| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rcmain.c,v 2.42 2025/06/05 18:26:46 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
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* rcmain.c - main for rtcontrib ray contribution tracer |
| 6 |
*/ |
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|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
#include <signal.h> |
| 11 |
#include <time.h> |
| 12 |
#include "rcontrib.h" |
| 13 |
#include "random.h" |
| 14 |
#include "source.h" |
| 15 |
#include "ambient.h" |
| 16 |
#include "pmapray.h" |
| 17 |
#include "pmapcontrib.h" |
| 18 |
|
| 19 |
int gargc; /* global argc */ |
| 20 |
char **gargv; /* global argv */ |
| 21 |
char *octname; /* global octree name */ |
| 22 |
|
| 23 |
char *sigerr[NSIG]; /* signal error messages */ |
| 24 |
|
| 25 |
int nproc = 1; /* number of processes requested */ |
| 26 |
int nchild = 0; /* number of children (-1 in child) */ |
| 27 |
|
| 28 |
int inpfmt = 'a'; /* input format */ |
| 29 |
int outfmt = 'a'; /* output format */ |
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|
| 31 |
int header = 1; /* output header? */ |
| 32 |
int force_open = 0; /* truncate existing output? */ |
| 33 |
int recover = 0; /* recover previous output? */ |
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int accumulate = 1; /* input rays per output record */ |
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int contrib = 0; /* computing contributions? */ |
| 36 |
|
| 37 |
int xres = 0; /* horizontal (scan) size */ |
| 38 |
int yres = 0; /* vertical resolution */ |
| 39 |
|
| 40 |
int using_stdout = 0; /* are we using stdout? */ |
| 41 |
|
| 42 |
int imm_irrad = 0; /* compute immediate irradiance? */ |
| 43 |
int lim_dist = 0; /* limit distance? */ |
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|
| 45 |
int report_intvl = 0; /* reporting interval (seconds) */ |
| 46 |
|
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char **modname = NULL; /* ordered modifier name list */ |
| 48 |
int nmods = 0; /* number of modifiers */ |
| 49 |
int modasiz = 0; /* allocated modifier array size */ |
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|
| 51 |
void (*addobjnotify[])() = {ambnotify, NULL}; |
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|
| 53 |
char RCCONTEXT[] = "RC."; /* our special evaluation context */ |
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|
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#if defined(_WIN32) || defined(_WIN64) |
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#define RCONTRIB_FEATURES "Accumulation\nSummation\nRecovery\n" \ |
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"ImmediateIrradiance\n" \ |
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"ProgressReporting\nDistanceLimiting\n" \ |
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"InputFormats=a,f,d\nOutputFormats=a,f,d,c\n" \ |
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"Outputs=V,W\n" \ |
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"OutputCS=RGB,spec\n" |
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#else |
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#define RCONTRIB_FEATURES "Multiprocessing\n" \ |
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"Accumulation\nSummation\nRecovery\n" \ |
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"ImmediateIrradiance\n" \ |
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"ProgressReporting\nDistanceLimiting\n" \ |
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"InputFormats=a,f,d\nOutputFormats=a,f,d,c\n" \ |
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"Outputs=V,W\n" \ |
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"OutputCS=RGB,spec\n" |
| 70 |
#endif |
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|
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static void |
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printdefaults(void) /* print default values to stdout */ |
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{ |
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printf("-c %-5d\t\t\t# accumulated rays per record\n", accumulate); |
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printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-', |
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contrib ? "contributions" : "coefficients"); |
| 78 |
if (imm_irrad) |
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printf("-I+\t\t\t\t# immediate irradiance on\n"); |
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printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc); |
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printf("-x %-9d\t\t\t# %s\n", xres, |
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yres && xres ? "x resolution" : "flush interval"); |
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printf("-y %-9d\t\t\t# y resolution\n", yres); |
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printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" : |
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"-ld-\t\t\t\t# limit distance off\n"); |
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printf(header ? "-h+\t\t\t\t# output header\n" : |
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"-h-\t\t\t\t# no header\n"); |
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printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n", |
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inpfmt, outfmt, formstr(inpfmt), formstr(outfmt)); |
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if (report_intvl > 0) |
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printf("-t %-9d\t\t\t# time between reports\n", report_intvl); |
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printf(erract[WARNING].pf != NULL ? |
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"-w+\t\t\t\t# warning messages on\n" : |
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"-w-\t\t\t\t# warning messages off\n"); |
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print_rdefaults(); |
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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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|
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if (gotsig++) /* two signals and we're gone! */ |
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_exit(signo); |
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|
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#ifdef SIGALRM |
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alarm(15); /* allow 15 seconds to clean up */ |
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signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
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#endif |
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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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} |
