// Mute turns the listener gain on/off.
func (a *openal) Mute(mute bool) {
if mute {
al.Listenerf(al.GAIN, 0.0)
} else {
al.Listenerf(al.GAIN, 1.0)
}
}
func (l *soundListener) SetGain(gain float64) { al.Listenerf(al.GAIN, float32(gain)) }
