--- ray/src/util/cmatrix.h	2019/08/14 18:20:02	2.10
+++ ray/src/util/cmatrix.h	2021/01/19 23:32:00	2.13
@@ -1,4 +1,4 @@
-/* RCSid $Id: cmatrix.h,v 2.10 2019/08/14 18:20:02 greg Exp $ */
+/* RCSid $Id: cmatrix.h,v 2.13 2021/01/19 23:32:00 greg Exp $ */
 /*
  * Color matrix routine declarations.
  *
@@ -16,8 +16,9 @@ extern "C" {
 #endif
 
 /* Data types for file loading */
-enum {DTfromHeader=0, DTascii, DTrgbe, DTxyze, DTfloat, DTdouble, DTend};
+enum {DTfromHeader=0, DTrgbe, DTxyze, DTfloat, DTascii, DTdouble, DTend};
 
+extern const char	stdin_name[];
 extern const char	*cm_fmt_id[];
 extern const int	cm_elem_size[];
 
@@ -42,7 +43,8 @@ extern CMATRIX	*cm_resize(CMATRIX *cm, int nrows);
 #define cm_free(cm)	free(cm)
 
 /* Load header to obtain/check data type and matrix dimensions */
-extern char	*cm_getheader(int *dt, int *nr, int *nc, int *swp, FILE *fp);
+extern char	*cm_getheader(int *dt, int *nr, int *nc,
+				int *swp, COLOR scale, FILE *fp);
 
 /* Allocate and load a matrix from the given input (or stdin if NULL) */
 extern CMATRIX	*cm_load(const char *inspec, int nrows, int ncols, int dtype);
@@ -57,7 +59,10 @@ extern CMATRIX	*cm_multiply(const CMATRIX *cm1, const 
 extern int	cm_write(const CMATRIX *cm, int dtype, FILE *fp);
 
 /* Load and convert a matrix BTDF from the given XML file */
-extern CMATRIX	*cm_loadBTDF(char *fname);
+extern CMATRIX	*cm_loadBTDF(const char *fname);
+
+/* Load and convert a matrix BRDF from the given XML file */
+extern CMATRIX	*cm_loadBRDF(const char *fname, int backside);
 
 #ifdef __cplusplus
 }