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#ifndef lint |
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static const char RCSid[] = "$Id: rtmain.c,v 2.12 2005/06/15 15:36:52 greg Exp $"; |
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#endif |
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/* |
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* rtmain.c - main for rtrace per-ray calculation program |
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*/ |
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|
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#include "copyright.h" |
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|
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#include <signal.h> |
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|
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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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|
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/* persistent processes define */ |
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#ifdef F_SETLKW |
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#define PERSIST 1 /* normal persist */ |
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#define PARALLEL 2 /* parallel persist */ |
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#define PCHILD 3 /* child of normal persist */ |
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#endif |
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|
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char *progname; /* argv[0] */ |
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char *octname; /* octree name */ |
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char *sigerr[NSIG]; /* signal error messages */ |
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char *shm_boundary = NULL; /* boundary of shared memory */ |
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char *errfile = NULL; /* error output file */ |
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|
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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 */ |
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|
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extern int hresolu; /* horizontal resolution */ |
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extern int vresolu; /* vertical resolution */ |
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|
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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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|
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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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|
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static int loadflags = ~IO_FILES; /* what to load from octree */ |
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|
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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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|
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|
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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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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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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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if (freopen(errfile, "a", stderr) == NULL) |
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quit(2); |
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fprintf(stderr, "**************\n*** PID %5d: ", |
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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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openheader(); |
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} |
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#endif |
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if (outform != 'a') |
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SET_FILE_BINARY(stdout); |
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readoct(octname, loadflags, &thescene, NULL); |
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nsceneobjs = nobjects; |
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|
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if (loadflags & IO_INFO) { /* print header */ |
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printargs(i, argv, stdout); |
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printf("SOFTWARE= %s\n", VersionID); |
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fputnow(stdout); |
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fputformat(formstr(outform), stdout); |
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putchar('\n'); |
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} |
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|
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marksources(); /* find and mark sources */ |
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|
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setambient(); /* initialize ambient calculation */ |
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|
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#ifdef PERSIST |
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if (persist) { |
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fflush(stdout); |
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/* reconnect stdout */ |
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dup2(duped1, fileno(stdout)); |
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close(duped1); |
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if (persist == PARALLEL) { /* multiprocessing */ |
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preload_objs(); /* preload scene */ |
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shm_boundary = (char *)malloc(16); |
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strcpy(shm_boundary, "SHM_BOUNDARY"); |
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while ((rval=fork()) == 0) { /* keep on forkin' */ |
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pflock(1); |
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pfhold(); |
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} |
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if (rval < 0) |
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error(SYSTEM, "cannot fork child for persist function"); |
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pfdetach(); /* parent exits */ |
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} |
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} |
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runagain: |
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if (persist) |
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dupheader(); /* send header to stdout */ |
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#endif |
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/* trace rays */ |
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rtrace(NULL); |
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/* flush ambient file */ |
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ambsync(); |
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#ifdef PERSIST |
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if (persist == PERSIST) { /* first run-through */ |
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if ((rval=fork()) == 0) { /* child loops until killed */ |
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pflock(1); |
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persist = PCHILD; |
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} else { /* original process exits */ |
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if (rval < 0) |
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error(SYSTEM, "cannot fork child for persist function"); |
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pfdetach(); /* parent exits */ |
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} |
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} |
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if (persist == PCHILD) { /* wait for a signal then go again */ |
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close(duped1); /* release output handle */ |
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pfhold(); |
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raynum = nrays = 0; /* reinitialize */ |
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goto runagain; |
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} |
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#endif |
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quit(0); |
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|
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badopt: |
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sprintf(errmsg, "command line error at '%s'", argv[i]); |
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error(USER, errmsg); |
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return 1; /* pro forma return */ |
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|
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#undef check |
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#undef bool |
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} |
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|
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|
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void |
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wputs( /* warning output function */ |
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char *s |
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) |
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{ |
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int lasterrno = errno; |
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eputs(s); |
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errno = lasterrno; |
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} |
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|
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|
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void |
363 |
eputs( /* put string to stderr */ |
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register char *s |
365 |
) |
366 |
{ |
367 |
static int midline = 0; |
368 |
|
369 |
if (!*s) |
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return; |
371 |
if (!midline++) { |
372 |
fputs(progname, stderr); |
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fputs(": ", stderr); |
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} |
375 |
fputs(s, stderr); |
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if (s[strlen(s)-1] == '\n') { |
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fflush(stderr); |
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midline = 0; |
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} |
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} |
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|
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|
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static void |
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onsig( /* fatal signal */ |
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int signo |
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) |
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{ |
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static int gotsig = 0; |
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|
390 |
if (gotsig++) /* two signals and we're gone! */ |
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_exit(signo); |
392 |
|
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#ifdef SIGALRM |
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alarm(15); /* allow 15 seconds to clean up */ |
395 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
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#endif |
397 |
eputs("signal - "); |
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eputs(sigerr[signo]); |
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eputs("\n"); |
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quit(3); |
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} |
402 |
|
403 |
|
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static void |
405 |
sigdie( /* set fatal signal */ |
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int signo, |
407 |
char *msg |
408 |
) |
409 |
{ |
410 |
if (signal(signo, onsig) == SIG_IGN) |
411 |
signal(signo, SIG_IGN); |
412 |
sigerr[signo] = msg; |
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} |
414 |
|
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|
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static void |
417 |
printdefaults(void) /* print default values to stdout */ |
418 |
{ |
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register char *cp; |
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|
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 'V': printf(" contribution"); break; |
439 |
case 'l': printf(" length"); break; |
440 |
case 'L': printf(" first_length"); break; |
441 |
case 'p': printf(" point"); break; |
442 |
case 'n': printf(" normal"); break; |
443 |
case 'N': printf(" unperturbed_normal"); break; |
444 |
case 's': printf(" surface"); break; |
445 |
case 'w': printf(" weight"); break; |
446 |
case 'W': printf(" coefficient"); break; |
447 |
case 'm': printf(" modifier"); break; |
448 |
case 'M': printf(" material"); break; |
449 |
case '-': printf(" stroke"); break; |
450 |
} |
451 |
putchar('\n'); |
452 |
printf(erract[WARNING].pf != NULL ? |
453 |
"-w+\t\t\t\t# warning messages on\n" : |
454 |
"-w-\t\t\t\t# warning messages off\n"); |
455 |
print_rdefaults(); |
456 |
} |