According to John F. Fay:

[freeglut] / src / freeglut_callbacks.c

diff --git a/src/freeglut_callbacks.c b/src/freeglut_callbacks.c
index 7f2e23b..baaeee1 100644 (file)
--- a/src/freeglut_callbacks.c
+++ b/src/freeglut_callbacks.c
@@ -52,7 +52,6 @@ void FGAPIENTRY glutDisplayFunc( void (* callback)( void ) )
         fgError( "Fatal error in program.  NULL display callback not "
                  "permitted in GLUT 3.0+ or freeglut 2.0.1+\n" );
     SET_CALLBACK( Display );
-    fgStructure.Window->State.Redisplay = GL_TRUE;
 }
 
 /*