| 1 |
#ifndef lint
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| 2 |
static const char RCSid[] = "$Id: rtmain.c,v 2.11 2005/06/02 04:47:27 greg Exp $";
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| 3 |
#endif
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/*
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| 5 |
* rtmain.c - main for rtrace per-ray calculation program
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| 6 |
*/
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#include "copyright.h"
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#include <signal.h>
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#include "platform.h"
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#include "rtprocess.h" /* getpid() */
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#include "resolu.h"
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#include "ray.h"
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#include "source.h"
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#include "ambient.h"
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#include "random.h"
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#include "paths.h"
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| 21 |
/* persistent processes define */
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| 22 |
#ifdef F_SETLKW
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| 23 |
#define PERSIST 1 /* normal persist */
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| 24 |
#define PARALLEL 2 /* parallel persist */
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| 25 |
#define PCHILD 3 /* child of normal persist */
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| 26 |
#endif
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| 27 |
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| 28 |
char *progname; /* argv[0] */
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| 29 |
char *octname; /* octree name */
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| 30 |
char *sigerr[NSIG]; /* signal error messages */
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| 31 |
char *shm_boundary = NULL; /* boundary of shared memory */
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char *errfile = NULL; /* error output file */
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| 34 |
extern char *formstr(); /* string from format */
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extern int inform; /* input format */
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extern int outform; /* output format */
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| 37 |
extern char *outvals; /* output values */
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| 38 |
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| 39 |
extern int hresolu; /* horizontal resolution */
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extern int vresolu; /* vertical resolution */
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extern int imm_irrad; /* compute immediate irradiance? */
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extern int lim_dist; /* limit distance? */
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extern char *tralist[]; /* list of modifers to trace (or no) */
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extern int traincl; /* include == 1, exclude == 0 */
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static int loadflags = ~IO_FILES; /* what to load from octree */
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| 50 |
static void onsig(int signo);
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static void sigdie(int signo, char *msg);
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static void printdefaults(void);
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int
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main(int argc, char *argv[])
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{
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#define check(ol,al) if (argv[i][ol] || \
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badarg(argc-i-1,argv+i+1,al)) \
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goto badopt
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#define bool(olen,var) switch (argv[i][olen]) { \
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case '\0': var = !var; break; \
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case 'y': case 'Y': case 't': case 'T': \
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case '+': case '1': var = 1; break; \
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case 'n': case 'N': case 'f': case 'F': \
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case '-': case '0': var = 0; break; \
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default: goto badopt; }
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int persist = 0;
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char **tralp;
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int duped1;
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int rval;
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int i;
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/* global program name */
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progname = argv[0] = fixargv0(argv[0]);
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/* option city */
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for (i = 1; i < argc; i++) {
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/* expand arguments */
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while ((rval = expandarg(&argc, &argv, i)) > 0)
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;
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if (rval < 0) {
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sprintf(errmsg, "cannot expand '%s'", argv[i]);
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error(SYSTEM, errmsg);
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}
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if (argv[i] == NULL || argv[i][0] != '-')
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break; /* break from options */
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if (!strcmp(argv[i], "-version")) {
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puts(VersionID);
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quit(0);
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}
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| 90 |
if (!strcmp(argv[i], "-defaults") ||
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!strcmp(argv[i], "-help")) {
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printdefaults();
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quit(0);
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}
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| 95 |
rval = getrenderopt(argc-i, argv+i);
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if (rval >= 0) {
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i += rval;
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continue;
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}
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switch (argv[i][1]) {
