func FlushMappedNamedBufferRange(buffer uint32, offset int, length int) {
	syscall.Syscall(gpFlushMappedNamedBufferRange, 3, uintptr(buffer), uintptr(offset), uintptr(length))
}
func FlushMappedNamedBufferRange(buffer uint32, offset int, length int) {
	syscall.Syscall(gpFlushMappedNamedBufferRange, 3, uintptr(buffer), uintptr(offset), uintptr(length))
}
// indicate modifications to a range of a mapped buffer