| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rtmain.c,v 2.16 2008/04/18 18:06:29 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* rtmain.c - main for rtrace per-ray calculation program |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
#include <signal.h> |
| 11 |
|
| 12 |
#include "platform.h" |
| 13 |
#include "rtprocess.h" /* getpid() */ |
| 14 |
#include "resolu.h" |
| 15 |
#include "ray.h" |
| 16 |
#include "source.h" |
| 17 |
#include "ambient.h" |
| 18 |
#include "random.h" |
| 19 |
#include "paths.h" |
| 20 |
|
| 21 |
/* persistent processes define */ |
| 22 |
#ifdef F_SETLKW |
| 23 |
#define PERSIST 1 /* normal persist */ |
| 24 |
#define PARALLEL 2 /* parallel persist */ |
| 25 |
#define PCHILD 3 /* child of normal persist */ |
| 26 |
#endif |
| 27 |
|
| 28 |
char *progname; /* argv[0] */ |
| 29 |
char *octname; /* octree name */ |
| 30 |
char *sigerr[NSIG]; /* signal error messages */ |
| 31 |
char *shm_boundary = NULL; /* boundary of shared memory */ |
| 32 |
char *errfile = NULL; /* error output file */ |
| 33 |
|
| 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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extern char *outvals; /* output values */ |
| 38 |
|
| 39 |
extern int hresolu; /* horizontal resolution */ |
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extern int vresolu; /* vertical resolution */ |
| 41 |
|
| 42 |
extern int imm_irrad; /* compute immediate irradiance? */ |
| 43 |
extern int lim_dist; /* limit distance? */ |
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|
| 45 |
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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|
| 48 |
static int loadflags = ~IO_FILES; /* what to load from octree */ |
| 49 |
|
| 50 |
static void onsig(int signo); |
| 51 |
static void sigdie(int signo, char *msg); |
| 52 |
static void printdefaults(void); |
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|
| 54 |
|
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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] || \ |
| 59 |
badarg(argc-i-1,argv+i+1,al)) \ |
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goto badopt |
| 61 |
#define bool(olen,var) switch (argv[i][olen]) { \ |
| 62 |
case '\0': var = !var; break; \ |
| 63 |
case 'y': case 'Y': case 't': case 'T': \ |
| 64 |
case '+': case '1': var = 1; break; \ |
| 65 |
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; |
| 72 |
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 */ |
| 78 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
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; |
| 80 |
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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} |
| 84 |
if (argv[i] == NULL || argv[i][0] != '-') |
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break; /* break from options */ |
| 86 |
if (!strcmp(argv[i], "-version")) { |
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puts(VersionID); |
| 88 |
quit(0); |
| 89 |
} |
| 90 |
if (!strcmp(argv[i], "-defaults") || |
| 91 |
!strcmp(argv[i], "-help")) { |
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printdefaults(); |
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quit(0); |
| 94 |
} |
| 95 |
rval = getrenderopt(argc-i, argv+i); |
| 96 |
if (rval >= 0) { |
| 97 |
i += rval; |
| 98 |
continue; |
| 99 |
} |
| 100 |
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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if (rand_samp) { |
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srandom((long)time(0)); |
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initurand(0); |
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} else { |
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srandom(0L); |
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initurand(2048); |
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} |
