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root/radiance/ray/src/util/rtcontrib.c

Comparing ray/src/util/rtcontrib.c (file contents):
Revision 1.1 by greg, Wed May 25 04:45:22 2005 UTC vs.
Revision 1.48 by greg, Sat Nov 17 16:27:14 2007 UTC

#	Line 5 | Line 5 | static const char RCSid[] = "$Id$";
5		* Gather rtrace output to compute contributions from particular sources
6		*/
7
8	+	#include  "standard.h"
9		#include  <ctype.h>
10	<	#include  "rtio.h"
10	<	#include  "rterror.h"
10	>	#include  <signal.h>
11		#include  "platform.h"
12		#include  "rtprocess.h"
13		#include  "selcall.h"
#	Line 16 | Line 16 | static const char RCSid[] = "$Id$";
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
19	>	#ifndef MAXMODLIST
20	>	#define MAXMODLIST      1024            /* maximum modifiers we'll track */
21		#endif
22
27	–	#define MAXMODLIST      1024            /* maximum modifiers we'll track */
28	–
23		int     treebufsiz = BUFSIZ;            /* current tree buffer size */
24
25	+	typedef double  DCOLOR[3];              /* double-precision color */
26	+
27		/*
28	<	* The modcont structure is used to accumulate ray contributions
28	>	* The MODCONT structure is used to accumulate ray contributions
29		* for a particular modifier, which may be subdivided into bins
30	<	* if binv is non-NULL.  If outspec contains a %s in it, this will
30	>	* if binv evaluates > 0.  If outspec contains a %s in it, this will
31		* be replaced with the modifier name.  If outspec contains a %d in it,
32		* this will be used to create one output file per bin, otherwise all bins
33		* will be written to the same file, in order.  If the global outfmt
#	Line 43 | Line 39 | typedef struct {
39		const char      *modname;       /* modifier name */
40		EPNODE          *binv;          /* bin value expression */
41		int             nbins;          /* number of accumulation bins */
42	<	COLOR           cbin[1];        /* contribution bins (extends struct) */
42	>	DCOLOR          cbin[1];        /* contribution bins (extends struct) */
43		} MODCONT;                      /* modifier contribution */
44
45		static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); }
46
47		LUTAB   modconttab = LU_SINIT(NULL,mcfree);     /* modifier lookup table */
48
49	<	/* close output stream */
50	<	static void closefile(void *p) { fclose((FILE *)p); }
49	>	/*
50	>	* The STREAMOUT structure holds an open FILE pointer and a count of
51	>	* the number of RGB triplets per record, or 0 if unknown.
52	>	*/
53	>	typedef struct {
54	>	FILE            *ofp;           /* output file pointer */
55	>	int             outpipe;        /* output is to a pipe */
56	>	int             reclen;         /* triplets/record */
57	>	int             xr, yr;         /* output resolution for picture */
58	>	} STREAMOUT;
59
60	<	LUTAB   ofiletab = LU_SINIT(free,closefile);    /* output file table */
60	>	/* close output stream and free record */
61	>	static void
62	>	closestream(void *p)
63	>	{
64	>	STREAMOUT       *sop = (STREAMOUT *)p;
65	>	int             status;
66	>	if (sop->outpipe)
67	>	status = pclose(sop->ofp);
68	>	else
69	>	status = fclose(sop->ofp);
70	>	if (status)
71	>	error(SYSTEM, "error closing output stream");
72	>	free(p);
73	>	}
74
75	<	FILE *getofile(const char *ospec, const char *mname, int bn);
75	>	LUTAB   ofiletab = LU_SINIT(free,closestream);  /* output file table */
76
77	+	#define OF_MODIFIER     01
78	+	#define OF_BIN          02
79	+
80	+	STREAMOUT *getostream(const char *ospec, const char *mname, int bn, int noopen);
81	+	int ofname(char *oname, const char *ospec, const char *mname, int bn);
82	+	void printheader(FILE *fout, const char *info);
83	+	void printresolu(FILE *fout, int xr, int yr);
84	+
85		/*
86		* The rcont structure is used to manage i/o with a particular
87		* rtrace child process.  Input is passed unchanged from stdin,
#	Line 66 | Line 91 | FILE *getofile(const char *ospec, const char *mname, i
91		struct rtproc {
92		struct rtproc   *next;          /* next in list of processes */
93		SUBPROC         pd;             /* rtrace pipe descriptors */
94	<	unsigned long   raynum;         /* ray number for this buffer */
95	<	int             bsiz;           /* rtrace buffer length */
96	<	char            *buf;           /* rtrace i/o buffer */
97	<	char            *bpos;          /* current buffer position */
98	<	};                              /* rtrace process */
94	>	unsigned long   raynum;         /* ray number for this tree */
95	>	int             bsiz;           /* ray tree buffer length */
96	>	char            *buf;           /* ray tree buffer */
97	>	int             nbr;            /* number of bytes from rtrace */
98	>	};                              /* rtrace process buffer */
99
100		/* rtrace command and defaults */
101	<	char            *rtargv[256] = { "rtrace", "-dj", ".5", "-dr", "3",
102	<	"-ab", "1", "-ad", "512", };
101	>	char            *rtargv[256+2*MAXMODLIST] = { "rtrace",
102	>	"-dj", ".5", "-dr", "3",
103	>	"-ab", "1", "-ad", "350", };
104	>
105		int  rtargc = 9;
106		/* overriding rtrace options */
107	<	char            *myrtopts[] = { "-o-TmWdp", "-h-",
108	<	"-x", "1", "-y", "0", NULL };
107	>	char            *myrtopts[] = { "-h-", "-x", "1", "-y", "0",
108	>	"-dt", "0", "-as", "0", "-aa", "0", NULL };
109
110	+	#define RTCOEFF         "-o~~TmWdp"     /* compute coefficients only */
111	+	#define RTCONTRIB       "-o~~TmVdp"     /* compute ray contributions */
112	+
113		struct rtproc   rt0;                    /* head of rtrace process list */
114
115		struct rtproc   *rt_unproc = NULL;      /* unprocessed ray trees */
116
117	<	char    persistfn[] = "pfXXXXXX";       /* persist file name */
118	<	char    fmt[8];                         /* rtrace i/o format */
117	>	#define PERSIST_NONE    0               /* no persist file */
118	>	#define PERSIST_SINGLE  1               /* user set -P persist */
119	>	#define PERSIST_PARALL  2               /* user set -PP persist */
120	>	#define PERSIST_OURS    3               /* -PP persist belongs to us */
121	>	int     persist_state = PERSIST_NONE;   /* persist file state */
122	>	char    persistfn[] = "pfXXXXXX";       /* our persist file name, if set */
123
124		int             gargc;                  /* global argc */
125		char            **gargv;                /* global argv */
#	Line 97 | Line 131 | int            inpfmt = 'a';           /* input format */
131		int             outfmt = 'a';           /* output format */
132
133		int             header = 1;             /* output header? */
134	+	int             accumulate = 0;         /* accumulate ray values? */
135	+	int             force_open = 0;         /* truncate existing output? */
136	+	int             recover = 0;            /* recover previous output? */
137		int             xres = 0;               /* horiz. output resolution */
138		int             yres = 0;               /* vert. output resolution */
139
140	<	long            raysleft;               /* number of rays left to trace */
140	>	unsigned long   raysleft;               /* number of rays left to trace */
141		long            waitflush;              /* how long until next flush */
142
