code: func ClearNamedBufferData(buffer uint32, internalformat uint32, format uint32, xtype uint32, data unsafe.Pointer) {
  	syscall.Syscall6(gpClearNamedBufferData, 5, uintptr(buffer), uintptr(internalformat), uintptr(format), uintptr(xtype), uintptr(data), 0)
  }
docs: // fill a buffer object's data store with a fixed value