Underwater script is not working.

Why is the following script not working (unity 2021) in my scene?

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. public class Underwater: MonoBehaviour {
4. public float waterHeight;
5. private bool isUnderwater;
6. private Color normalColor;
7. private Color underwaterColor;
8. // Use this for initialization
9. void Start () {
10. normalColor = new Color (0.5f, 0.5f, 0.5f, 0.5f);
11. underwaterColor = new Color (0.22f, 0.65f, 0.77f, 0.5f);
12. }
13. // Update is called once per frame
14. void Update () {
15. if ((transform.position.y < waterHeight) != isUnderwater) {
16. isUnderwater = transform.position.y < waterHeight;
17. if (isUnderwater) SetUnderwater ();
18. if (!isUnderwater) SetNormal ();
19. }
20. }
21. void SetNormal () {
22. RenderSettings.fogColor = normalColor;
23. RenderSettings.fogDensity = 0.01f;
24. }
25. void SetUnderwater () {
26. RenderSettings.fogColor = underwaterColor;
27. RenderSettings.fogDensity = 0.1f;
28. }
29. }

The script is taken from here.
I attach the script to the camera and if the camera is below the position y set in the variable - nothing happens.

 

Try Debug.Log-ing transform.position.y alongside waterHeight and see if those values are what you think they are.

 

I have displayed the variables in UI, the boolean is changing to true. somthing is wrong with the colors settings.

 

Maybe I have found the problem - fog doesn't work with my amd radeon graphics card.

 

Try the linear fog... I believe it works on a wider range of targets. It's what I use for mobile too.