143		unsigned long   lastray = 0;            /* last ray number sent */
144		unsigned long   lastdone = 0;           /* last ray processed */
145
146	+	int             using_stdout = 0;       /* are we using stdout? */
147	+
148		const char      *modname[MAXMODLIST];   /* ordered modifier name list */
149		int             nmods = 0;              /* number of modifiers */
150
151	<	MODCONT *addmodifier(char *modn, char *outf, char *binv);
151	>	#define queue_length()          (lastray - lastdone)
152
153	<	int done_rprocs(struct rtproc *rtp);
153	>	MODCONT *growmodifier(MODCONT *mp, int nb);
154	>	MODCONT *addmodifier(char *modn, char *outf, char *binv, int bincnt);
155	>	void addmodfile(char *fname, char *outf, char *binv, int bincnt);
156	>
157		void init(int np);
158	<	void tracecontribs(FILE *fp);
158	>	int done_rprocs(struct rtproc *rtp);
159	>	void reload_output(void);
160	>	void recover_output(FILE *fin);
161	>	void trace_contribs(FILE *fin);
162		struct rtproc *wait_rproc(void);
163		struct rtproc *get_rproc(void);
164	<	void process_rays(struct rtproc *rtp);
164	>	void queue_raytree(struct rtproc *rtp);
165	>	void process_queue(void);
166
167	<	void add_contrib(const char *modn, float rayval[7]);
167	>	void put_contrib(const DCOLOR cnt, FILE *fout);
168	>	void add_contrib(const char *modn);
169		void done_contrib(void);
170
171	+	/* return number of open rtrace processes */
172	+	static int
173	+	nrtprocs(void)
174	+	{
175	+	int     nrtp = 0;
176	+	struct rtproc   *rtp;
177	+
178	+	for (rtp = &rt0; rtp != NULL; rtp = rtp->next)
179	+	nrtp += rtp->pd.running;
180	+	return(nrtp);
181	+	}
182	+
183		/* set input/output format */
184		static void
185		setformat(const char *fmt)
186		{
187		switch (fmt[0]) {
129	–	case 'a':
188		case 'f':
189		case 'd':
190	+	SET_FILE_BINARY(stdin);
191	+	/* fall through */
192	+	case 'a':
193		inpfmt = fmt[0];
194		break;
195		default:
#	Line 158 | Line 219 | fmterr:
219		int
220		main(int argc, char *argv[])
221		{
222	+	int     contrib = 0;
223		int     nprocs = 1;
224		char    *curout = NULL;
225		char    *binval = NULL;
226	<	int     i;
227	<	/* set global argument list */
228	<	gargc = argc;
226	>	int     bincnt = 0;
227	>	char    fmt[8];
228	>	int     i, j;
229	>	/* need at least one argument */
230	>	if (argc < 2) {
231	>	fprintf(stderr,
232	>	"Usage: %s [-n nprocs][-V][-r][-e expr][-f source][-o ospec][-b binv] {-m mod | -M file} [rtrace options] octree\n",
233	>	argv[0]);
234	>	exit(1);
235	>	}
236	>	/* global program name */
237		gargv = argv;
238	<	/* set up calcomp functions */
238	>	/* initialize calcomp routines */
239		esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
240		esupport &= ~(E_OUTCHAN);
241	+	varset("PI", ':', PI);
242		/* get our options */
243	<	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
244	<	switch (argv[i][1]) {
245	<	case 'n':                       /* number of processes */
246	<	if (argv[i][2] || i >= argc-1) break;
247	<	nprocs = atoi(argv[++i]);
248	<	if (nprocs <= 0)
249	<	error(USER, "illegal number of processes");
250	<	continue;
251	<	case 'h':                       /* output header? */
252	<	switch (argv[i][2]) {
253	<	case '\0':
254	<	header = !header;
243	>	for (i = 1; i < argc-1; i++) {
244	>	/* expand arguments */
245	>	while ((j = expandarg(&argc, &argv, i)) > 0)
246	>	;
247	>	if (j < 0) {
248	>	fprintf(stderr, "%s: cannot expand '%s'",
249	>	argv[0], argv[i]);
250	>	exit(1);
251	>	}
252	>	if (argv[i][0] == '-')
253	>	switch (argv[i][1]) {
254	>	case 'n':               /* number of processes */
255	>	if (argv[i][2] || i >= argc-2) break;
256	>	nprocs = atoi(argv[++i]);
257	>	if (nprocs <= 0)
258	>	error(USER, "illegal number of processes");
259		continue;
260	<	case '+': case '1': case 'T': case 't':
261	<	header = 1;
260	>	case 'V':               /* output contributions */
261	>	switch (argv[i][2]) {
262	>	case '\0':
263	>	contrib = !contrib;
264	>	continue;
265	>	case '+': case '1':
266	>	case 'T': case 't':
267	>	case 'Y': case 'y':
268	>	contrib = 1;
269	>	continue;
270	>	case '-': case '0':
271	>	case 'F': case 'f':
272	>	case 'N': case 'n':
273	>	contrib = 0;
274	>	continue;
275	>	}
276	>	break;
277	>	case 'c':               /* accumulate ray values */
278	>	switch (argv[i][2]) {
279	>	case '\0':
280	>	accumulate = !accumulate;
281	>	continue;
282	>	case '+': case '1':
283	>	case 'T': case 't':
284	>	case 'Y': case 'y':
285	>	accumulate = 1;
286	>	continue;
287	>	case '-': case '0':
288	>	case 'F': case 'f':
289	>	case 'N': case 'n':
290	>	accumulate = 0;
291	>	continue;
292	>	}
293	>	break;
294	>	case 'r':               /* recover output */
295	>	if (argv[i][2]) break;
296	>	recover = 1;
297		continue;
298	<	case '-': case '0': case 'F': case 'f':
299	<	header = 0;
298	>	case 'h':               /* output header? */
299	>	switch (argv[i][2]) {
300	>	case '\0':
301	>	header = !header;
302	>	continue;
303	>	case '+': case '1':
304	>	case 'T': case 't':
305	>	case 'Y': case 'y':
306	>	header = 1;
307	>	continue;
308	>	case '-': case '0':
309	>	case 'F': case 'f':
310	>	case 'N': case 'n':
311	>	header = 0;
312	>	continue;
313	>	}
314	>	break;
315	>	case 'f':               /* file or force or format */
316	>	if (!argv[i][2]) {
317	>	char    *fpath;
318	>	if (i >= argc-2) break;
319	>	fpath = getpath(argv[++i],
320	>	getrlibpath(), R_OK);
321	>	if (fpath == NULL) {
322	>	sprintf(errmsg,
323	>	"cannot find file '%s'",
324	>	argv[i]);
325	>	error(USER, errmsg);
326	>	}
327	>	fcompile(fpath);
328	>	continue;
329	>	}
330	>	if (argv[i][2] == 'o') {
331	>	force_open = 1;
332	>	continue;
333	>	}
334	>	setformat(argv[i]+2);
335		continue;
336	<	}
337	<	break;
338	<	case 'f':                       /* file or i/o format */
194	<	if (!argv[i][2]) {
195	<	if (i >= argc-1) break;
196	<	fcompile(argv[++i]);
336	>	case 'e':               /* expression */
337	>	if (argv[i][2] || i >= argc-2) break;
338	>	scompile(argv[++i], NULL, 0);
339		continue;
340	+	case 'o':               /* output file spec. */
341	+	if (argv[i][2] || i >= argc-2) break;
342	+	curout = argv[++i];
343	+	continue;
344	+	case 'x':               /* horiz. output resolution */
345	+	if (argv[i][2] || i >= argc-2) break;
346	+	xres = atoi(argv[++i]);
347	+	continue;
348	+	case 'y':               /* vert. output resolution */
349	+	if (argv[i][2] || i >= argc-2) break;
350	+	yres = atoi(argv[++i]);
351	+	continue;
352	+	case 'b':               /* bin expression/count */
353	+	if (i >= argc-2) break;
354	+	if (argv[i][2] == 'n') {
355	+	bincnt = atoi(argv[++i]);
356	+	continue;
357	+	}
358	+	if (argv[i][2]) break;
359	+	binval = argv[++i];
360	+	continue;
361	+	case 'm':               /* modifier name */
362	+	if (argv[i][2] || i >= argc-2) break;
363	+	rtargv[rtargc++] = "-ti";
364	+	rtargv[rtargc++] = argv[++i];
365	+	addmodifier(argv[i], curout, binval, bincnt);
366	+	continue;
367	+	case 'M':               /* modifier file */
368	+	if (argv[i][2] || i >= argc-2) break;
369	+	rtargv[rtargc++] = "-tI";
370	+	rtargv[rtargc++] = argv[++i];
371	+	addmodfile(argv[i], curout, binval, bincnt);
372	+	continue;
373	+	case 'P':               /* persist file */
374	+	if (i >= argc-2) break;
375	+	persist_state = (argv[i][2] == 'P') ?