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|
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|
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static void |
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sigdie( /* set fatal signal */ |
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int signo, |
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char *msg |
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) |
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{ |
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if (signal(signo, onsig) == SIG_IGN) |
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signal(signo, SIG_IGN); |
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sigerr[signo] = msg; |
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} |
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|
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|
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/* set input/output format */ |
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static void |
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setformat(const char *fmt) |
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{ |
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switch (fmt[0]) { |
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case 'f': |
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case 'd': |
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SET_FILE_BINARY(stdin); |
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/* fall through */ |
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case 'a': |
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inpfmt = fmt[0]; |
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break; |
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default: |
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goto fmterr; |
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} |
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switch (fmt[1]) { |
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case '\0': |
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outfmt = inpfmt; |
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return; |
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case 'a': |
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case 'f': |
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case 'd': |
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case 'c': |
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outfmt = fmt[1]; |
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break; |
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default: |
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goto fmterr; |
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} |
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if (!fmt[2]) |
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return; |
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fmterr: |
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sprintf(errmsg, "Illegal i/o format: -f%s", fmt); |
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error(USER, errmsg); |
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} |
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|
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|
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/* Set overriding options */ |
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static void |
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override_options(void) |
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{ |
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shadthresh = 0; |
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ambssamp = 0; |
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ambacc = 0; |
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if (accumulate <= 0) /* no output flushing for single record */ |
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xres = yres = 0; |
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} |
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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 check_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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char *curout = NULL; |
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char *prms = NULL; |
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char *binval = NULL; |
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int bincnt = 0; |
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int rval; |
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int i; |
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/* global program name */ |
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argv[0] = fixargv0(argv[0]); |
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gargv = argv; |
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gargc = argc; |
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/* feature check only? */ |
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strcat(RFeatureList, RCONTRIB_FEATURES); |
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if (argc > 1 && !strcmp(argv[1], "-features")) |
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return feature_status(argc-2, argv+2); |
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#if defined(_WIN32) || defined(_WIN64) /* increase file limit to maximum */ |
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for (i = 8192; i > _IOB_ENTRIES; i >>= 1) |
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if (_setmaxstdio(i) == i) |
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break; |
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#endif |
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initfunc(); /* initialize calcomp routines */ |
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calcontext(RCCONTEXT); |
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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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override_options(); |
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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 'n': /* number of cores */ |
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check(2,"i"); |
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nproc = atoi(argv[++i]); |
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if (nproc <= 0) |
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error(USER, "bad number of processes"); |
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break; |
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case 'V': /* output contributions */ |
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check_bool(2,contrib); |
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break; |
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case 'x': /* x resolution */ |
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check(2,"i"); |
