--- ray/src/rt/rcontrib.c 2012/06/10 05:25:42 2.2 +++ ray/src/rt/rcontrib.c 2020/07/20 15:54:29 2.36 @@ -1,15 +1,16 @@ #ifndef lint -static const char RCSid[] = "$Id: rcontrib.c,v 2.2 2012/06/10 05:25:42 greg Exp $"; +static const char RCSid[] = "$Id: rcontrib.c,v 2.36 2020/07/20 15:54:29 greg Exp $"; #endif /* * Accumulate ray contributions for a set of materials * Initialization and calculation routines */ +#include "copyright.h" + #include "rcontrib.h" -#include "source.h" #include "otypes.h" -#include "platform.h" +#include "source.h" char *shm_boundary = NULL; /* boundary of shared memory */ @@ -20,15 +21,14 @@ int dimlist[MAXDIM]; /* sampling dimensions */ int ndims = 0; /* number of sampling dimensions */ int samplendx = 0; /* index for this sample */ -static void trace_contrib(RAY *r); /* our trace callback */ -void (*trace)() = trace_contrib; +void (*trace)() = NULL; /* trace call (NULL before rcinit) */ int do_irrad = 0; /* compute irradiance? */ -int rand_samp = 0; /* pure Monte Carlo sampling? */ +int rand_samp = 1; /* pure Monte Carlo sampling? */ -double dstrsrc = 0.0; /* square source distribution */ -double shadthresh = .03; /* shadow threshold */ +double dstrsrc = 0.9; /* square source distribution */ +double shadthresh = 0.; /* shadow threshold */ double shadcert = .75; /* shadow certainty */ int directrelay = 3; /* number of source relays */ int vspretest = 512; /* virtual source pretest density */ @@ -40,18 +40,18 @@ COLOR salbedo = BLKCOLOR; /* global scattering albedo double seccg = 0.; /* global scattering eccentricity */ double ssampdist = 0.; /* scatter sampling distance */ -double specthresh = .15; /* specular sampling threshold */ +double specthresh = .02; /* specular sampling threshold */ double specjitter = 1.; /* specular sampling jitter */ int backvis = 1; /* back face visibility */ -int maxdepth = 8; /* maximum recursion depth */ -double minweight = 5e-4; /* minimum ray weight */ +int maxdepth = -10; /* maximum recursion depth */ +double minweight = 2e-3; /* minimum ray weight */ char *ambfile = NULL; /* ambient file name */ COLOR ambval = BLKCOLOR; /* ambient value */ int ambvwt = 0; /* initial weight for ambient value */ -double ambacc = 0; /* ambient accuracy */ +double ambacc = 0.; /* ambient accuracy */ int ambres = 256; /* ambient resolution */ int ambdiv = 350; /* ambient divisions */ int ambssamp = 0; /* ambient super-samples */ @@ -63,66 +63,17 @@ int account; /* current accumulation count */ RNUMBER raysleft; /* number of rays left to trace */ long waitflush; /* how long until next flush */ -int lastray = 0; /* last ray number sent */ -int lastdone = 0; /* last ray output */ +RNUMBER lastray = 0; /* last ray number sent */ +RNUMBER lastdone = 0; /* last ray output */ -/* Close output stream and free record */ -static void -closestream(void *p) -{ - STREAMOUT *sop = (STREAMOUT *)p; - int status = 0; - if (sop->outpipe) - status = pclose(sop->ofp); - else if (sop->ofp != stdout) - status = fclose(sop->ofp); - if (status) - error(SYSTEM, "error closing output stream"); - free(p); -} +static void trace_contrib(RAY *r); /* our trace callback */ -LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */ - -#define OF_MODIFIER 01 -#define OF_BIN 02 - static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); } LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */ -static OBJECT traset[MAXTSET+1]={0}; /* trace include set */ - /************************** INITIALIZATION ROUTINES ***********************/ -void -tranotify( /* record new modifier */ - OBJECT obj -) -{ - static int hitlimit = 0; - OBJREC *o = objptr(obj); - int i; - - if (obj == OVOID) { /* starting over */ - traset[0] = 0; - hitlimit = 0; - return; - } - if (hitlimit || !ismodifier(o->otype)) - return; - for (i = nmods; i-- > 0; ) - if (!strcmp(o->oname, modname[i])) { - if (traset[0] >= MAXTSET) { - error(WARNING, "too many same-named modifiers"); - hitlimit++; - return; /* should this be fatal? */ - } - insertelem(traset, obj); - break; - } -} - - char * formstr( /* return format identifier */ int f @@ -140,7 +91,7 @@ formstr( /* return format identifier */ /* Add modifier to our list to track */ MODCONT * -addmodifier(char *modn, char *outf, char *binv, int bincnt) +addmodifier(char *modn, char *outf, char *prms, char *binv, int bincnt) { LUENT *lep = lu_find(&modconttab,modn); MODCONT *mp; @@ -151,8 +102,14 @@ addmodifier(char *modn, char *outf, char *binv, int bi sprintf(errmsg, "duplicate modifier '%s'", modn); error(USER, errmsg); } - if (nmods >= MAXMODLIST) - error(INTERNAL, "too many modifiers"); + if (nmods >= MAXMODLIST) { + sprintf(errmsg, "too many modifiers (%d limit)", MAXMODLIST); + error(INTERNAL, errmsg); + } + if (!strcmp(modn, VOIDID)) { + sprintf(errmsg, "cannot track '%s' modifier", VOIDID); + error(USER, errmsg); + } modname[nmods++] = modn; /* XXX assumes static string */ lep->key = modn; /* XXX assumes static string */ if (binv == NULL) @@ -177,30 +134,41 @@ addmodifier(char *modn, char *outf, char *binv, int bi error(SYSTEM, "out of memory in addmodifier"); mp->outspec = outf; /* XXX assumes static string */ mp->modname = modn; /* XXX assumes static string */ + mp->params = prms; /* XXX assumes static string */ mp->binv = ebinv; + mp->bin0 = 0; mp->nbins = bincnt; memset(mp->cbin, 0, sizeof(DCOLOR)*bincnt); - /* allocate output streams */ - for (i = bincnt; i-- > 0; ) - getostream(mp->outspec, mp->modname, i, 1); + /* figure out starting bin */ + while (!getostream(mp->outspec, mp->modname, mp->bin0, 1)) + mp->bin0++; + /* allocate other output streams */ + for (i = 0; ++i < mp->nbins; ) + getostream(mp->outspec, mp->modname, mp->bin0+i, 1); lep->data = (char *)mp; return(mp); } -/* add modifiers from a file list */ +/* Add modifiers from a file list */ void -addmodfile(char *fname, char *outf, char *binv, int bincnt) +addmodfile(char *fname, char *outf, char *prms, char *binv, int bincnt) { char *mname[MAXMODLIST]; int i; /* find the file & store strings */ - if (wordfile(mname, getpath(fname, getrlibpath(), R_OK)) < 0) { + i = wordfile(mname, MAXMODLIST, getpath(fname, getrlibpath(), R_OK)); + if (i < 0) { sprintf(errmsg, "cannot find modifier file '%s'", fname); error(SYSTEM, errmsg); } + if (i >= MAXMODLIST-1) { + sprintf(errmsg, "too many modifiers (%d limit) in file '%s'", + MAXMODLIST-1, fname); + error(INTERNAL, errmsg); + } for (i = 0; mname[i]; i++) /* add each one */ - addmodifier(mname[i], outf, binv, bincnt); + addmodifier(mname[i], outf, prms, binv, bincnt); } @@ -210,14 +178,16 @@ quit( /* quit program */ ) { if (nchild > 0) /* close children if any */ - end_children(); + end_children(code != 0); + else if (nchild < 0) + _exit(code); /* avoid flush() in child */ exit(code); } /* Initialize our process(es) */ static void -rcinit() +rcinit(void) { int i; @@ -229,17 +199,9 @@ rcinit() /* set shared memory boundary */ shm_boundary = strcpy((char *)malloc(16), "SHM_BOUNDARY"); } - if ((nproc > 1) & (accumulate <= 0)) - put_zero_record(0); /* prime our queue to accumulate */ - - if (recover) { /* recover previous output? */ - if (accumulate <= 0) { - reload_output(); - if (nproc > 1) - queue_modifiers(); - } else - recover_output(); - } + trace = trace_contrib; /* set up trace call-back */ + for (i = 0; i < nsources; i++) /* tracing to sources as well */ + source[i].sflags |= SFOLLOW; if (yres > 0) { /* set up flushing & ray counts */ if (xres > 0) raysleft = (RNUMBER)xres*yres; @@ -250,14 +212,23 @@ rcinit() if ((account = accumulate) > 1) raysleft *= accumulate; waitflush = (yres > 0) & (xres > 1) ? 0 : xres; - /* tracing to sources as well */ - for (i = 0; i < nsources; i++) - source[i].sflags |= SFOLLOW; - if (nproc == 1 || in_rchild()) /* single process or child */ + if (nproc > 1 && in_rchild()) /* forked child? */ return; /* return to main processing loop */ - parental_loop(); /* else run controller */ + if (recover) { /* recover previous output? */ + if (accumulate <= 0) + reload_output(); + else + recover_output(); + } + if (nproc == 1) /* single process? */ + return; + /* else run appropriate controller */ + if (accumulate <= 0) + feeder_loop(); + else + parental_loop(); quit(0); /* parent musn't return! */ } @@ -268,67 +239,69 @@ static void trace_contrib(RAY *r) { MODCONT *mp; + double bval; int bn; RREAL contr[3]; - if (r->ro == NULL || !inset(traset, r->ro->omod)) + if (r->ro == NULL || r->ro->omod == OVOID) return; + /* shadow ray not on source? */ + if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) + return; mp = (MODCONT *)lu_find(&modconttab,objptr(r->ro->omod)->oname)->data; - if (mp == NULL) - error(CONSISTENCY, "unexpected modifier in trace_contrib()"); + if (mp == NULL) /* not in our list? */ + return; - worldfunc(RCCONTEXT, r); /* get bin number */ - bn = (int)(evalue(mp->binv) + .5); - if ((bn < 0) | (bn >= mp->nbins)) { - error(WARNING, "bad bin number (ignored)"); + worldfunc(RCCONTEXT, r); /* else set context */ + set_eparams((char *)mp->params); + if ((bval = evalue(mp->binv)) <= -.5) /* and get bin number */ + return; /* silently ignore negatives */ + if ((bn = (int)(bval + .5)) >= mp->nbins) { + sprintf(errmsg, "bad bin number (%d ignored)", bn); + error(WARNING, errmsg); return; } - raycontrib(contr, r, PRIMARY); + raycontrib(contr, r, PRIMARY); /* compute coefficient */ if (contrib) - multcolor(contr, r->rcol); + multcolor(contr, r->rcol); /* -> contribution */ addcolor(mp->cbin[bn], contr); } +/* Evaluate irradiance contributions */ static void -rayirrad( /* compute irradiance rather than radiance */ - RAY *r -) +eval_irrad(FVECT org, FVECT dir) { - r->rot = 1e-5; /* pretend we hit surface */ - VSUM(r->rop, r->rorg, r->rdir, r->rot); - r->ron[0] = -r->rdir[0]; - r->ron[1] = -r->rdir[1]; - r->ron[2] = -r->rdir[2]; - r->rod = 1.0; - /* compute result */ - r->revf = raytrace; - (*ofun[Lamb.otype].funp)(&Lamb, r); - r->revf = rayirrad; + RAY thisray; + + VSUM(thisray.rorg, org, dir, 1.1e-4); + thisray.rdir[0] = -dir[0]; + thisray.rdir[1] = -dir[1]; + thisray.rdir[2] = -dir[2]; + thisray.rmax = 0.0; + rayorigin(&thisray, PRIMARY, NULL, NULL); + /* pretend we hit surface */ + thisray.rxt = thisray.rot = 1e-5; + thisray.rod = 1.0; + VCOPY(thisray.ron, dir); + VSUM(thisray.rop, org, dir, 1e-4); + samplendx++; /* compute result */ + (*ofun[Lamb.otype].funp)(&Lamb, &thisray); } -/* Evaluate ray contributions */ +/* Evaluate radiance contributions */ static void -eval_ray(FVECT org, FVECT dir, double dmax) +eval_rad(FVECT org, FVECT dir, double dmax) { RAY thisray; /* set up ray */ + VCOPY(thisray.rorg, org); + VCOPY(thisray.rdir, dir); + thisray.rmax = dmax; rayorigin(&thisray, PRIMARY, NULL, NULL); - if (imm_irrad) { - VSUM(thisray.rorg, org, dir, 1.1e-4); - thisray.rdir[0] = -dir[0]; - thisray.rdir[1] = -dir[1]; - thisray.rdir[2] = -dir[2]; - thisray.rmax = 0.0; - thisray.revf = rayirrad; - } else { - VCOPY(thisray.rorg, org); - VCOPY(thisray.rdir, dir); - thisray.rmax = dmax; - } samplendx++; /* call ray evaluation */ rayvalue(&thisray); } @@ -336,7 +309,7 @@ eval_ray(FVECT org, FVECT dir, double dmax) /* Accumulate and/or output ray contributions (child or only process) */ static void -done_contrib() +done_contrib(void) { MODCONT *mp; int i; @@ -357,7 +330,7 @@ done_contrib() /* Principal calculation loop (called by main) */ void -rcontrib() +rcontrib(void) { static int ignore_warning_given = 0; FVECT orig, direc; @@ -370,7 +343,7 @@ rcontrib() #endif while (getvec(orig) == 0 && getvec(direc) == 0) { d = normalize(direc); - if ((d == 0.0) & (accumulate != 1)) { + if (nchild != -1 && (d == 0.0) & (accumulate == 0)) { if (!ignore_warning_given++) error(WARNING, "dummy ray(s) ignored during accumulation\n"); @@ -380,17 +353,21 @@ rcontrib() lastray = lastdone = 0; ++lastray; if (d == 0.0) { /* zero ==> flush */ - if ((yres <= 0) | (xres <= 0)) - waitflush = 1; /* flush right after */ - } else { /* else compute */ - eval_ray(orig, direc, lim_dist ? d : 0.0); + if ((yres <= 0) | (xres <= 1)) + waitflush = 1; /* flush after */ + if (nchild == -1) + account = 1; + } else if (imm_irrad) { /* else compute */ + eval_irrad(orig, direc); + } else { + eval_rad(orig, direc, lim_dist ? d : 0.0); } done_contrib(); /* accumulate/output */ ++lastdone; if (raysleft && !--raysleft) break; /* preemptive EOI */ } - if (accumulate <= 0 || account < accumulate) { + if (nchild != -1 && (accumulate <= 0) | (account < accumulate)) { if (account < accumulate) { error(WARNING, "partial accumulation in final record"); accumulate -= account; @@ -398,7 +375,7 @@ rcontrib() account = 1; /* output accumulated totals */ done_contrib(); } + lu_done(&ofiletab); /* close output files */ if (raysleft) error(USER, "unexpected EOF on input"); - lu_done(&ofiletab); /* close output files */ }