376	+	PERSIST_PARALL : PERSIST_SINGLE;
377	+	rtargv[rtargc++] = argv[i];
378	+	rtargv[rtargc++] = argv[++i];
379	+	continue;
380		}
381	<	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 */
381	>	rtargv[rtargc++] = argv[i];     /* assume rtrace option */
382		}
383	<	for ( ; i < argc; i++)  /* transfer rtrace-specific options */
384	<	rtargv[rtargc++] = argv[i];
385	<	if (!strcmp(rtargv[--rtargc], "-defaults"))
386	<	nprocs = 0;
238	<	if (nprocs > 1) {       /* add persist file if parallel invocation */
239	<	rtargv[rtargc++] = "-PP";
240	<	rtargv[rtargc++] = mktemp(persistfn);
241	<	}
383	>	if (accumulate)         /* no output flushing for single record */
384	>	xres = yres = 0;
385	>	/* set global argument list */
386	>	gargc = argc; gargv = argv;
387		/* add "mandatory" rtrace settings */
388	<	for (i = 0; myrtopts[i] != NULL; i++)
389	<	rtargv[rtargc++] = myrtopts[i];
390	<	if (!nprocs) {          /* just asking for defaults? */
388	>	for (j = 0; myrtopts[j] != NULL; j++)
389	>	rtargv[rtargc++] = myrtopts[j];
390	>	rtargv[rtargc++] = contrib ? RTCONTRIB : RTCOEFF;
391	>	/* just asking for defaults? */
392	>	if (!strcmp(argv[i], "-defaults")) {
393		char    sxres[16], syres[16];
394		char    *rtpath;
395	<	printf("-n  1\t\t\t\t# number of processes\n", nprocs);
395	>	printf("-n  %-2d\t\t\t\t# number of processes\n", nprocs);
396	>	printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
397	>	contrib ? "contributions" : "coefficients");
398	>	printf("-c%c\t\t\t\t# %s\n", accumulate ? '+' : '-',
399	>	accumulate ? "accumulate ray values" :
400	>	"one output record per ray");
401		fflush(stdout);                 /* report OUR options */
402		rtargv[rtargc++] = header ? "-h+" : "-h-";
403		sprintf(fmt, "-f%c%c", inpfmt, outfmt);
#	Line 256 | Line 408 | main(int argc, char *argv[])
408		rtargv[rtargc++] = "-y";
409		sprintf(syres, "%d", yres);
410		rtargv[rtargc++] = syres;
259	–	rtargv[rtargc++] = "-oW";
411		rtargv[rtargc++] = "-defaults";
412		rtargv[rtargc] = NULL;
413		rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
#	Line 269 | Line 420 | main(int argc, char *argv[])
420		perror(rtpath); /* execv() should not return */
421		exit(1);
422		}
423	<	if (!nmods)
424	<	error(USER, "No modifiers specified");
425	<	if (argc < 2 || argv[argc-1][0] == '-')
426	<	error(USER, "missing octree argument");
423	>	if (nprocs > 1) {       /* add persist file if parallel */
424	>	if (persist_state == PERSIST_SINGLE)
425	>	error(USER, "use -PP option for multiple processes");
426	>	if (persist_state == PERSIST_NONE) {
427	>	rtargv[rtargc++] = "-PP";
428	>	rtargv[rtargc++] = mktemp(persistfn);
429	>	persist_state = PERSIST_OURS;
430	>	}
431	>	}
432		/* add format string */
433		sprintf(fmt, "-f%cf", inpfmt);
434		rtargv[rtargc++] = fmt;
435		/* octree argument is last */
436	<	rtargv[rtargc++] = octree = argv[argc-1];
436	>	if (i <= 0 || i != argc-1 || argv[i][0] == '-')
437	>	error(USER, "missing octree argument");
438	>	rtargv[rtargc++] = octree = argv[i];
439		rtargv[rtargc] = NULL;
440	<	/* start rtrace & sum contributions */
440	>	/* start rtrace & recover if requested */
441		init(nprocs);
442	<	tracecontribs(stdin);
442	>	/* compute contributions */
443	>	trace_contribs(stdin);
444	>	/* clean up */
445		quit(0);
446		}
447
448	+	#ifndef SIGALRM
449	+	#define SIGALRM SIGTERM
450	+	#endif
451		/* kill persistent rtrace process */
452		static void
453		killpersist(void)
454		{
455		FILE    *fp = fopen(persistfn, "r");
456	<	int     pid;
456	>	RT_PID  pid;
457
458		if (fp == NULL)
459		return;
#	Line 324 | Line 487 | quit(int status)
487		{
488		int     rtstat;
489
490	<	if (rt0.next != NULL)           /* terminate persistent rtrace */
490	>	if (persist_state == PERSIST_OURS)  /* terminate waiting rtrace */
491		killpersist();
492		/* clean up rtrace process(es) */
493		rtstat = done_rprocs(&rt0);
#	Line 333 | Line 496 | quit(int status)
496		exit(status);                   /* flushes all output streams */
497		}
498
499	<	/* start rtrace and initialize buffers */
499	>	/* start rtrace processes and initialize */
500		void
501		init(int np)
502		{
503		struct rtproc   *rtp;
504		int     i;
505		int     maxbytes;
506	+	/* make sure we have something to do */
507	+	if (!nmods)
508	+	error(USER, "No modifiers specified");
509		/* assign ray variables */
510		scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
511		scompile("Px=$4;Py=$5;Pz=$6;", NULL, 0);
512		/* set up signal handling */
513	<	#ifdef SIGPIPE /* not present on Windows */
513	>	signal(SIGINT, quit);
514	>	#ifdef SIGHUP
515	>	signal(SIGHUP, quit);
516	>	#endif
517	>	#ifdef SIGTERM
518	>	signal(SIGTERM, quit);
519	>	#endif
520	>	#ifdef SIGPIPE
521		signal(SIGPIPE, quit);
522		#endif
523		rtp = &rt0;                     /* start rtrace process(es) */
#	Line 360 | Line 533 | init(int np)
533		error(SYSTEM, "cannot start rtrace process");
534		if (maxbytes > treebufsiz)
535		treebufsiz = maxbytes;
536	+	rtp->raynum = 0;
537		rtp->bsiz = 0;
538		rtp->buf = NULL;
539	<	rtp->raynum = 0;
539	>	rtp->nbr = 0;
540		if (i == np)            /* last process? */
541		break;
542		if (i == 1)
#	Line 375 | Line 549 | init(int np)
549		rtp->next = NULL;               /* terminate list */
550		if (yres > 0) {
551		if (xres > 0)
552	<	raysleft = xres*yres;
552	>	raysleft = (unsigned long)xres*yres;
553		else
554		raysleft = yres;
555		} else
556		raysleft = 0;
557		waitflush = xres;
558	+	if (!recover)
559	+	return;
560	+	/* recover previous values */
561	+	if (accumulate)
562	+	reload_output();
563	+	else
564	+	recover_output(stdin);
565		}
566
567	+	/* grow modifier to accommodate more bins */
568	+	MODCONT *
569	+	growmodifier(MODCONT *mp, int nb)
570	+	{
571	+	if (nb <= mp->nbins)
572	+	return mp;
573	+	mp = (MODCONT *)realloc(mp, sizeof(MODCONT) + sizeof(DCOLOR)*(nb-1));
574	+	if (mp == NULL)
