |
497 |
char ofname[1024]; |
498 |
LUENT *lep; |
499 |
|
500 |
if (ospec == NULL) { /* use stdout? */ |
501 |
if (!using_stdout && header) |
502 |
printheader(stdout); |
503 |
using_stdout = 1; |
504 |
return stdout; |
505 |
} |
506 |
for (cp = ospec; *cp; cp++) /* check format position(s) */ |
507 |
if (*cp == '%') { |
508 |
do |
509 |
++cp; |
510 |
while (isdigit(*cp)); |
511 |
switch (*cp) { |
512 |
case '%': |
513 |
break; |
514 |
case 's': |
515 |
if (mnp != NULL) |
516 |
goto badspec; |
517 |
mnp = cp; |
518 |
break; |
519 |
case 'd': |
520 |
if (bnp != NULL) |
521 |
goto badspec; |
522 |
bnp = cp; |
523 |
break; |
524 |
default: |
525 |
goto badspec; |
526 |
} |
527 |
} |
528 |
if (mnp != NULL) { /* create file name */ |
529 |
if (bnp != NULL) { |
530 |
if (bnp > mnp) |
531 |
sprintf(ofname, ospec, mname, bn); |
532 |
else |
533 |
sprintf(ofname, ospec, bn, mname); |
534 |
} else |
535 |
sprintf(ofname, ospec, mname); |
536 |
} else if (bnp != NULL) |
537 |
sprintf(ofname, ospec, bn); |
538 |
else |
539 |
strcpy(ofname, ospec); |
540 |
lep = lu_find(&ofiletab, ofname); /* look it up */ |
541 |
if (lep->key == NULL) /* new entry */ |
542 |
lep->key = strcpy((char *)malloc(strlen(ofname)+1), ofname); |
543 |
if (lep->data == NULL) { /* open output file */ |
544 |
FILE *fp = fopen(ofname, "w"); |
545 |
int i; |
546 |
if (fp == NULL) { |
547 |
sprintf(errmsg, "cannot open '%s' for writing", ofname); |
548 |
error(SYSTEM, errmsg); |
549 |
} |
550 |
if (header) |
551 |
printheader(fp); |
552 |
/* play catch-up */ |
553 |
for (i = 0; i < lastdone; i++) { |
554 |
static const DCOLOR nocontrib = BLKCOLOR; |
555 |
putcontrib(nocontrib, fp); |
556 |
if (outfmt == 'a') |
557 |
putc('\n', fp); |
558 |
} |
559 |
if (xres > 0) |
560 |
fflush(fp); |
561 |
lep->data = (char *)fp; |
562 |
} |
563 |
return (FILE *)lep->data; /* return open file pointer */ |
564 |
badspec: |
565 |
sprintf(errmsg, "bad output format '%s'", ospec); |
566 |
error(USER, errmsg); |
567 |
return NULL; /* pro forma return */ |
568 |
} |
569 |
|
570 |
/* read input ray into buffer */ |
571 |
int |
572 |
getinp(char *buf, FILE *fp) |
573 |
{ |
574 |
char *cp; |
575 |
int i; |
576 |
|
577 |
switch (inpfmt) { |
578 |
case 'a': |
579 |
cp = buf; /* make sure we get 6 floats */ |
580 |
for (i = 0; i < 6; i++) { |
581 |
if (fgetword(cp, buf+127-cp, fp) == NULL) |
582 |
return 0; |
583 |
if ((cp = fskip(cp)) == NULL || *cp) |
584 |
return 0; |
585 |
*cp++ = ' '; |
586 |
} |
587 |
getc(fp); /* get/put eol */ |
588 |
*cp-- = '\0'; *cp = '\n'; |
589 |
return strlen(buf); |
590 |
case 'f': |
591 |
if (fread(buf, sizeof(float), 6, fp) < 6) |
592 |
return 0; |
593 |
return sizeof(float)*6; |
594 |
case 'd': |
595 |
if (fread(buf, sizeof(double), 6, fp) < 6) |
596 |
return 0; |
597 |
return sizeof(double)*6; |
598 |
} |
599 |
error(INTERNAL, "botched input format"); |
600 |
