--- ray/src/rt/rpmain.c	2024/04/08 17:08:15	2.33
+++ ray/src/rt/rpmain.c	2024/10/30 16:47:03	2.35
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rpmain.c,v 2.33 2024/04/08 17:08:15 greg Exp $";
+static const char	RCSid[] = "$Id: rpmain.c,v 2.35 2024/10/30 16:47:03 greg Exp $";
 #endif
 /*
  *  rpmain.c - main for rpict batch rendering program
@@ -30,7 +30,6 @@ static const char	RCSid[] = "$Id: rpmain.c,v 2.33 2024
 char  *progname;			/* argv[0] */
 char  *octname;				/* octree name */
 char  *sigerr[NSIG];			/* signal error messages */
-char  *shm_boundary = NULL;		/* boundary of shared memory */
 char  *errfile = NULL;			/* error output file */
 
 extern time_t  time();
@@ -367,9 +366,7 @@ main(int  argc, char  *argv[])
 			close(duped1);
 		}
 		if (persist == PARALLEL) {	/* multiprocessing */
-			preload_objs();		/* preload scene */
-			shm_boundary = (char *)malloc(16);
-			strcpy(shm_boundary, "SHM_BOUNDARY");
+			cow_memshare();		/* preloads scene */
 			while ((rval=fork()) == 0) {	/* keep on forkin' */
 				pflock(1);
 				pfhold();
@@ -435,6 +432,8 @@ wputs(				/* warning output function */
 )
 {
 	int  lasterrno = errno;
+	if (erract[WARNING].pf == NULL)
+		return;		/* called by calcomp or someone */
 	eputs(s);
 	errno = lasterrno;
 }