575	+	error(SYSTEM, "out of memory in growmodifier");
576	+	memset(mp->cbin+mp->nbins, 0, sizeof(DCOLOR)*(nb-mp->nbins));
577	+	mp->nbins = nb;
578	+	return mp;
579	+	}
580	+
581		/* add modifier to our list to track */
582		MODCONT *
583	<	addmodifier(char *modn, char *outf, char *binv)
583	>	addmodifier(char *modn, char *outf, char *binv, int bincnt)
584		{
585		LUENT   *lep = lu_find(&modconttab, modn);
586		MODCONT *mp;
587	+	int     i;
588
589		if (lep->data != NULL) {
590		sprintf(errmsg, "duplicate modifier '%s'", modn);
#	Line 401 | Line 597 | addmodifier(char *modn, char *outf, char *binv)
597		mp = (MODCONT *)malloc(sizeof(MODCONT));
598		if (mp == NULL)
599		error(SYSTEM, "out of memory in addmodifier");
404	–	lep->data = (char *)mp;
600		mp->outspec = outf;             /* XXX assumes static string */
601		mp->modname = modn;             /* XXX assumes static string */
602		if (binv != NULL)
#	Line 410 | Line 605 | addmodifier(char *modn, char *outf, char *binv)
605		mp->binv = eparse("0");
606		mp->nbins = 1;
607		setcolor(mp->cbin[0], 0., 0., 0.);
608	+	if (mp->binv->type == NUM)      /* assume one bin if constant */
609	+	bincnt = 1;
610	+	else if (bincnt > 1)
611	+	mp = growmodifier(mp, bincnt);
612	+	lep->data = (char *)mp;
613	+	/* allocate output streams */
614	+	for (i = bincnt; i-- > 0; )
615	+	getostream(mp->outspec, mp->modname, i, 1);
616		return mp;
617		}
618
619	+	/* add modifiers from a file list */
620	+	void
621	+	addmodfile(char *fname, char *outf, char *binv, int bincnt)
622	+	{
623	+	char    *mname[MAXMODLIST];
624	+	int     i;
625	+	/* find the file & store strings */
626	+	if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) {
627	+	sprintf(errmsg, "cannot find modifier file '%s'", fname);
628	+	error(SYSTEM, errmsg);
629	+	}
630	+	for (i = 0; mname[i]; i++)      /* add each one */
631	+	addmodifier(mname[i], outf, binv, bincnt);
632	+	}
633	+
634		/* put string to stderr */
635		void
636		eputs(char  *s)
#	Line 428 | Line 646 | eputs(char  *s)
646		midline = s[strlen(s)-1] != '\n';
647		}
648
649	+	/* construct output file name and return flags whether modifier/bin present */
650	+	int
651	+	ofname(char *oname, const char *ospec, const char *mname, int bn)
652	+	{
653	+	const char      *mnp = NULL;
654	+	const char      *bnp = NULL;
655	+	const char      *cp;
656	+
657	+	if (ospec == NULL)
658	+	return -1;
659	+	for (cp = ospec; *cp; cp++)             /* check format position(s) */
660	+	if (*cp == '%') {
661	+	do
662	+	++cp;
663	+	while (isdigit(*cp));
664	+	switch (*cp) {
665	+	case '%':
666	+	break;
667	+	case 's':
668	+	if (mnp != NULL)
669	+	return -1;
670	+	mnp = cp;
671	+	break;
672	+	case 'd':
673	+	if (bnp != NULL)
674	+	return -1;
675	+	bnp = cp;
676	+	break;
677	+	default:
678	+	return -1;
679	+	}
680	+	}
681	+	if (mnp != NULL) {                      /* create file name */
682	+	if (bnp != NULL) {
683	+	if (bnp > mnp)
684	+	sprintf(oname, ospec, mname, bn);
685	+	else
686	+	sprintf(oname, ospec, bn, mname);
687	+	return OF_MODIFIER|OF_BIN;
688	+	}
689	+	sprintf(oname, ospec, mname);
690	+	return OF_MODIFIER;
691	+	}
692	+	if (bnp != NULL) {
693	+	sprintf(oname, ospec, bn);
694	+	return OF_BIN;
695	+	}
696	+	strcpy(oname, ospec);
697	+	return 0;
698	+	}
699	+
700		/* write header to the given output stream */
701		void
702	<	printheader(FILE *fout)
702	>	printheader(FILE *fout, const char *info)
703		{
704		extern char     VersionID[];
705		FILE            *fin = fopen(octree, "r");
706
707		if (fin == NULL)
708		quit(1);
709	<	getheader(fin, (gethfunc *)fputs, fout);        /* copy octree header */
709	>	checkheader(fin, "ignore", fout);       /* copy octree header */
710		fclose(fin);
711		printargs(gargc-1, gargv, fout);        /* add our command */
712		fprintf(fout, "SOFTWARE= %s\n", VersionID);
713		fputnow(fout);
714	+	if (info != NULL)                       /* add extra info if given */
715	+	fputs(info, fout);
716		switch (outfmt) {                       /* add output format */
717		case 'a':
718		fputformat("ascii", fout);
#	Line 457 | Line 728 | printheader(FILE *fout)
728		break;
729		}
730		fputc('\n', fout);
731	<	if (xres > 0) {
732	<	if (yres > 0)                   /* resolution string */
733	<	fprtresolu(xres, yres, fout);
731	>	}
732	>
733	>	/* write resolution string to given output stream */
734	>	void
735	>	printresolu(FILE *fout, int xr, int yr)
736	>	{
737	>	if ((xr > 0) & (yr > 0))        /* resolution string */
738	>	fprtresolu(xr, yr, fout);
739	>	if (xres > 0)                   /* global flush flag */
740		fflush(fout);
464	–	}
741		}
742
743	<	/* Get output file pointer (open and write header if new) */
744	<	FILE *
745	<	getofile(const char *ospec, const char *mname, int bn)
743	>	/* Get output stream pointer (open and write header if new and noopen==0) */
744	>	STREAMOUT *
745	>	getostream(const char *ospec, const char *mname, int bn, int noopen)
746		{
747	<	static int      using_stdout = 0;
748	<	const char      *mnp = NULL;
749	<	const char      *bnp = NULL;
750	<	const char      *cp;
751	<	char            ofname[1024];
752	<	LUENT           *lep;
747	>	static const DCOLOR     nocontrib = BLKCOLOR;
748	>	static STREAMOUT        stdos;
749	>	int                     ofl;
750	>	char                    oname[1024];
751	>	LUENT                   *lep;
752	>	STREAMOUT               *sop;
753
754		if (ospec == NULL) {                    /* use stdout? */
755	<	if (!using_stdout && header)
756	<	printheader(stdout);
757	<	using_stdout = 1;
758	<	return stdout;
755	>	if (!noopen && !using_stdout) {
756	>	if (outfmt != 'a')
757	>	SET_FILE_BINARY(stdout);
758	>	if (header)
759	>	printheader(stdout, NULL);
760	>	printresolu(stdout, xres, yres);
761	>	stdos.xr = xres; stdos.yr = yres;
762	>	using_stdout = 1;
763	>	}
764	>	stdos.ofp = stdout;
765	>	stdos.reclen += noopen;
766	>	return &stdos;
