using UnityEngine;
using UnityEditor;

[ExecuteAlways]
public class MainCameraPositionShaderSetter : MonoBehaviour {
    private static readonly int pId_MainCameraPosition = Shader.PropertyToID("_MainCameraPosition");

    private void OnEnable() {
        if (!Camera.main || Camera.main.gameObject != this.gameObject) {
            Debug.LogWarning("MainCameraPositionShaderSetter set on object that is not the main camera");
        }
    }

    private void Update() {
        Shader.SetGlobalVector(pId_MainCameraPosition, this.transform.position);
    }
}