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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 */ |
| 254 |
if (errfile != NULL) { |
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if (freopen(errfile, "a", stderr) == NULL) |
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quit(2); |
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fprintf(stderr, "**************\n*** PID %5d: ", |
| 258 |
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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} |
| 263 |
#ifdef NICE |
| 264 |
nice(NICE); /* lower priority */ |
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#endif |
| 266 |
/* get octree */ |
| 267 |
if (i == argc) |
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octname = NULL; |
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else if (i == argc-1) |
| 270 |
octname = argv[i]; |
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else |
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goto badopt; |
| 273 |
if (octname == NULL) |
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error(USER, "missing octree argument"); |
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/* set up output */ |
| 276 |
#ifdef PERSIST |
| 277 |
if (persist) { |
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duped1 = dup(fileno(stdout)); /* don't lose our output */ |
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openheader(); |
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} |
| 281 |
#endif |
| 282 |
if (outform != 'a') |
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SET_FILE_BINARY(stdout); |
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readoct(octname, loadflags, &thescene, NULL); |
| 285 |
nsceneobjs = nobjects; |
| 286 |
|
| 287 |
if (loadflags & IO_INFO) { /* print header */ |
| 288 |
printargs(i, argv, stdout); |
| 289 |
printf("SOFTWARE= %s\n", VersionID); |
| 290 |
fputnow(stdout); |
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fputformat(formstr(outform), stdout); |
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putchar('\n'); |
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} |
| 294 |
|
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marksources(); /* find and mark sources */ |
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|
| 297 |
setambient(); /* initialize ambient calculation */ |
| 298 |
|
| 299 |
#ifdef PERSIST |
| 300 |
if (persist) { |
| 301 |
fflush(stdout); |
| 302 |
/* reconnect stdout */ |
| 303 |
dup2(duped1, fileno(stdout)); |
| 304 |
close(duped1); |
| 305 |
if (persist == PARALLEL) { /* multiprocessing */ |
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preload_objs(); /* preload scene */ |
| 307 |
shm_boundary = (char *)malloc(16); |
| 308 |
strcpy(shm_boundary, "SHM_BOUNDARY"); |
| 309 |
while ((rval=fork()) == 0) { /* keep on forkin' */ |
| 310 |
pflock(1); |
| 311 |
pfhold(); |
| 312 |
ambsync(); /* load new values */ |
| 313 |
} |
| 314 |
if (rval < 0) |
| 315 |
error(SYSTEM, "cannot fork child for persist function"); |
| 316 |
pfdetach(); /* parent will run then exit */ |
| 317 |
} |
| 318 |
} |
| 319 |
runagain: |
| 320 |
if (persist) |
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dupheader(); /* send header to stdout */ |
| 322 |
#endif |
| 323 |
/* trace rays */ |
| 324 |
rtrace(NULL); |
| 325 |
/* flush ambient file */ |
| 326 |
ambsync(); |
| 327 |
#ifdef PERSIST |
| 328 |
if (persist == PERSIST) { /* first run-through */ |
| 329 |
if ((rval=fork()) == 0) { /* child loops until killed */ |
| 330 |
pflock(1); |
| 331 |
persist = PCHILD; |
| 332 |
} else { /* original process exits */ |
| 333 |
if (rval < 0) |
| 334 |
error(SYSTEM, "cannot fork child for persist function"); |
| 335 |
pfdetach(); /* parent exits */ |
| 336 |
} |
| 337 |
} |
| 338 |
if (persist == PCHILD) { /* wait for a signal then go again */ |
| 339 |
pfhold(); |
| 340 |