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case 'x': /* x resolution */
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check(2,"i");
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hresolu = atoi(argv[++i]);
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break;
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case 'y': /* y resolution */
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check(2,"i");
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vresolu = atoi(argv[++i]);
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break;
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case 'w': /* warnings */
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rval = erract[WARNING].pf != NULL;
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bool(2,rval);
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if (rval) erract[WARNING].pf = wputs;
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else erract[WARNING].pf = NULL;
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break;
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case 'e': /* error file */
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check(2,"s");
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errfile = argv[++i];
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break;
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case 'l': /* limit distance */
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if (argv[i][2] != 'd')
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goto badopt;
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bool(3,lim_dist);
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break;
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case 'I': /* immed. irradiance */
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bool(2,imm_irrad);
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break;
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case 'f': /* format i/o */
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switch (argv[i][2]) {
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case 'a': /* ascii */
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case 'f': /* float */
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case 'd': /* double */
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inform = argv[i][2];
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break;
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default:
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goto badopt;
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}
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switch (argv[i][3]) {
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case '\0':
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outform = inform;
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break;
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case 'a': /* ascii */
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case 'f': /* float */
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case 'd': /* double */
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case 'c': /* color */
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check(4,"");
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outform = argv[i][3];
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break;
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default:
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goto badopt;
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}
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break;
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case 'o': /* output */
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outvals = argv[i]+2;
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break;
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case 'h': /* header output */
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rval = loadflags & IO_INFO;
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bool(2,rval);
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loadflags = rval ? loadflags | IO_INFO :
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loadflags & ~IO_INFO;
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break;
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case 't': /* trace */
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switch (argv[i][2]) {
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case 'i': /* include */
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case 'I':
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check(3,"s");
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if (traincl != 1) {
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traincl = 1;
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tralp = tralist;
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}
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if (argv[i][2] == 'I') { /* file */
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rval = wordfile(tralp,
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getpath(argv[++i],getrlibpath(),R_OK));
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if (rval < 0) {
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sprintf(errmsg,
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"cannot open trace include file \"%s\"",
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argv[i]);
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error(SYSTEM, errmsg);
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}
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tralp += rval;
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} else {
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*tralp++ = argv[++i];
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*tralp = NULL;
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}
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break;
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case 'e': /* exclude */
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case 'E':
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check(3,"s");
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if (traincl != 0) {
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traincl = 0;
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tralp = tralist;
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}
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if (argv[i][2] == 'E') { /* file */
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rval = wordfile(tralp,
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getpath(argv[++i],getrlibpath(),R_OK));
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if (rval < 0) {
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sprintf(errmsg,
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"cannot open trace exclude file \"%s\"",
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argv[i]);
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error(SYSTEM, errmsg);
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}
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tralp += rval;
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} else {
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*tralp++ = argv[++i];