767		}
768	<	for (cp = ospec; *cp; cp++)             /* check format position(s) */
769	<	if (*cp == '%') {
770	<	do
771	<	++cp;
772	<	while (isdigit(*cp));
773	<	switch (*cp) {
774	<	case '%':
775	<	break;
776	<	case 's':
777	<	if (mnp != NULL)
778	<	goto badspec;
779	<	mnp = cp;
780	<	break;
781	<	case 'd':
782	<	if (bnp != NULL)
783	<	goto badspec;
784	<	bnp = cp;
785	<	break;
786	<	default:
787	<	goto badspec;
768	>	ofl = ofname(oname, ospec, mname, bn);  /* get output name */
769	>	if (ofl < 0) {
770	>	sprintf(errmsg, "bad output format '%s'", ospec);
771	>	error(USER, errmsg);
772	>	}
773	>	lep = lu_find(&ofiletab, oname);        /* look it up */
774	>	if (lep->key == NULL)                   /* new entry */
775	>	lep->key = strcpy((char *)malloc(strlen(oname)+1), oname);
776	>	sop = (STREAMOUT *)lep->data;
777	>	if (sop == NULL) {                      /* allocate stream */
778	>	sop = (STREAMOUT *)malloc(sizeof(STREAMOUT));
779	>	if (sop == NULL)
780	>	error(SYSTEM, "out of memory in getostream");
781	>	sop->outpipe = oname[0] == '!';
782	>	sop->reclen = 0;
783	>	sop->ofp = NULL;                /* open iff noopen==0 */
784	>	sop->xr = xres; sop->yr = yres;
785	>	lep->data = (char *)sop;
786	>	if (!sop->outpipe & !force_open & !recover &&
787	>	access(oname, F_OK) == 0) {
788	>	errno = EEXIST;         /* file exists */
789	>	goto openerr;
790	>	}
791	>	}
792	>	if (!noopen && sop->ofp == NULL) {      /* open output stream */
793	>	long            i;
794	>	if (oname[0] == '!')            /* output to command */
795	>	sop->ofp = popen(oname+1, "w");
796	>	else                            /* else open file */
797	>	sop->ofp = fopen(oname, "w");
798	>	if (sop->ofp == NULL)
799	>	goto openerr;
800	>	if (outfmt != 'a')
801	>	SET_FILE_BINARY(sop->ofp);
802	>	if (header) {
803	>	char    info[512];
804	>	char    *cp = info;
805	>	if (ofl & OF_MODIFIER || sop->reclen == 1) {
806	>	sprintf(cp, "MODIFIER=%s\n", mname);
807	>	while (*cp) ++cp;
808		}
809	+	if (ofl & OF_BIN) {
810	+	sprintf(cp, "BIN=%d\n", bn);
811	+	while (*cp) ++cp;
812	+	}
813	+	*cp = '\0';
814	+	printheader(sop->ofp, info);
815		}
816	<	if (mnp != NULL) {                      /* create file name */
817	<	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);
816	>	if (!accumulate) {              /* global res. for -c- */
817	>	sop->xr = xres; sop->yr = yres;
818		}
819	<	if (header)
820	<	printheader((FILE *)lep->data);
819	>	printresolu(sop->ofp, sop->xr, sop->yr);
820	>	/* play catch-up */
821	>	for (i = accumulate ? 0 : lastdone; i--; ) {
822	>	int     j = sop->reclen;
823	>	if (j <= 0) j = 1;
824	>	while (j--)
825	>	put_contrib(nocontrib, sop->ofp);
826	>	if (outfmt == 'a')
827	>	putc('\n', sop->ofp);
828	>	}
829	>	if (xres > 0)
830	>	fflush(sop->ofp);
831		}
832	<	return (FILE *)lep->data;               /* return open file pointer */
833	<	badspec:
834	<	sprintf(errmsg, "bad output format '%s'", ospec);
835	<	error(USER, errmsg);
836	<	return NULL;            /* pro forma return */
832	>	sop->reclen += noopen;                  /* add to length if noopen */
833	>	return sop;                             /* return output stream */
834	>	openerr:
835	>	sprintf(errmsg, "cannot open '%s' for writing", oname);
836	>	error(SYSTEM, errmsg);
837	>	return NULL;    /* pro forma return */
838		}
839
840		/* read input ray into buffer */
841		int
842		getinp(char *buf, FILE *fp)
843		{
844	+	double  dv[3], *dvp;
845	+	float   *fvp;
846	+	char    *cp;
847	+	int     i;
848	+
849		switch (inpfmt) {
850		case 'a':
851	<	if (fgets(buf, 128, fp) == NULL)
852	<	return 0;
851	>	cp = buf;               /* make sure we get 6 floats */
852	>	for (i = 0; i < 6; i++) {
853	>	if (fgetword(cp, buf+127-cp, fp) == NULL)
854	>	return -1;
855	>	if (i >= 3)
856	>	dv[i-3] = atof(cp);
857	>	if ((cp = fskip(cp)) == NULL || *cp)
858	>	return -1;
859	>	*cp++ = ' ';
860	>	}
861	>	getc(fp);               /* get/put eol */
862	>	*cp-- = '\0'; *cp = '\n';
863	>	if (DOT(dv,dv) <= FTINY*FTINY)
864	>	return 0;       /* dummy ray */
865		return strlen(buf);
866		case 'f':
867		if (fread(buf, sizeof(float), 6, fp) < 6)
868	<	return 0;
868	>	return -1;
869	>	fvp = (float *)buf + 3;
870	>	if (DOT(fvp,fvp) <= FTINY*FTINY)
871	>	return 0;       /* dummy ray */
872		return sizeof(float)*6;
873		case 'd':
874		if (fread(buf, sizeof(double), 6, fp) < 6)
875	<	return 0;
875	>	return -1;
876	>	dvp = (double *)buf + 3;
877	>	if (DOT(dvp,dvp) <= FTINY*FTINY)
878	>	return 0;       /* dummy ray */
879		return sizeof(double)*6;
880		}
881		error(INTERNAL, "botched input format");
882	<	return 0;       /* pro forma return */
882	>	return -1;      /* pro forma return */
883		}
884
885	<	static const float      *rparams = NULL;        /* ray parameter pointer */
885	>	static float    rparams[9];             /* traced ray parameters */
886
887		/* return channel (ray) value */
888		double
#	Line 564 | Line 890 | chanvalue(int n)
890		{
891		if (--n < 0 || n >= 6)
892		error(USER, "illegal channel number ($N)");
893	<	if (rparams == NULL)
568	<	error(USER, "illegal use of $N in constant expression");
569	<	return rparams[n];
893	>	return rparams[n+3];
894		}
895
896	<	/* add ray contribution to the appropriate modifier bin */
896	>	/* add current ray contribution to the appropriate modifier bin */
897		void
898	<	add_contrib(const char *modn, float rayval[9])
898	>	add_contrib(const char *modn)
899		{
900		LUENT   *le = lu_find(&modconttab, modn);
901		MODCONT *mp = (MODCONT *)le->data;
#	Line 581 | Line 905 | add_contrib(const char *modn, float rayval[9])
905		sprintf(errmsg, "unexpected modifier '%s' from rtrace", modn);
906		error(USER, errmsg);
907		}
908	<	rparams = rayval + 3;           /* for chanvalue */
585	<	eclock++;
908	>	eclock++;                       /* get bin number */
909		bn = (int)(evalue(mp->binv) + .5);
910		if (bn <= 0)
