func ClearColor(red float32, green float32, blue float32, alpha float32) {
	C.glowClearColor(gpClearColor, (C.GLfloat)(red), (C.GLfloat)(green), (C.GLfloat)(blue), (C.GLfloat)(alpha))
}
func ClearColor(red float32, green float32, blue float32, alpha float32) {
	C.glowClearColor(gpClearColor, (C.GLfloat)(red), (C.GLfloat)(green), (C.GLfloat)(blue), (C.GLfloat)(alpha))
}
func ClearColor ( red float32 , green float32 , blue float32 , alpha float32 ) { C . glowClearColor ( gpClearColor , ( C . GLfloat ) ( red ) , ( C . GLfloat ) ( green ) , ( C . GLfloat ) ( blue ) , ( C . GLfloat ) ( alpha ) ) }
// specify clear values for the color buffers
specify clear values for the color buffers