return 0; /* pro forma return */ |
601 |
} |
602 |
|
603 |
static float rparams[9]; /* traced ray parameters */ |
604 |
|
605 |
/* return channel (ray) value */ |
606 |
double |
607 |
chanvalue(int n) |
608 |
{ |
609 |
if (--n < 0 || n >= 6) |
610 |
error(USER, "illegal channel number ($N)"); |
611 |
return rparams[n+3]; |
612 |
} |
613 |
|
614 |
/* add current ray contribution to the appropriate modifier bin */ |
615 |
void |
616 |
add_contrib(const char *modn) |
617 |
{ |
618 |
LUENT *le = lu_find(&modconttab, modn); |
619 |
MODCONT *mp = (MODCONT *)le->data; |
620 |
int bn; |
621 |
|
622 |
if (mp == NULL) { |
623 |
sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn); |
624 |
error(USER, errmsg); |
625 |
} |
626 |
eclock++; /* get bin number */ |
627 |
bn = (int)(evalue(mp->binv) + .5); |
628 |
if (bn <= 0) |
629 |
bn = 0; |
630 |
else if (bn > mp->nbins) { /* new bin */ |
631 |
mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + |
632 |
bn*sizeof(DCOLOR)); |
633 |
if (mp == NULL) |
634 |
error(SYSTEM, "out of memory in add_contrib"); |
635 |
memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(bn+1-mp->nbins)); |
636 |
mp->nbins = bn+1; |
637 |
le->data = (char *)mp; |
638 |
} |
639 |
addcolor(mp->cbin[bn], rparams); |
640 |
} |
641 |
|
642 |
/* output newline to ASCII file and/or flush as requested */ |
643 |
static int |
644 |
puteol(const LUENT *e, void *p) |
645 |
{ |
646 |
FILE *fp = (FILE *)e->data; |
647 |
|
648 |
if (outfmt == 'a') |
649 |
putc('\n', fp); |
650 |
if (!waitflush) |
651 |
fflush(fp); |
652 |
if (ferror(fp)) { |
653 |
sprintf(errmsg, "write error on file '%s'", e->key); |
654 |
error(SYSTEM, errmsg); |
655 |
} |
656 |
return 0; |
657 |
} |
658 |
|
659 |
/* put out ray contribution to file */ |
660 |
void |
661 |
putcontrib(const DCOLOR cnt, FILE *fout) |
662 |
{ |
663 |
float fv[3]; |
664 |
COLR cv; |
665 |
|
666 |
switch (outfmt) { |
667 |
case 'a': |
668 |
fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]); |
669 |
break; |
670 |
case 'f': |
671 |
fv[0] = cnt[0]; |
672 |
fv[1] = cnt[1]; |
673 |
fv[2] = cnt[2]; |
674 |
fwrite(fv, sizeof(float), 3, fout); |
675 |
break; |
676 |
case 'd': |
677 |
fwrite(cnt, sizeof(double), 3, fout); |
678 |
break; |
679 |
case 'c': |
680 |
setcolr(cv, cnt[0], cnt[1], cnt[2]); |
681 |
fwrite(cv, sizeof(cv), 1, fout); |
682 |
break; |
683 |
default: |
684 |
error(INTERNAL, "botched output format"); |
685 |
} |
686 |
} |
687 |
|
688 |
/* output ray tallies and clear for next primary */ |
689 |
void |
690 |
done_contrib(void) |
691 |
{ |
692 |
int i, j; |
693 |
MODCONT *mp; |
694 |
/* output modifiers in order */ |
695 |
for (i = 0; i < nmods; i++) { |
696 |
mp = (MODCONT *)lu_find(&modconttab,modname[i])->data; |
697 |
for (j = 0; j < mp->nbins; j++) |
698 |
putcontrib(mp->cbin[j], |
699 |
getofile(mp->outspec, mp->modname, j)); |
700 |
/* clear for next ray tree */ |
