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 |
} |