911		bn = 0;
912	<	else if (bn > mp->nbins) {      /* new bin */
913	<	mp = (MODCONT *)realloc(mp, sizeof(MODCONT) +
914	<	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;
912	>	else if (bn >= mp->nbins)       /* new bin */
913	>	le->data = (char *)(mp = growmodifier(mp, bn+1));
914	>	addcolor(mp->cbin[bn], rparams);
915		}
916
917		/* output newline to ASCII file and/or flush as requested */
918		static int
919		puteol(const LUENT *e, void *p)
920		{
921	<	FILE    *fp = (FILE *)e->data;
921	>	STREAMOUT       *sop = (STREAMOUT *)e->data;
922
923		if (outfmt == 'a')
924	<	putc('\n', fp);
924	>	putc('\n', sop->ofp);
925		if (!waitflush)
926	<	fflush(fp);
927	<	if (ferror(fp)) {
926	>	fflush(sop->ofp);
927	>	if (ferror(sop->ofp)) {
928		sprintf(errmsg, "write error on file '%s'", e->key);
929		error(SYSTEM, errmsg);
930		}
931		return 0;
932		}
933
934	<	/* output ray tallies and clear for next primary */
934	>	/* put out ray contribution to file */
935		void
936	<	done_contrib(void)
936	>	put_contrib(const DCOLOR cnt, FILE *fout)
937		{
938	<	int     i, j;
624	<	MODCONT *mp;
625	<	FILE    *fout;
626	<	double  dv[3];
938	>	float   fv[3];
939		COLR    cv;
940	+
941	+	switch (outfmt) {
942	+	case 'a':
943	+	fprintf(fout, "%.6e\t%.6e\t%.6e\t", cnt[0], cnt[1], cnt[2]);
944	+	break;
945	+	case 'f':
946	+	copycolor(fv, cnt);
947	+	fwrite(fv, sizeof(float), 3, fout);
948	+	break;
949	+	case 'd':
950	+	fwrite(cnt, sizeof(double), 3, fout);
951	+	break;
952	+	case 'c':
953	+	setcolr(cv, cnt[0], cnt[1], cnt[2]);
954	+	fwrite(cv, sizeof(cv), 1, fout);
955	+	break;
956	+	default:
957	+	error(INTERNAL, "botched output format");
958	+	}
959	+	}
960	+
961	+	/* output ray tallies and clear for next accumulation */
962	+	void
963	+	done_contrib(void)
964	+	{
965	+	int             i, j;
966	+	MODCONT         *mp;
967	+	STREAMOUT       *sop;
968		/* output modifiers in order */
969		for (i = 0; i < nmods; i++) {
970		mp = (MODCONT *)lu_find(&modconttab,modname[i])->data;
971	<	for (j = 0; j < mp->nbins; j++) {
972	<	fout = getofile(mp->outspec, mp->modname, j);
973	<	switch (outfmt) {
974	<	case 'a':
975	<	fprintf(fout, "%.6e\t%.6e\t%.6e\t",
976	<	mp->cbin[j][RED],
977	<	mp->cbin[j][GRN],
978	<	mp->cbin[j][BLU]);
979	<	break;
980	<	case 'f':
981	<	fwrite(mp->cbin[j], sizeof(float), 3, fout);
982	<	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);
971	>	sop = getostream(mp->outspec, mp->modname, 0,0);
972	>	put_contrib(mp->cbin[0], sop->ofp);
973	>	if (mp->nbins > 3 &&            /* minor optimization */
974	>	sop == getostream(mp->outspec, mp->modname, 1,0))
975	>	for (j = 1; j < mp->nbins; j++)
976	>	put_contrib(mp->cbin[j], sop->ofp);
977	>	else
978	>	for (j = 1; j < mp->nbins; j++)
979	>	put_contrib(mp->cbin[j],
980	>	getostream(mp->outspec,mp->modname,j,0)->ofp);
981	>	/* clear for next time */
982	>	memset(mp->cbin, 0, sizeof(DCOLOR)*mp->nbins);
983		}
984		--waitflush;                            /* terminate records */
985		lu_doall(&ofiletab, puteol, NULL);
986	<	if (!waitflush)
986	>	if (using_stdout & (outfmt == 'a'))
987	>	putc('\n', stdout);
988	>	if (!waitflush) {
989		waitflush = xres;
990	+	if (using_stdout)
991	+	fflush(stdout);
992	+	}
993		}
994
995	<	/* process (or save) ray tree produced by rtrace process */
995	>	/* queue completed ray tree produced by rtrace process */
996		void
997	<	process_rays(struct rtproc *rtp)
997	>	queue_raytree(struct rtproc *rtp)
998		{
999	<	struct rtproc   *rtu;
1000	<	/* check if time to process it */
1001	<	if (rtp->raynum == lastdone+1) {
1002	<	int             n = rtp->bpos - rtp->buf;
999	>	struct rtproc   *rtu, *rtl = NULL;
1000	>	/* insert following ray order */
1001	>	for (rtu = rt_unproc; rtu != NULL; rtu = (rtl=rtu)->next)
1002	>	if (rtp->raynum < rtu->raynum)
1003	>	break;
1004	>	rtu = (struct rtproc *)malloc(sizeof(struct rtproc));
1005	>	if (rtu == NULL)
1006	>	error(SYSTEM, "out of memory in queue_raytree");
1007	>	*rtu = *rtp;
1008	>	if (rtl == NULL) {
1009	>	rtu->next = rt_unproc;
1010	>	rt_unproc = rtu;
1011	>	} else {
1012	>	rtu->next = rtl->next;
1013	>	rtl->next = rtu;
1014	>	}
1015	>	rtp->raynum = 0;                /* clear path for next ray tree */
1016	>	rtp->bsiz = 0;
1017	>	rtp->buf = NULL;
1018	>	rtp->nbr = 0;
1019	>	}
1020	>
1021	>	/* process completed ray trees from our queue */
1022	>	void
1023	>	process_queue(void)
1024	>	{
1025	>	char    modname[128];
1026	>	/* ray-ordered queue */
1027	>	while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1028	>	struct rtproc   *rtp = rt_unproc;
1029	>	int             n = rtp->nbr;
1030		const char      *cp = rtp->buf;
1031		while (n > 0) {         /* process rays */
1032	<	char    matname[128];
678	<	char    *mnp = matname;
1032	>	register char   *mnp = modname;
1033		/* skip leading tabs */
1034		while (n > 0 && *cp == '\t') {
1035		cp++; n--;
1036		}
1037	<	/* get material name */
1038	<	while (n > 0 && *cp != '\t') {
1037	>	if (!n || !(isalpha(*cp) | (*cp == '_')))
1038	>	error(USER, "bad modifier name from rtrace");
1039	>	/* get modifier name */
1040	>	while (n > 1 && *cp != '\t') {
1041	>	if (mnp - modname >= sizeof(modname)-2)
1042	>	error(INTERNAL, "modifier name too long");
1043		*mnp++ = *cp++; n--;
1044		}
687	–	if (!n)
688	–	error(USER, "botched modifer name from rtrace");
1045		*mnp = '\0';
1046	<	cp++; n--;      /* skip terminating tab */
1046	>	cp++; n--;      /* eat following tab */
1047		if (n < (int)(sizeof(float)*9))
1048		error(USER, "incomplete ray value from rtrace");
1049		/* add ray contribution */
1050	<	add_contrib(matname, (float *)cp);
1050	>	memcpy(rparams, cp, sizeof(float)*9);
1051		cp += sizeof(float)*9; n -= sizeof(float)*9;
1052	+	add_contrib(modname);
1053		}
1054	<	done_contrib();         /* sum up contributions & output */
1054	>	if (!accumulate)
1055	>	done_contrib(); /* sum up contributions & output */
