--- ray/src/rt/pmapio.c	2017/08/14 21:12:10	2.10
+++ ray/src/rt/pmapio.c	2018/02/08 19:55:02	2.11
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: pmapio.c,v 2.10 2017/08/14 21:12:10 rschregle Exp $";
+static const char RCSid[] = "$Id: pmapio.c,v 2.11 2018/02/08 19:55:02 rschregle Exp $";
 #endif
 
 /* 
@@ -12,7 +12,7 @@ static const char RCSid[] = "$Id: pmapio.c,v 2.10 2017
        supported by the Swiss National Science Foundation (SNSF, #147053)
    ======================================================================
    
-   $Id: pmapio.c,v 2.10 2017/08/14 21:12:10 rschregle Exp $    
+   $Id: pmapio.c,v 2.11 2018/02/08 19:55:02 rschregle Exp $    
 */
 
 
@@ -110,7 +110,9 @@ void savePhotonMap (const PhotonMap *pmap, const char 
          PhotonPrimary *prim = pmap -> primaries + i;      
 
          putint(prim -> srcIdx, sizeof(prim -> srcIdx), file);
+#ifdef PMAP_PRIMARYDIR         
          putint(prim -> dir, sizeof(prim -> dir), file);
+#endif         
 #ifdef PMAP_PRIMARYPOS         
          for (j = 0; j < 3; j++)
             putflt(prim -> pos [j], file);
@@ -207,8 +209,9 @@ PhotonMapType loadPhotonMap (PhotonMap *pmap, const ch
          PhotonPrimary *prim = pmap -> primaries + i;
          
          prim -> srcIdx = getint(sizeof(prim -> srcIdx), file);
-         
+#ifdef PMAP_PRIMARYDIR         
          prim -> dir = getint(sizeof(prim -> dir), file);
+#endif         
 #ifdef PMAP_PRIMARYPOS            
          for (j = 0; j < 3; j++)
             prim -> pos [j] = getflt(file);