--- ray/src/rt/srcsupp.c	2003/04/23 00:52:34	2.11
+++ ray/src/rt/srcsupp.c	2005/10/16 16:04:10	2.15
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: srcsupp.c,v 2.11 2003/04/23 00:52:34 greg Exp $";
+static const char	RCSid[] = "$Id: srcsupp.c,v 2.15 2005/10/16 16:04:10 greg Exp $";
 #endif
 /*
  *  Support routines for source objects and materials
@@ -19,7 +19,7 @@ static const char	RCSid[] = "$Id: srcsupp.c,v 2.11 200
 
 #include  "face.h"
 
-#define SRCINC		4		/* realloc increment for array */
+#define SRCINC		8		/* realloc increment for array */
 
 SRCREC  *source = NULL;			/* our list of sources */
 int  nsources = 0;			/* the number of sources */
@@ -60,7 +60,10 @@ newsource()			/* allocate new source in our array */
 		return(-1);
 	source[nsources].sflags = 0;
 	source[nsources].nhits = 1;
-	source[nsources].ntests = 2;	/* initial hit probability = 1/2 */
+	source[nsources].ntests = 2;	/* initial hit probability = 50% */
+#if SHADCACHE
+	source[nsources].obscache = NULL;
+#endif
 	return(nsources++);
 }
 
@@ -106,7 +109,7 @@ OBJREC  *so;
 		src->sloc[j] /= (double)f->nv;
 	}
 	if (!inface(src->sloc, f))
-		objerror(so, USER, "cannot hit center");
+		objerror(so, USER, "cannot hit center for source");
 	src->sflags |= SFLAT;
 	VCOPY(src->snorm, f->norm);
 	src->ss2 = f->area;
@@ -192,7 +195,7 @@ OBJREC  *so;
 	co = getcone(so, 0);
 	VCOPY(src->sloc, CO_P0(co));
 	if (CO_R0(co) > 0.0)
-		objerror(so, USER, "cannot hit center");
+		objerror(so, USER, "cannot hit center for source");
 	src->sflags |= SFLAT;
 	VCOPY(src->snorm, co->ad);
 	src->srad = CO_R1(co);