1056		lastdone = rtp->raynum;
1057	<	free(rtp->buf);
1058	<	/* catch up with unprocessed list */
1059	<	while (rt_unproc != NULL && rt_unproc->raynum == lastdone+1) {
1060	<	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	<	}
1057	>	if (rtp->buf != NULL)   /* free up buffer space */
1058	>	free(rtp->buf);
1059	>	rt_unproc = rtp->next;
1060	>	free(rtp);              /* done with this ray tree */
1061		}
723	–	rtp->raynum = 0;                /* clear path for next ray tree */
724	–	rtp->bsiz = 0;
725	–	rtp->buf = NULL;
1062		}
1063
1064		/* wait for rtrace process to finish with ray tree */
#	Line 763 | Line 1099 | wait_rproc(void)
1099		if (rt->buf == NULL) {
1100		rt->bsiz = treebufsiz;
1101		rt->buf = (char *)malloc(treebufsiz);
1102	<	} else if (rt->bpos + BUFSIZ > rt->buf + rt->bsiz) {
1102	>	} else if (rt->nbr + BUFSIZ > rt->bsiz) {
1103		if (rt->bsiz + BUFSIZ <= treebufsiz)
1104		rt->bsiz = treebufsiz;
1105		else
1106	<	rt->bsiz = treebufsiz += BUFSIZ;
1106	>	treebufsiz = rt->bsiz += BUFSIZ;
1107		rt->buf = (char *)realloc(rt->buf, rt->bsiz);
1108		}
1109		if (rt->buf == NULL)
1110		error(SYSTEM, "out of memory in wait_rproc");
1111	<	nr = read(rt->pd.r, rt->bpos,
1112	<	rt->buf + rt->bsiz - rt->bpos);
777	<	if (!nr)
1111	>	nr = read(rt->pd.r, rt->buf+rt->nbr, rt->bsiz-rt->nbr);
1112	>	if (nr <= 0)
1113		error(USER, "rtrace process died");
1114	<	rt->bpos += nr;         /* advance buffer & check */
1115	<	if (rt->bpos[-1] == '\t' && rt->bpos[-2] == '-') {
1116	<	rt->bpos -= 2;  /* elide terminator */
1117	<	process_rays(rt);
1114	>	rt->nbr += nr;          /* advance & check */
1115	>	if (rt->nbr >= 4 && !memcmp(rt->buf+rt->nbr-4,
1116	>	"~\t~\t", 4)) {
1117	>	rt->nbr -= 4;   /* elide terminator */
1118	>	queue_raytree(rt);
1119		rtfree = rt;    /* ready for next ray */
1120		}
1121		}
#	Line 801 | Line 1137 | get_rproc(void)
1137
1138		/* trace ray contributions (main loop) */
1139		void
1140	<	tracecontribs(FILE *fin)
1140	>	trace_contribs(FILE *fin)
1141		{
1142		char            inpbuf[128];
1143		int             iblen;
1144		struct rtproc   *rtp;
1145		/* loop over input */
1146	<	while ((iblen = getinp(inpbuf, fin)) > 0) {
1147	<	if (lastray+1 < lastray) {      /* counter rollover? */
1146	>	while ((iblen = getinp(inpbuf, fin)) >= 0) {
1147	>	if (!iblen ||                   /* need reset? */
1148	>	queue_length() > 10*nrtprocs() ||
1149	>	lastray+1 < lastray) {
1150		while (wait_rproc() != NULL)
1151	<	;
1152	<	lastdone = lastray = 0;
1151	>	process_queue();
1152	>	if (lastray+1 < lastray)
1153	>	lastdone = lastray = 0;
1154		}
1155		rtp = get_rproc();              /* get avail. rtrace process */
1156	<	rtp->raynum = ++lastray;        /* assign this ray to it */
1157	<	writebuf(rtp->pd.w, inpbuf, iblen);
1158	<	if (!--raysleft)
1159	<	break;                  /* explicit EOF */
1156	>	rtp->raynum = ++lastray;        /* assign ray */
1157	>	if (iblen) {                    /* trace ray if valid */
1158	>	writebuf(rtp->pd.w, inpbuf, iblen);
1159	>	} else {                        /* else bypass dummy ray */
1160	>	queue_raytree(rtp);     /* empty tree */
1161	>	if ((yres <= 0) | (waitflush > 1))
1162	>	waitflush = 1;  /* flush after this */
1163	>	}
1164	>	process_queue();                /* catch up with results */
1165	>	if (raysleft && !--raysleft)
1166	>	break;                  /* preemptive EOI */
1167		}
1168		while (wait_rproc() != NULL)            /* process outstanding rays */
1169	<	;
1169	>	process_queue();
1170	>	if (accumulate)
1171	>	done_contrib();                 /* output tallies */
1172	>	if (raysleft)
1173	>	error(USER, "unexpected EOF on input");
1174	>	lu_done(&ofiletab);                     /* close output files */
1175	>	}
1176	>
1177	>	/* get ray contribution from previous file */
1178	>	static int
1179	>	get_contrib(DCOLOR cnt, FILE *finp)
1180	>	{
1181	>	COLOR   fv;
1182	>	COLR    cv;
1183	>
1184	>	switch (outfmt) {
1185	>	case 'a':
1186	>	return(fscanf(finp,"%lf %lf %lf",&cnt[0],&cnt[1],&cnt[2]) == 3);
1187	>	case 'f':
1188	>	if (fread(fv, sizeof(fv[0]), 3, finp) != 3)
1189	>	return(0);
1190	>	copycolor(cnt, fv);
1191	>	return(1);
1192	>	case 'd':
1193	>	return(fread(cnt, sizeof(cnt[0]), 3, finp) == 3);
1194	>	case 'c':
1195	>	if (fread(cv, sizeof(cv), 1, finp) != 1)
1196	>	return(0);
1197	>	colr_color(fv, cv);
1198	>	copycolor(cnt, fv);
1199	>	return(1);
1200	>	default:
1201	>	error(INTERNAL, "botched output format");
1202	>	}
1203	>	return(0);      /* pro forma return */
1204	>	}
1205	>
1206	>	/* close output file opened for input */
1207	>	static int
1208	>	myclose(const LUENT *e, void *p)
1209	>	{
1210	>	STREAMOUT       *sop = (STREAMOUT *)e->data;
1211	>
1212	>	if (sop->ofp == NULL)
1213	>	return;
1214	>	fclose(sop->ofp);
1215	>	sop->ofp = NULL;
1216	>	}
1217	>
1218	>	/* load previously accumulated values */
1219	>	void
1220	>	reload_output(void)
1221	>	{
1222	>	int             i, j;
1223	>	MODCONT         *mp;
1224	>	int             ofl;
1225	>	char            oname[1024];
1226	>	char            *fmode = "rb";
1227	>	char            *outvfmt;
1228	>	LUENT           *ment, *oent;
1229	>	int             xr, yr;
1230	>	STREAMOUT       sout;
1231	>	DCOLOR          rgbv;
1232	>
1233	>	switch (outfmt) {
1234	>	case 'a':
1235	>	outvfmt = "ascii";
1236	>	fmode = "r";
1237	>	break;
1238	>	case 'f':
1239	>	outvfmt = "float";
1240	>	break;
1241	>	case 'd':
1242	>	outvfmt = "double";
1243	>	break;
1244	>	case 'c':
1245	>	outvfmt = COLRFMT;
1246	>	break;
1247	>	default:
1248	>	error(INTERNAL, "botched output format");
1249	>	return;
1250	>	}
1251	>	/* reload modifier values */
1252	>	for (i = 0; i < nmods; i++) {
1253	>	ment = lu_find(&modconttab,modname[i]);
1254	>	mp = (MODCONT *)ment->data;
1255	>	if (mp->outspec == NULL)
1256	>	error(USER, "cannot reload from stdout");
1257	>	if (mp->outspec[0] == '!')
