reduced compiler warnings in RGBE loader

README.TXT

@@ -8,7 +8,7 @@ Included third-party software:
 * Includes OpenGL loader code created by a modified glLoadGen by Jason McKesson.
 * Includes GLM by Christophe Riccio.
 * Includes data type definitions from libspnav header originally by John Tsiombikas (see mini_spnav.h for details).
-* Includes RGBE/Radiance image import by Bruce Walter (code provided 'as-is').
+* Includes RGBE/Radiance image import by Bruce Walter (code provided 'as-is') minimally adjusted to reduce compiler warnings.
 
 See LICENSE.TXT for licensing information.
 

src/rgbe/rgbe.cc

@@ -22,6 +22,9 @@
  feel free to modify it to suit your needs.
 
  (Place notice here if you modified the code.)
+   Ok: Made minimal changes (char* -> const char*) to reduce compiler warnings.
+       - Robert Menzel mail@renderingpipeline.com
+
  posted to http://www.graphics.cornell.edu/~bjw/
  written by Bruce Walter  (bjw@graphics.cornell.edu)  5/26/95
  based on code written by Greg Ward
@@ -44,7 +47,7 @@ enum rgbe_error_codes {
 };
 
 /* default error routine.  change this to change error handling */
-static int rgbe_error(int rgbe_error_code, char *msg)
+static int rgbe_error(int rgbe_error_code, const char *msg)
 {
   switch (rgbe_error_code) {
   case rgbe_read_error:
@@ -107,7 +110,7 @@ rgbe2float(float *red, float *green, float *blue, unsigned char rgbe[4])
 /* default minimal header. modify if you want more information in header */
 int RGBE_WriteHeader(FILE *fp, int width, int height, rgbe_header_info *info)
 {
-  char *programtype = "RGBE";
+  const char *programtype = "RGBE";
 
   if (info && (info->valid & RGBE_VALID_PROGRAMTYPE))
     programtype = info->programtype;
@@ -133,11 +136,11 @@ int RGBE_WriteHeader(FILE *fp, int width, int height, rgbe_header_info *info)
 int RGBE_ReadHeader(FILE *fp, int *width, int *height, rgbe_header_info *info)
 {
   char buf[128];
-  int found_format;
+  //int found_format;
   float tempf;
-  int i;
+  size_t i;
 
-  found_format = 0;
+  //found_format = 0;
   if (info) {
     info->valid = 0;
     info->programtype[0] = 0;