701 |
memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins); |
702 |
} |
703 |
--waitflush; /* terminate records */ |
704 |
lu_doall(&ofiletab, puteol, NULL); |
705 |
if (using_stdout & (outfmt == 'a')) |
706 |
putc('\n', stdout); |
707 |
if (!waitflush) { |
708 |
waitflush = xres; |
709 |
if (using_stdout) |
710 |
fflush(stdout); |
711 |
} |
712 |
} |
713 |
|
714 |
/* queue completed ray tree produced by rtrace process */ |
715 |
void |
716 |
queue_raytree(struct rtproc *rtp) |
717 |
{ |
718 |
struct rtproc *rtu, *rtl = NULL; |
719 |
/* insert following ray order */ |
720 |
for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next) |
721 |
if (rtp->raynum < rtu->raynum) |
722 |
break; |
723 |
rtu = (struct rtproc *)malloc(sizeof(struct rtproc)); |
724 |
if (rtu == NULL) |
725 |
error(SYSTEM, "out of memory in queue_raytree"); |
726 |
*rtu = *rtp; |
727 |
if (rtl == NULL) { |
728 |
rtu->next = rt_unproc; |
729 |
rt_unproc = rtu; |
730 |
} else { |
731 |
rtu->next = rtl->next; |
732 |
rtl->next = rtu; |
733 |
} |
734 |
rtp->raynum = 0; /* clear path for next ray tree */ |
735 |
rtp->bsiz = 0; |
736 |
rtp->buf = NULL; |
737 |
rtp->nbr = 0; |
738 |
} |
739 |
|
740 |
/* process completed ray trees from our queue */ |
741 |
void |
742 |
process_queue(void) |
743 |
{ |
744 |
char modname[128]; |
745 |
/* ray-ordered queue */ |
746 |
while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) { |
747 |
struct rtproc *rtp = rt_unproc; |
748 |
int n = rtp->nbr; |
749 |
const char *cp = rtp->buf; |
750 |
while (n > 0) { /* process rays */ |
751 |
register char *mnp = modname; |
752 |
/* skip leading tabs */ |
753 |
while (n > 0 && *cp == '\t') { |
754 |
cp++; n--; |
755 |
} |
756 |
if (!n || !(isalpha(*cp) | (*cp == '_'))) |
757 |
error(USER, "bad modifier name from rtrace"); |
758 |
/* get modifier name */ |
759 |
while (n > 0 && *cp != '\t') { |
760 |
*mnp++ = *cp++; n--; |
761 |
} |
762 |
*mnp = '\0'; |
763 |
cp++; n--; /* eat following tab */ |
764 |
if (n < (int)(sizeof(float)*9)) |
765 |
error(USER, "incomplete ray value from rtrace"); |
766 |
/* add ray contribution */ |
767 |
memcpy(rparams, cp, sizeof(float)*9); |
768 |
cp += sizeof(float)*9; n -= sizeof(float)*9; |
769 |
add_contrib(modname); |
770 |
} |
771 |
done_contrib(); /* sum up contributions & output */ |
772 |
lastdone = rtp->raynum; |
773 |
free(rtp->buf); /* free up buffer space */ |
774 |
rt_unproc = rtp->next; |
775 |
free(rtp); /* done with this ray tree */ |
776 |
} |
777 |
} |
778 |
|
779 |
/* wait for rtrace process to finish with ray tree */ |
780 |
struct rtproc * |
781 |
wait_rproc(void) |
782 |
{ |
783 |
struct rtproc *rtfree = NULL; |
784 |
fd_set readset, errset; |
785 |
int nr; |
786 |
struct rtproc *rt; |
787 |
int n; |
788 |
|
789 |
do { |
790 |
nr = 0; /* prepare select call */ |
791 |
FD_ZERO(&readset); FD_ZERO(&errset); n = 0; |