1258	>	error(USER, "cannot reload from command");
1259	>	for (j = 0; ; j++) {            /* load each modifier bin */
1260	>	ofl = ofname(oname, mp->outspec, mp->modname, j);
1261	>	if (ofl < 0)
1262	>	error(USER, "bad output file specification");
1263	>	oent = lu_find(&ofiletab, oname);
1264	>	if (oent->data != NULL) {
1265	>	sout = *(STREAMOUT *)oent->data;
1266	>	} else {
1267	>	sout.reclen = 0;
1268	>	sout.outpipe = 0;
1269	>	sout.xr = xres; sout.yr = yres;
1270	>	sout.ofp = NULL;
1271	>	}
1272	>	if (sout.ofp == NULL) { /* open output as input */
1273	>	sout.ofp = fopen(oname, fmode);
1274	>	if (sout.ofp == NULL) {
1275	>	if (j)
1276	>	break;  /* assume end of modifier */
1277	>	sprintf(errmsg, "missing reload file '%s'",
1278	>	oname);
1279	>	error(WARNING, errmsg);
1280	>	break;
1281	>	}
1282	>	if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1283	>	sprintf(errmsg, "format mismatch for '%s'",
1284	>	oname);
1285	>	error(USER, errmsg);
1286	>	}
1287	>	if ((sout.xr > 0) & (sout.yr > 0) &&
1288	>	(!fscnresolu(&xr, &yr, sout.ofp) ||
1289	>	(xr != sout.xr) |
1290	>	(yr != sout.yr))) {
1291	>	sprintf(errmsg, "resolution mismatch for '%s'",
1292	>	oname);
1293	>	error(USER, errmsg);
1294	>	}
1295	>	}
1296	>	/* read in RGB value */
1297	>	if (!get_contrib(rgbv, sout.ofp)) {
1298	>	if (!j) {
1299	>	fclose(sout.ofp);
1300	>	break;          /* ignore empty file */
1301	>	}
1302	>	if (j < mp->nbins) {
1303	>	sprintf(errmsg, "missing data in '%s'",
1304	>	oname);
1305	>	error(USER, errmsg);
1306	>	}
1307	>	break;
1308	>	}
1309	>	if (j >= mp->nbins)             /* grow modifier size */
1310	>	ment->data = (char *)(mp = growmodifier(mp, j+1));
1311	>	copycolor(mp->cbin[j], rgbv);
1312	>	if (oent->key == NULL)          /* new file entry */
1313	>	oent->key = strcpy((char *)
1314	>	malloc(strlen(oname)+1), oname);
1315	>	if (oent->data == NULL)
1316	>	oent->data = (char *)malloc(sizeof(STREAMOUT));
1317	>	*(STREAMOUT *)oent->data = sout;
1318	>	}
1319	>	}
1320	>	lu_doall(&ofiletab, myclose, NULL);     /* close all files */
1321	>	}
1322	>
1323	>	/* seek on the given output file */
1324	>	static int
1325	>	myseeko(const LUENT *e, void *p)
1326	>	{
1327	>	STREAMOUT       *sop = (STREAMOUT *)e->data;
1328	>	off_t           nbytes = *(off_t *)p;
1329	>
1330	>	if (sop->reclen > 1)
1331	>	nbytes = nbytes * sop->reclen;
1332	>	if (fseeko(sop->ofp, nbytes, SEEK_CUR) < 0) {
1333	>	sprintf(errmsg, "seek error on file '%s'", e->key);
1334	>	error(SYSTEM, errmsg);
1335	>	}
1336	>	return 0;
1337	>	}
1338	>
1339	>	/* recover output if possible */
1340	>	void
1341	>	recover_output(FILE *fin)
1342	>	{
1343	>	off_t           lastout = -1;
1344	>	int             outvsiz, recsiz;
1345	>	char            *outvfmt;
1346	>	int             i, j;
1347	>	MODCONT         *mp;
1348	>	int             ofl;
1349	>	char            oname[1024];
1350	>	LUENT           *ment, *oent;
1351	>	STREAMOUT       sout;
1352	>	off_t           nvals;
1353	>	int             xr, yr;
1354	>
1355	>	switch (outfmt) {
1356	>	case 'a':
1357	>	error(USER, "cannot recover ASCII output");
1358	>	return;
1359	>	case 'f':
1360	>	outvsiz = sizeof(float)*3;
1361	>	outvfmt = "float";
1362	>	break;
1363	>	case 'd':
1364	>	outvsiz = sizeof(double)*3;
1365	>	outvfmt = "double";
1366	>	break;
1367	>	case 'c':
1368	>	outvsiz = sizeof(COLR);
1369	>	outvfmt = COLRFMT;
1370	>	break;
1371	>	default:
1372	>	error(INTERNAL, "botched output format");
1373	>	return;
1374	>	}
1375	>	/* check modifier outputs */
1376	>	for (i = 0; i < nmods; i++) {
1377	>	ment = lu_find(&modconttab,modname[i]);
1378	>	mp = (MODCONT *)ment->data;
1379	>	if (mp->outspec == NULL)
1380	>	error(USER, "cannot recover from stdout");
1381	>	if (mp->outspec[0] == '!')
1382	>	error(USER, "cannot recover from command");
1383	>	for (j = 0; ; j++) {            /* check each bin's file */
1384	>	ofl = ofname(oname, mp->outspec, mp->modname, j);
1385	>	if (ofl < 0)
1386	>	error(USER, "bad output file specification");
1387	>	oent = lu_find(&ofiletab, oname);
1388	>	if (oent->data != NULL) {
1389	>	sout = *(STREAMOUT *)oent->data;
1390	>	} else {
1391	>	sout.reclen = 0;
1392	>	sout.outpipe = 0;
1393	>	sout.ofp = NULL;
1394	>	}
1395	>	if (sout.ofp != NULL) { /* already open? */
1396	>	if (ofl & OF_BIN)
1397	>	continue;
1398	>	break;
1399	>	}
1400	>	/* open output */
1401	>	sout.ofp = fopen(oname, "rb+");
1402	>	if (sout.ofp == NULL) {
1403	>	if (j)
1404	>	break;  /* assume end of modifier */
1405	>	sprintf(errmsg, "missing recover file '%s'",
1406	>	oname);
1407	>	error(WARNING, errmsg);
1408	>	break;
1409	>	}
1410	>	nvals = lseek(fileno(sout.ofp), 0, SEEK_END);
1411	>	if (nvals <= 0) {
1412	>	lastout = 0;    /* empty output, quit here */
1413	>	fclose(sout.ofp);
1414	>	break;
1415	>	}
1416	>	if (!sout.reclen) {
1417	>	if (!(ofl & OF_BIN)) {
1418	>	sprintf(errmsg,
1419	>	"need -bn to recover file '%s'",
1420	>	oname);
1421	>	error(USER, errmsg);
1422	>	}
1423	>	recsiz = outvsiz;
1424	>	} else
1425	>	recsiz = outvsiz * sout.reclen;
1426	>
1427	>	lseek(fileno(sout.ofp), 0, SEEK_SET);
1428	>	if (header && checkheader(sout.ofp, outvfmt, NULL) != 1) {
1429	>	sprintf(errmsg, "format mismatch for '%s'",
1430	>	oname);
1431	>	error(USER, errmsg);
1432	>	}
1433	>	sout.xr = xres; sout.yr = yres;
1434	>	if ((sout.xr > 0) & (sout.yr > 0) &&
1435	>	(!fscnresolu(&xr, &yr, sout.ofp) ||
1436	>	(xr != sout.xr) |
1437	>	(yr != sout.yr))) {
1438	>	sprintf(errmsg, "resolution mismatch for '%s'",
1439	>	oname);
1440	>	error(USER, errmsg);
1441	>	}
1442	>	nvals = (nvals - (off_t)ftell(sout.ofp)) / recsiz;
1443	>	if ((lastout < 0) | (nvals < lastout))
1444	>	lastout = nvals;
1445	>	if (oent->key == NULL)  /* new entry */
1446	>	oent->key = strcpy((char *)
1447	>	malloc(strlen(oname)+1), oname);
1448	>	if (oent->data == NULL)
1449	>	oent->data = (char *)malloc(sizeof(STREAMOUT));
1450	>	*(STREAMOUT *)oent->data = sout;
1451	>	if (!(ofl & OF_BIN))
1452	>	break;          /* no bin separation */
1453	>	}
1454	>	if (!lastout) {                 /* empty output */
1455	>	error(WARNING, "no previous data to recover");
1456	>	lu_done(&ofiletab);     /* reclose all outputs */
1457	>	return;
1458	>	}
1459	>	if (j > mp->nbins)              /* reallocate modifier bins */
1460	>	ment->data = (char *)(mp = growmodifier(mp, j));
1461	>	}
1462	>	if (lastout < 0) {
1463	>	error(WARNING, "no output files to recover");
1464	>	return;
1465	>	}
1466	>	if (raysleft && lastout >= raysleft) {
1467	>	error(WARNING, "output appears to be complete");
1468	>	/* XXX should read & discard input? */
1469	>	quit(0);
1470	>	}
1471	>	/* seek on all files */
1472	>	nvals = lastout * outvsiz;
1473	>	lu_doall(&ofiletab, myseeko, &nvals);
1474	>	/* skip repeated input */
1475	>	for (nvals = 0; nvals < lastout; nvals++)
1476	>	if (getinp(oname, fin) < 0)
1477	>	error(USER, "unexpected EOF on input");
1478	>	lastray = lastdone = (unsigned long)lastout;
1479	>	if (raysleft)
1480	>	raysleft -= lastray;
1481		}

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