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*tralp = NULL;
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}
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break;
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default:
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goto badopt;
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}
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break;
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#ifdef PERSIST
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case 'P': /* persist file */
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if (argv[i][2] == 'P') {
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check(3,"s");
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persist = PARALLEL;
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} else {
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check(2,"s");
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persist = PERSIST;
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}
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persistfile(argv[++i]);
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break;
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#endif
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default:
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goto badopt;
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}
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}
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/* initialize object types */
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initotypes();
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/* initialize urand */
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initurand(2048);
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srandom(rand_samp ? (long)time(0) : 0L);
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/* set up signal handling */
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sigdie(SIGINT, "Interrupt");
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#ifdef SIGHUP
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sigdie(SIGHUP, "Hangup");
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#endif
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sigdie(SIGTERM, "Terminate");
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#ifdef SIGPIPE
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sigdie(SIGPIPE, "Broken pipe");
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#endif
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#ifdef SIGALRM
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sigdie(SIGALRM, "Alarm clock");
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#endif
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#ifdef SIGXCPU
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sigdie(SIGXCPU, "CPU limit exceeded");
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sigdie(SIGXFSZ, "File size exceeded");
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#endif
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/* open error file */
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if (errfile != NULL) {
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| 250 |
if (freopen(errfile, "a", stderr) == NULL)
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quit(2);
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| 252 |
fprintf(stderr, "**************\n*** PID %5d: ",
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| 253 |
getpid());
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printargs(argc, argv, stderr);
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putc('\n', stderr);
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fflush(stderr);
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}
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#ifdef NICE
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nice(NICE); /* lower priority */
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#endif
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/* get octree */
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if (i == argc)
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octname = NULL;
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else if (i == argc-1)
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octname = argv[i];
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else
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goto badopt;
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if (octname == NULL)
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error(USER, "missing octree argument");
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/* set up output */
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#ifdef PERSIST
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if (persist) {
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duped1 = dup(fileno(stdout)); /* don't lose our output */
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| 274 |
openheader();
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}
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#endif
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if (outform != 'a')
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| 278 |
SET_FILE_BINARY(stdout);
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| 279 |
readoct(octname, loadflags, &thescene, NULL);
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| 280 |
nsceneobjs = nobjects;
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| 281 |
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| 282 |
if (loadflags & IO_INFO) { /* print header */
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| 283 |
printargs(i, argv, stdout);
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| 284 |
printf("SOFTWARE= %s\n", VersionID);
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| 285 |
fputnow(stdout);
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| 286 |
fputformat(formstr(outform), stdout);
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| 287 |
putchar('\n');
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| 288 |
}
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| 289 |
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| 290 |
marksources(); /* find and mark sources */
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| 291 |
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| 292 |
setambient(); /* initialize ambient calculation */
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| 293 |
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| 294 |
#ifdef PERSIST
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| 295 |
if (persist) {
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| 296 |
fflush(stdout);
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| 297 |
/* reconnect stdout */
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| 298 |
dup2(duped1, fileno(stdout));
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| 299 |
close(duped1);
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| 300 |
if (persist == PARALLEL) { /* multiprocessing */
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| 301 |
preload_objs(); /* preload scene */
