func FeedbackBuffer(size int32, xtype uint32, buffer *float32) {
	syscall.Syscall(gpFeedbackBuffer, 3, uintptr(size), uintptr(xtype), uintptr(unsafe.Pointer(buffer)))
}
func FeedbackBuffer(size int32, xtype uint32, buffer *float32) {
	syscall.Syscall(gpFeedbackBuffer, 3, uintptr(size), uintptr(xtype), uintptr(unsafe.Pointer(buffer)))
}
func FeedbackBuffer ( size int32 , xtype uint32 , buffer * float32 ) { syscall . Syscall ( gpFeedbackBuffer , 3 , uintptr ( size ) , uintptr ( xtype ) , uintptr ( unsafe . Pointer ( buffer ) ) ) }
// controls feedback mode
controls feedback mode