func IsTransformFeedback(id uint32) bool {
	ret, _, _ := syscall.Syscall(gpIsTransformFeedback, 1, uintptr(id), 0, 0)
	return ret != 0
}
func IsTransformFeedback(id uint32) bool {
	ret, _, _ := syscall.Syscall(gpIsTransformFeedback, 1, uintptr(id), 0, 0)
	return ret != 0
}
// determine if a name corresponds to a transform feedback object