792 |
for (rt = &rt0; rt != NULL; rt = rt->next) { |
793 |
if (rt->raynum) { |
794 |
FD_SET(rt->pd.r, &readset); |
795 |
++nr; |
796 |
} |
797 |
FD_SET(rt->pd.r, &errset); |
798 |
if (rt->pd.r >= n) |
799 |
n = rt->pd.r + 1; |
800 |
} |
801 |
if (!nr) /* no rays pending */ |
802 |
break; |
803 |
if (nr > 1) { /* call select for multiple proc's */ |
804 |
errno = 0; |
805 |
if (select(n, &readset, NULL, &errset, NULL) < 0) |
806 |
error(SYSTEM, "select call error in wait_rproc()"); |
807 |
} else |
808 |
FD_ZERO(&errset); |
809 |
nr = 0; |
810 |
for (rt = &rt0; rt != NULL; rt = rt->next) { |
811 |
if (!FD_ISSET(rt->pd.r, &readset) && |
812 |
!FD_ISSET(rt->pd.r, &errset)) |
813 |
continue; |
814 |
if (rt->buf == NULL) { |
815 |
rt->bsiz = treebufsiz; |
816 |
rt->buf = (char *)malloc(treebufsiz); |
817 |
} else if (rt->nbr + BUFSIZ > rt->bsiz) { |
818 |
if (rt->bsiz + BUFSIZ <= treebufsiz) |
819 |
rt->bsiz = treebufsiz; |
820 |
else |
821 |
rt->bsiz = treebufsiz += BUFSIZ; |
822 |
rt->buf = (char *)realloc(rt->buf, rt->bsiz); |
823 |
} |
824 |
if (rt->buf == NULL) |
825 |
error(SYSTEM, "out of memory in wait_rproc"); |
826 |
nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr); |
827 |
if (nr <= 0) |
828 |
error(USER, "rtrace process died"); |
829 |
rt->nbr += nr; /* advance & check */ |
830 |
if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4, |
831 |
"~\t~\t", 4)) { |
832 |
rt->nbr -= 4; /* elide terminator */ |
833 |
queue_raytree(rt); |
834 |
rtfree = rt; /* ready for next ray */ |
835 |
} |
836 |
} |
837 |
} while ((rtfree == NULL) & (nr > 0)); /* repeat until ready or out */ |
838 |
return rtfree; |
839 |
} |
840 |
|
841 |
/* return next available rtrace process */ |
842 |
struct rtproc * |
843 |
get_rproc(void) |
844 |
{ |
845 |
struct rtproc *rtp; |
846 |
/* check for idle rtrace */ |
847 |
for (rtp = &rt0; rtp != NULL; rtp = rtp->next) |
848 |
if (!rtp->raynum) |
849 |
return rtp; |
850 |
return wait_rproc(); /* need to wait for one */ |
851 |
} |
852 |
|
853 |
/* trace ray contributions (main loop) */ |
854 |
void |
855 |
trace_contribs(FILE *fin) |
856 |
{ |
857 |
char inpbuf[128]; |
858 |
int iblen; |
859 |
struct rtproc *rtp; |
860 |
/* loop over input */ |
861 |
while ((iblen = getinp(inpbuf, fin)) > 0) { |
862 |
if (lastray+1 < lastray) { /* counter rollover? */ |
863 |
while (wait_rproc() != NULL) |
864 |
process_queue(); |
865 |
lastdone = lastray = 0; |
866 |
} |
867 |
rtp = get_rproc(); /* get avail. rtrace process */ |
868 |
rtp->raynum = ++lastray; /* assign ray to it */ |
869 |
writebuf(rtp->pd.w, inpbuf, iblen); |
870 |
if (!--raysleft) |
871 |
break; |
872 |
process_queue(); /* catch up with results */ |
873 |
} |
874 |
while (wait_rproc() != NULL) /* process outstanding rays */ |
875 |
process_queue(); |
876 |
if (raysleft > 0) |
877 |
error(USER, "unexpected EOF on input"); |
878 |
} |