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| 302 |
shm_boundary = (char *)malloc(16);
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| 303 |
strcpy(shm_boundary, "SHM_BOUNDARY");
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| 304 |
while ((rval=fork()) == 0) { /* keep on forkin' */
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| 305 |
pflock(1);
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| 306 |
pfhold();
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| 307 |
}
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| 308 |
if (rval < 0)
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| 309 |
error(SYSTEM, "cannot fork child for persist function");
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| 310 |
pfdetach(); /* parent exits */
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| 311 |
}
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| 312 |
}
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| 313 |
runagain:
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if (persist)
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| 315 |
dupheader(); /* send header to stdout */
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#endif
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| 317 |
/* trace rays */
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| 318 |
rtrace(NULL);
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| 319 |
/* flush ambient file */
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| 320 |
ambsync();
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| 321 |
#ifdef PERSIST
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| 322 |
if (persist == PERSIST) { /* first run-through */
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| 323 |
if ((rval=fork()) == 0) { /* child loops until killed */
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| 324 |
pflock(1);
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| 325 |
persist = PCHILD;
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| 326 |
} else { /* original process exits */
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| 327 |
if (rval < 0)
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| 328 |
error(SYSTEM, "cannot fork child for persist function");
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| 329 |
pfdetach(); /* parent exits */
|
| 330 |
}
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| 331 |
}
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| 332 |
if (persist == PCHILD) { /* wait for a signal then go again */
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| 333 |
close(duped1); /* release output handle */
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| 334 |
pfhold();
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| 335 |
raynum = nrays = 0; /* reinitialize */
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| 336 |
goto runagain;
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| 337 |
}
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| 338 |
#endif
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| 339 |
quit(0);
|
| 340 |
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| 341 |
badopt:
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| 342 |
sprintf(errmsg, "command line error at '%s'", argv[i]);
|
| 343 |
error(USER, errmsg);
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| 344 |
return 1; /* pro forma return */
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| 345 |
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| 346 |
#undef check
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| 347 |
#undef bool
|
| 348 |
}
|
| 349 |
|
| 350 |
|
| 351 |
void
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| 352 |
wputs( /* warning output function */
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| 353 |
char *s
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| 354 |
)
|
| 355 |
{
|
| 356 |
int lasterrno = errno;
|
| 357 |
eputs(s);
|
| 358 |
errno = lasterrno;
|
| 359 |
}
|
| 360 |
|
| 361 |
|
| 362 |
void
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| 363 |
eputs( /* put string to stderr */
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| 364 |
register char *s
|
| 365 |
)
|
| 366 |
{
|
| 367 |
static int midline = 0;
|
| 368 |
|
| 369 |
if (!*s)
|
| 370 |
return;
|
| 371 |
if (!midline++) {
|
| 372 |
fputs(progname, stderr);
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| 373 |
fputs(": ", stderr);
|
| 374 |
}
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| 375 |
fputs(s, stderr);
|
| 376 |
if (s[strlen(s)-1] == '\n') {
|
| 377 |
fflush(stderr);
|
| 378 |
midline = 0;
|
| 379 |
}
|
| 380 |
}
|
| 381 |
|
| 382 |
|
| 383 |
static void
|
| 384 |
onsig( /* fatal signal */
|
| 385 |
int signo
|
| 386 |
)
|
| 387 |
{
|
| 388 |
static int gotsig = 0;
|
| 389 |
|
| 390 |
if (gotsig++) /* two signals and we're gone! */
|
| 391 |
_exit(signo);
|
| 392 |
|
| 393 |
#ifdef SIGALRM
|
| 394 |
alarm(15); /* allow 15 seconds to clean up */
|
| 395 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */
|
| 396 |
#endif
|
| 397 |
eputs("signal - ");
|
| 398 |
eputs(sigerr[signo]);
|
| 399 |
eputs("\n");
|
| 400 |
quit(3);
|
| 401 |
}
|
| 402 |
|
| 403 |
|
| 404 |
static void
|
| 405 |
sigdie( /* set fatal signal */
|
| 406 |
int signo,
|
| 407 |
char *msg
|
| 408 |
)
|
| 409 |
{
|
| 410 |
if (signal(signo, onsig) == SIG_IGN)
|
| 411 |
signal(signo, SIG_IGN);
|
| 412 |
sigerr[signo] = msg;
|
| 413 |
}
|
| 414 |
|
| 415 |
|
| 416 |
static void
|
| 417 |
printdefaults(void) /* print default values to stdout */
|
| 418 |
{
|
| 419 |
register char *cp;
|
| 420 |
|
| 421 |
if (imm_irrad)
|
| 422 |
printf("-I+\t\t\t\t# immediate irradiance on\n");
|
| 423 |
printf("-x %-9d\t\t\t# x resolution (flush interval)\n", hresolu);
|
| 424 |
printf("-y %-9d\t\t\t# y resolution\n", vresolu);
|
| 425 |
printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" :
|
| 426 |
"-ld-\t\t\t\t# limit distance off\n");
|
| 427 |
printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-',
|
| 428 |
loadflags & IO_INFO ? "output" : "no");
|
| 429 |
printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
|
| 430 |
inform, outform, formstr(inform), formstr(outform));
|
| 431 |
printf("-o%-9s\t\t\t# output", outvals);
|
| 432 |
for (cp = outvals; *cp; cp++)
|
| 433 |
switch (*cp) {
|
| 434 |
case 't': case 'T': printf(" trace"); break;
|
| 435 |
case 'o': printf(" origin"); break;
|
| 436 |
case 'd': printf(" direction"); break;
|
| 437 |
case 'v': printf(" value"); break;
|
| 438 |
case 'l': printf(" length"); break;
|
| 439 |
case 'L': printf(" first_length"); break;
|
| 440 |
case 'p': printf(" point"); break;
|
| 441 |
case 'n': printf(" normal"); break;
|
| 442 |
case 'N': printf(" unperturbed_normal"); break;
|
| 443 |
case 's': printf(" surface"); break;
|
| 444 |
case 'w': printf(" weight"); break;
|
| 445 |
case 'm': printf(" modifier"); break;
|
| 446 |
case 'M': printf(" material"); break;
|
| 447 |
case 'W': printf(" contribution"); break;
|
| 448 |
case '-': printf(" stroke"); break;
|
| 449 |
}
|
| 450 |
putchar('\n');
|
| 451 |
printf(erract[WARNING].pf != NULL ?
|
| 452 |
"-w+\t\t\t\t# warning messages on\n" :
|
| 453 |
"-w-\t\t\t\t# warning messages off\n");
|
| 454 |
print_rdefaults();
|
| 455 |
}
|
