Additional info, GlutPostRedisplay fix the problem. Basically i think this is not a bug. Many tutorials uses Idle without calling glutPostRedisplay, so if there was a bug it was in older versions (many tutorials are years old) of glut/freeglut. I'm looking actually at MainLoop to get a deep idea of what is going on
Last edit: Demone 2014-01-03
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Additional info, GlutPostRedisplay fix the problem. Basically i think this is not a bug. Many tutorials uses Idle without calling glutPostRedisplay, so if there was a bug it was in older versions (many tutorials are years old) of glut/freeglut. I'm looking actually at MainLoop to get a deep idea of what is going on
Last edit: Demone 2014-01-03