--- ray/src/rt/srcsupp.c	1991/07/18 14:43:07	1.10
+++ ray/src/rt/srcsupp.c	1991/09/13 13:44:10	1.13
@@ -49,17 +49,19 @@ initstypes()			/* initialize source dispatch table */
 int
 newsource()			/* allocate new source in our array */
 {
+#define SRCINC	4
 	if (nsources == 0)
-		source = (SRCREC *)malloc(sizeof(SRCREC));
-	else
+		source = (SRCREC *)malloc(SRCINC*sizeof(SRCREC));
+	else if (nsources%SRCINC == 0)
 		source = (SRCREC *)realloc((char *)source,
-				(unsigned)(nsources+1)*sizeof(SRCREC));
+				(unsigned)(nsources+SRCINC)*sizeof(SRCREC));
 	if (source == NULL)
 		return(-1);
 	source[nsources].sflags = 0;
 	source[nsources].nhits = 1;
 	source[nsources].ntests = 2;	/* initial hit probability = 1/2 */
 	return(nsources++);
+#undef SRCINC
 }
 
 
@@ -392,7 +394,7 @@ register RAY  *r;
 		first = 0; last = nsources-1;
 	}
 	for (i = first; i <= last; i++)
-		if (source[i].sflags & SDISTANT)
+		if ((source[i].sflags & (SDISTANT|SVIRTUAL)) == SDISTANT)
 			/*
 			 * Check to see if ray is within
 			 * solid angle of source.
@@ -415,9 +417,10 @@ register RAY  *r;
 }
 
 
-#define  wrongsource(m, r)	(m->otype!=MAT_ILLUM && \
-				r->rsrc>=0 && \
-				source[r->rsrc].so!=r->ro)
+#define  wrongsource(m, r)	(r->rsrc>=0 && \
+				source[r->rsrc].so!=r->ro && \
+				(m->otype!=MAT_ILLUM || \
+			objptr(source[r->rsrc].so->omod)->otype==MAT_ILLUM))
 
 #define  distglow(m, r)		(m->otype==MAT_GLOW && \
 				r->rot > m->oargs.farg[3])