--- ray/src/rt/source.h	1991/10/21 12:58:14	1.14
+++ ray/src/rt/source.h	1991/11/12 17:10:17	2.1
@@ -46,7 +46,7 @@ typedef struct {
 	OBJREC  *so;		/* source destination object */
 }  SRCREC;		/* light source */
 
-#define MAXSPART	32		/* maximum partitions per source */
+#define MAXSPART	64		/* maximum partitions per source */
 
 #define SU		0		/* U vector or partition */
 #define SV		1		/* V vector or partition */
@@ -112,6 +112,8 @@ extern double  nextssamp();		/* get next source sample
 extern double  scylform();		/* cosine to axis of cylinder */
 
 #define  sflatform(sn,dir)	-DOT(source[sn].snorm, dir)
+
+extern OBJREC  *vsmaterial();		/* virtual source material */
 
 extern double  intercircle();		/* intersect two circles */
 extern double  spotdisk();		/* intersecting disk for spot */