Cannot change light parameter in start()

Hello !

So this is is the weirdest thing : Using Unity 2020.3 LTS (HDRP), I can't set a light intensity in the start function this way :

Code (CSharp):

1. void Start()
2.     {
3.         GetComponent<Light>().intensity = 0;
4.     }
5.  
6.  

It simply gets overwritten back to its original value immediately.

The workaround I found is using start as a coroutine and doing this :

Code (CSharp):

1.     IEnumerator Start()
2.     {
3.         yield return new WaitForEndOfFrame();
4.         GetComponent<Light>().intensity = 0;
5.     }

But this seems super weird, is it normal behaviour, or is it a bug ?

Thanks !

 

I'm having the same problem (2021.3.0ft HDRP). I wanted to set light intensity in Awake/Start, but it reverts back to the original scene values after a couple of frames...

 

One thing to try is to Destroy() the light right after you set its intensity.

This will soon reveal what piece of code might be setting it back because then that code will throw an "object has been destroyed!" error.

Another thing to look at is animations... if you are animating ANYTHING in the hierarchy where your light is, make sure the

Write Defaults

field is unticked in the Animator State(s).

 

Oh thank you, I really appreciate the ideas and insight!!!