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#include "otypes.h" |
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#include "platform.h" |
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char *shm_boundary = NULL; /* boundary of shared memory */ |
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CUBE thescene; /* our scene */ |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
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int do_irrad = 0; /* compute irradiance? */ |
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int rand_samp = 0; /* pure Monte Carlo sampling? */ |
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int rand_samp = 1; /* pure Monte Carlo sampling? */ |
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .03; /* shadow threshold */ |
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int backvis = 1; /* back face visibility */ |
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int maxdepth = 8; /* maximum recursion depth */ |
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double minweight = 5e-4; /* minimum ray weight */ |
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int maxdepth = -10; /* maximum recursion depth */ |
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double minweight = 2e-3; /* minimum ray weight */ |
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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RNUMBER raysleft; /* number of rays left to trace */ |
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long waitflush; /* how long until next flush */ |
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int lastray = 0; /* last ray number sent */ |
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int lastdone = 0; /* last ray output */ |
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RNUMBER lastray = 0; /* last ray number sent */ |
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RNUMBER lastdone = 0; /* last ray output */ |
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/* Close output stream and free record */ |
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static void |
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closestream(void *p) |
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{ |
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STREAMOUT *sop = (STREAMOUT *)p; |
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int status = 0; |
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if (sop->outpipe) |
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status = pclose(sop->ofp); |
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else if (sop->ofp != stdout) |
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status = fclose(sop->ofp); |
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if (status) |
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error(SYSTEM, "error closing output stream"); |
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free(p); |
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} |
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|
| 82 |
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LUTAB ofiletab = LU_SINIT(free,closestream); /* output file table */ |
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|
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#define OF_MODIFIER 01 |
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#define OF_BIN 02 |
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|
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static void mcfree(void *p) { epfree((*(MODCONT *)p).binv); free(p); } |
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LUTAB modconttab = LU_SINIT(NULL,mcfree); /* modifier lookup table */ |
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if (nproc > MAXPROCESS) |
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sprintf(errmsg, "too many processes requested -- reducing to %d", |
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nproc = MAXPROCESS); |
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if (nproc > 1) { |
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preload_objs(); /* preload auxiliary data */ |
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/* set shared memory boundary */ |
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shm_boundary = strcpy((char *)malloc(16), "SHM_BOUNDARY"); |
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} |
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if ((nproc > 1) & (accumulate <= 0)) |
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zero_record(0); /* prime our queue to accumulate */ |
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put_zero_record(0); /* prime our queue to accumulate */ |
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if (recover) { /* recover previous output? */ |
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if (accumulate <= 0) { |
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reload_output(); |
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if ((nproc > 1) & (accumulate <= 0)) |
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queue_modifiers(); |
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} else |
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recover_output(); |
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} |
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if (yres > 0) { /* set up flushing & ray counts */ |
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if (xres > 0) |
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raysleft = (RNUMBER)xres*yres; |
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for (i = 0; i < nsources; i++) |
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source[i].sflags |= SFOLLOW; |
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if (nproc == 1 || in_rchild()) /* single process or child */ |
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> |
if (nproc > 1 && in_rchild()) /* forked child? */ |
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return; /* return to main processing loop */ |
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| 232 |
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if (recover) { /* recover previous output? */ |
| 233 |
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if (accumulate <= 0) { |
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reload_output(); |
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if (nproc > 1) |
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queue_modifiers(); |
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} else |
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recover_output(); |
| 239 |
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} |
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if (nproc == 1) /* single process? */ |
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return; |
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|
| 243 |
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parental_loop(); /* else run controller */ |
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quit(0); /* parent musn't return! */ |
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} |
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static int ignore_warning_given = 0; |
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FVECT orig, direc; |
| 347 |
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double d; |
| 348 |
< |
/* initialize & fork */ |
| 348 |
> |
/* initialize (& fork more of us) */ |
| 349 |
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rcinit(); |
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/* load rays from stdin & process */ |
| 351 |
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#ifdef getc_unlocked |
| 352 |
< |
flockfile(stdin); /* avoid lock/unlock overhead */ |
| 352 |
> |
flockfile(stdin); /* avoid mutex overhead */ |
| 353 |
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#endif |
| 354 |
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while (getvec(orig) == 0 && getvec(direc) == 0) { |
| 355 |
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d = normalize(direc); |
| 356 |
< |
if ((d == 0.0) & (accumulate != 1)) { |
| 356 |
> |
if (nchild != -1 && (d == 0.0) & (accumulate != 1)) { |
| 357 |
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if (!ignore_warning_given++) |
| 358 |
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error(WARNING, |
| 359 |
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"dummy ray(s) ignored during accumulation\n"); |
| 365 |
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if (d == 0.0) { /* zero ==> flush */ |
| 366 |
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if ((yres <= 0) | (xres <= 0)) |
| 367 |
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waitflush = 1; /* flush right after */ |
| 368 |
+ |
account = 1; |
| 369 |
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} else { /* else compute */ |
| 370 |
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eval_ray(orig, direc, lim_dist ? d : 0.0); |
| 371 |
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} |
| 374 |
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if (raysleft && !--raysleft) |
| 375 |
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break; /* preemptive EOI */ |
| 376 |
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} |
| 377 |
< |
if (accumulate <= 0 || account < accumulate) { |
| 377 |
> |
if (nchild != -1 && (accumulate <= 0) | (account < accumulate)) { |
| 378 |
|
if (account < accumulate) { |
| 379 |
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error(WARNING, "partial accumulation in final record"); |
| 380 |
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accumulate -= account; |
