func UnmapBuffer(target uint32) bool {
	ret := C.glowUnmapBuffer(gpUnmapBuffer, (C.GLenum)(target))
	return ret == TRUE
}
func UnmapBuffer(target uint32) bool {
	ret := C.glowUnmapBuffer(gpUnmapBuffer, (C.GLenum)(target))
	return ret == TRUE
}
// release the mapping of a buffer object's data store into the client's address space