--- ray/src/rt/source.h	2020/04/06 21:09:07	2.21
+++ ray/src/rt/source.h	2024/11/09 15:21:32	2.25
@@ -1,4 +1,4 @@
-/* RCSid $Id: source.h,v 2.21 2020/04/06 21:09:07 greg Exp $ */
+/* RCSid $Id: source.h,v 2.25 2024/11/09 15:21:32 greg Exp $ */
 /*
  *  source.h - header file for ray tracing sources.
  *
@@ -20,7 +20,7 @@ extern "C" {
 #define  SHADCACHE	20		/* shadow cache resolution */
 #endif
 #ifndef  MINSHADCNT
-#define  MINSHADCNT	4		/* test all sources if this few */
+#define  MINSHADCNT	2		/* test at least this many shadows */
 #endif
 
 #define  SDISTANT	01		/* source distant flag */
@@ -72,7 +72,7 @@ typedef struct {
 	} sa;			/* source aiming information */
 	unsigned long
 		ntests, nhits;	/* shadow tests and hits */
-#ifdef  SHADCACHE
+#if  SHADCACHE
 	OBSCACHE  *obscache;    /* obstructor cache */
 #endif
 	int  sflags;		/* source flags */
@@ -152,7 +152,7 @@ extern void	freesources(void);
 extern int	srcray(RAY *sr, RAY *r, SRCINDEX *si);
 extern void	srcvalue(RAY *r);
 extern int	sourcehit(RAY *r);
-typedef void srcdirf_t(COLOR cv, void *np, FVECT ldir, double omega);
+typedef void srcdirf_t(SCOLOR cv, void *np, FVECT ldir, double omega);
 extern void	direct(RAY *r, srcdirf_t *f, void *p);
 extern void	srcscatter(RAY *r);
 extern int	m_light(OBJREC *m, RAY *r);
@@ -163,6 +163,7 @@ extern int      srcblocked(RAY *r);
 extern void     freeobscache(SRCREC *s);
 extern void	markclip(OBJREC *m);
 					/* defined in srcsamp.c */
+extern int	srcskip(int sn, RAY *r);
 extern double	nextssamp(RAY *r, SRCINDEX *si);
 extern int	skipparts(int ct[3], int sz[3], int pp[2], unsigned char *pt);
 extern void	nopart(SRCINDEX *si, RAY *r);