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xres = 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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yres = 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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check_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 'l': /* limit distance */ |
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if (argv[i][2] != 'd') |
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goto badopt; |
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check_bool(3,lim_dist); |
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break; |
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case 'I': /* immed. irradiance */ |
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check_bool(2,imm_irrad); |
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break; |
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case 'f': /* force or format */ |
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if (argv[i][2] == 'o') { |
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check_bool(3,force_open); |
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break; |
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} |
| 277 |
setformat(argv[i]+2); |
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break; |
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case 'o': /* output */ |
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check(2,"s"); |
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curout = argv[++i]; |
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break; |
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case 'r': /* recover output */ |
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check_bool(2,recover); |
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break; |
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case 'h': /* header output */ |
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check_bool(2,header); |
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break; |
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case 'p': /* parameter setting(s) */ |
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check(2,"s"); |
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set_eparams(prms = argv[++i]); |
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break; |
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case 'c': /* sample count */ |
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check(2,"i"); |
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accumulate = atoi(argv[++i]); |
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break; |
| 297 |
case 'b': /* bin expression/count */ |
| 298 |
if (argv[i][2] == 'n') { |
| 299 |
check(3,"s"); |
| 300 |
bincnt = (int)(eval(argv[++i]) + .5); |
| 301 |
break; |
| 302 |
} |
| 303 |
check(2,"s"); |
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binval = argv[++i]; |
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break; |
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case 'm': /* modifier name */ |
| 307 |
check(2,"s"); |
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addmodifier(argv[++i], curout, prms, binval, bincnt); |
| 309 |
break; |
| 310 |
case 'M': /* modifier file */ |
| 311 |
check(2,"s"); |
| 312 |
addmodfile(argv[++i], curout, prms, binval, bincnt); |
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break; |
| 314 |
case 't': /* reporting interval */ |
| 315 |
check(2,"i"); |
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report_intvl = atoi(argv[++i]); |
| 317 |
break; |
| 318 |
default: |
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goto badopt; |
| 320 |
} |
| 321 |
} |
| 322 |
if (nmods <= 0) |
| 323 |
error(USER, "missing required modifier argument"); |
| 324 |
/* override some option settings */ |
| 325 |
override_options(); |
| 326 |
/* set/check spectral sampling */ |
| 327 |
if (setspectrsamp(CNDX, WLPART) < 0) |
| 328 |
error(USER, "unsupported spectral sampling"); |
| 329 |
/* initialize object types */ |
| 330 |
initotypes(); |
| 331 |
/* initialize urand */ |
| 332 |
if (rand_samp) { |
| 333 |
srandom((long)time(0)); |
| 334 |
initurand(0); |
| 335 |
} else { |
| 336 |
srandom(0L); |
| 337 |
initurand(2048); |
| 338 |
} |
| 339 |
/* set up signal handling */ |
| 340 |
sigdie(SIGINT, "Interrupt"); |
| 341 |
#ifdef SIGHUP |
| 342 |
sigdie(SIGHUP, "Hangup"); |
| 343 |
#endif |
| 344 |
sigdie(SIGTERM, "Terminate"); |
| 345 |
#ifdef SIGPIPE |
| 346 |
sigdie(SIGPIPE, "Broken pipe"); |
| 347 |
#endif |
| 348 |
#ifdef SIGALRM |
| 349 |
sigdie(SIGALRM, "Alarm clock"); |
| 350 |
#endif |
| 351 |
#ifdef SIGXCPU |
| 352 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
| 353 |
sigdie(SIGXFSZ, "File size exceeded"); |
| 354 |
#endif |
| 355 |
#ifdef NICE |
| 356 |
nice(NICE); /* lower priority */ |
| 357 |
#endif |
| 358 |
/* get octree */ |
| 359 |
if (i == argc) |
| 360 |
octname = NULL; |
| 361 |
else if (i == argc-1) |
| 362 |
octname = argv[i]; |
| 363 |
else |
| 364 |
goto badopt; |
| 365 |
if (octname == NULL) |
| 366 |
error(USER, "missing octree argument"); |
| 367 |
|
| 368 |
readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL); |
| 369 |
nsceneobjs = nobjects; |
| 370 |
|
| 371 |
/* PMAP: set up & load photon maps */ |
| 372 |
ray_init_pmap(); |
| 373 |
|
| 374 |
marksources(); /* find and mark sources */ |
| 375 |
|
| 376 |
/* PMAP: init photon map for light source contributions */ |
| 377 |
initPmapContrib(&modconttab, nmods); |
| 378 |
|
| 379 |
setambient(); /* initialize ambient calculation */ |
| 380 |
|
| 381 |
rcontrib(); /* trace ray contributions (loop) */ |
| 382 |
|
| 383 |
/* PMAP: free photon maps */ |
| 384 |
ray_done_pmap(); |
| 385 |
|
| 386 |
quit(0); /* exit clean */ |
| 387 |
|
| 388 |
badopt: |
| 389 |
fprintf(stderr, |
| 390 |
"Usage: %s [-n nprocs][-V][-c count][-r][-e expr][-f source][-o ospec][-p p1=V1,p2=V2][-b binv][-bn N] {-m mod | -M file} [rtrace options] octree\n", |
| 391 |
progname); |
| 392 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
| 393 |
error(USER, errmsg); |
| 394 |
return(1); /* pro forma return */ |
| 395 |
|
| 396 |
#undef check |
| 397 |
#undef check_bool |
| 398 |
} |
| 399 |
|
| 400 |
|
| 401 |
void |
| 402 |
wputs( /* warning output function */ |
| 403 |
const char *s |
| 404 |
) |
| 405 |
{ |
| 406 |
int lasterrno = errno; |
| 407 |
if (erract[WARNING].pf == NULL) |
| 408 |
return; /* called by calcomp or someone */ |
| 409 |
eputs(s); |
| 410 |
errno = lasterrno; |
| 411 |
} |
| 412 |
|
| 413 |
|
| 414 |
void |
| 415 |
eputs( /* put string to stderr */ |
| 416 |
const char *s |
| 417 |
) |
| 418 |
{ |
| 419 |
static int midline = 0; |
| 420 |
|
| 421 |
if (!*s) |
| 422 |
return; |
| 423 |
if (!midline++) { |
| 424 |
fputs(progname, stderr); |
| 425 |
fputs(": ", stderr); |
| 426 |
} |
| 427 |
fputs(s, stderr); |
| 428 |
if (s[strlen(s)-1] == '\n') { |
| 429 |
fflush(stderr); |
| 430 |
midline = 0; |
| 431 |
} |
| 432 |
} |
