#ifndef __FG_MAIN_HXX
#define __FG_MAIN_HXX 1
-class SGSky;
+#include <simgear/screen/extensions.hxx>
+class SGSky;
extern SGSky *thesky;
+extern glPointParameterfProc glPointParameterfPtr;
+extern glPointParameterfvProc glPointParameterfvPtr;
+extern bool glPointParameterIsSupported;
+
void fgLoadDCS (void);
void fgUpdateDCS (void);
void fgBuildRenderStates( void );
void fgUpdateTimeDepCalcs();
void fgInitTimeDepCalcs( void );
void fgReshape( int width, int height );
-void fgLoadDCS(void);
-void fgUpdateDCS (void);
bool fgMainInit( int argc, char **argv );