raynum = nrays = 0; /* reinitialize */ |
| 341 |
goto runagain; |
| 342 |
} |
| 343 |
#endif |
| 344 |
quit(0); |
| 345 |
|
| 346 |
badopt: |
| 347 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
| 348 |
error(USER, errmsg); |
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return 1; /* pro forma return */ |
| 350 |
|
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#undef check |
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#undef bool |
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} |
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|
| 355 |
|
| 356 |
void |
| 357 |
wputs( /* warning output function */ |
| 358 |
char *s |
| 359 |
) |
| 360 |
{ |
| 361 |
int lasterrno = errno; |
| 362 |
eputs(s); |
| 363 |
errno = lasterrno; |
| 364 |
} |
| 365 |
|
| 366 |
|
| 367 |
void |
| 368 |
eputs( /* put string to stderr */ |
| 369 |
register char *s |
| 370 |
) |
| 371 |
{ |
| 372 |
static int midline = 0; |
| 373 |
|
| 374 |
if (!*s) |
| 375 |
return; |
| 376 |
if (!midline++) { |
| 377 |
fputs(progname, stderr); |
| 378 |
fputs(": ", stderr); |
| 379 |
} |
| 380 |
fputs(s, stderr); |
| 381 |
if (s[strlen(s)-1] == '\n') { |
| 382 |
fflush(stderr); |
| 383 |
midline = 0; |
| 384 |
} |
| 385 |
} |
| 386 |
|
| 387 |
|
| 388 |
static void |
| 389 |
onsig( /* fatal signal */ |
| 390 |
int signo |
| 391 |
) |
| 392 |
{ |
| 393 |
static int gotsig = 0; |
| 394 |
|
| 395 |
if (gotsig++) /* two signals and we're gone! */ |
| 396 |
_exit(signo); |
| 397 |
|
| 398 |
#ifdef SIGALRM |
| 399 |
alarm(15); /* allow 15 seconds to clean up */ |
| 400 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
| 401 |
#endif |
| 402 |
eputs("signal - "); |
| 403 |
eputs(sigerr[signo]); |
| 404 |
eputs("\n"); |
| 405 |
quit(3); |
| 406 |
} |
| 407 |
|
| 408 |
|
| 409 |
static void |
| 410 |
sigdie( /* set fatal signal */ |
| 411 |
int signo, |
| 412 |
char *msg |
| 413 |
) |
| 414 |
{ |
| 415 |
if (signal(signo, onsig) == SIG_IGN) |
| 416 |
signal(signo, SIG_IGN); |
| 417 |
sigerr[signo] = msg; |
| 418 |
} |
| 419 |
|
| 420 |
|
| 421 |
static void |
| 422 |
printdefaults(void) /* print default values to stdout */ |
| 423 |
{ |
| 424 |
register char *cp; |
| 425 |
|
| 426 |
if (imm_irrad) |
| 427 |
printf("-I+\t\t\t\t# immediate irradiance on\n"); |
| 428 |
printf("-x %-9d\t\t\t# x resolution (flush interval)\n", hresolu); |
| 429 |
printf("-y %-9d\t\t\t# y resolution\n", vresolu); |
| 430 |
printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
| 431 |
"-ld-\t\t\t\t# limit distance off\n"); |
| 432 |
printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-', |
| 433 |
loadflags & IO_INFO ? "output" : "no"); |
| 434 |
printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
| 435 |
inform, outform, formstr(inform), formstr(outform)); |
| 436 |
printf("-o%-9s\t\t\t# output", outvals); |
| 437 |
for (cp = outvals; *cp; cp++) |
| 438 |
switch (*cp) { |
| 439 |
case 't': case 'T': printf(" trace"); break; |
| 440 |
case 'o': printf(" origin"); break; |
| 441 |
case 'd': printf(" direction"); break; |
| 442 |
case 'v': printf(" value"); break; |
| 443 |
case 'V': printf(" contribution"); break; |
| 444 |
case 'l': printf(" length"); break; |
| 445 |
case 'L': printf(" first_length"); break; |
| 446 |
case 'p': printf(" point"); break; |
| 447 |
case 'n': printf(" normal"); break; |
| 448 |
case 'N': printf(" unperturbed_normal"); break; |
| 449 |
case 's': printf(" surface"); break; |
| 450 |
case 'w': printf(" weight"); break; |
| 451 |
case 'W': printf(" coefficient"); break; |
| 452 |
case 'm': printf(" modifier"); break; |
| 453 |
case 'M': printf(" material"); break; |
| 454 |
case '-': printf(" stroke"); break; |
| 455 |
} |
| 456 |
putchar('\n'); |
| 457 |
printf(erract[WARNING].pf != NULL ? |
| 458 |
"-w+\t\t\t\t# warning messages on\n" : |
| 459 |
"-w-\t\t\t\t# warning messages off\n"); |
| 460 |
print_rdefaults(); |
| 461 |
} |
