--- ray/src/rt/source.h	2008/12/06 01:08:53	2.18
+++ ray/src/rt/source.h	2020/04/06 21:09:07	2.21
@@ -1,4 +1,4 @@
-/* RCSid $Id: source.h,v 2.18 2008/12/06 01:08:53 greg Exp $ */
+/* RCSid $Id: source.h,v 2.21 2020/04/06 21:09:07 greg Exp $ */
 /*
  *  source.h - header file for ray tracing sources.
  *
@@ -19,6 +19,9 @@ extern "C" {
 #ifndef  SHADCACHE
 #define  SHADCACHE	20		/* shadow cache resolution */
 #endif
+#ifndef  MINSHADCNT
+#define  MINSHADCNT	4		/* test all sources if this few */
+#endif
 
 #define  SDISTANT	01		/* source distant flag */
 #define  SSKIP		02		/* source skip flag */
@@ -143,8 +146,8 @@ extern int  nsources;			/* the number of sources */
 #define  setsource(s,o)		(*sfun[(o)->otype].of->setsrc)(s,o)
 
 					/* defined in source.c */
-extern OBJREC   *findmaterial(OBJREC *o);
 extern void	marksources(void);
+extern void	distantsources(void);
 extern void	freesources(void);
 extern int	srcray(RAY *sr, RAY *r, SRCINDEX *si);
 extern void	srcvalue(RAY *r);