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[Solved]Can't update color in GradientSky on post process volume by script

Discussion in 'High Definition Render Pipeline' started by wenzy, Oct 19, 2020.

  1. wenzy

    wenzy

    Joined:
    Nov 17, 2015
    Posts:
    34
    Hello community,

    In HDRP's Volume component, I want to lerp the color in gradient sky by script.

    I have set the UpdateMode to "realtime" and the Update Period to "0",

    and here is my script:


    Code (CSharp):
    1.   public GradientSky daySky;
    2.     public Volume vol;
    3.  
    4.     void Start(){
    5.         vol.profile.TryGet(out daySky);
    6.     }
    7.  
    8.     void Update(){
    9.    
    10.          daySky.top.value = Color.Lerp(Color.white, Color.black, (Mathf.Sin(Time.time * 0.4f) + 1f) / 2f);
    11.  
    12.      }
    I can see the "top color" is update in the inspector, but in the game scene nothing happen

    (PS: Update. The issue has solved when I update the HDRP version to 7.51)
     
    Last edited: Oct 21, 2020
  2. Olmi

    Olmi

    Joined:
    Nov 29, 2012
    Posts:
    1,404
    Hi,

    This is from my snippets I've written when I was testing HDRP, should work:
    (Attach it to an object with your Gradient Sky, it should then change the colors of the Gradient Sky when your enter the play mode.)

    Code (CSharp):
    1. using UnityEngine;
    2. using UnityEngine.Rendering;
    3. using UnityEngine.Rendering.HighDefinition;
    4.  
    5. public class AccessVolumeOverrideSky : MonoBehaviour
    6. {
    7.     VisualEnvironment visualEnvironment;
    8.     GradientSky gradientSky;
    9.  
    10.     void Awake()
    11.     {
    12.         Volume volume = gameObject.GetComponent<Volume>();
    13.         VisualEnvironment tempVis;
    14.  
    15.         if (volume.profile.TryGet<VisualEnvironment>(out tempVis)) {
    16.             visualEnvironment = tempVis;
    17.         }
    18.  
    19.         GradientSky tempGradSky;
    20.         if (volume.profile.TryGet<GradientSky>(out tempGradSky)) {
    21.             gradientSky = tempGradSky;
    22.         }
    23.  
    24.         // Set the sky type
    25.         visualEnvironment.skyType.value = (int)SkyType.Gradient;
    26.  
    27.         // Set the sky parameters
    28.         gradientSky.top.value = Color.red;
    29.         gradientSky.middle.value = Color.green;
    30.         gradientSky.bottom.value = Color.blue;
    31.         gradientSky.gradientDiffusion.value = 2.0f;
    32.     }
    33. }
    EDIT: Misread your message a bit, but it should be possible to update the gradient values in Update too, just try this, should work too:

    Code (CSharp):
    1. void Update()
    2.     {
    3.         gradientSky.middle.value = new Color(
    4.             Mathf.Sin(Time.time),
    5.             Mathf.Sin(Time.time),
    6.             Mathf.Sin(Time.time)
    7.         );
    8.     }
    My sky had Update Mode set to On Demand.
     
    Last edited: Oct 20, 2020
  3. wenzy

    wenzy

    Joined:
    Nov 17, 2015
    Posts:
    34
    Thanks for your reply ! I think it's a bug on the older hdrp version. The issue has solved when I update the HDRP version from 3.31 to 7.51)

     
    Olmi likes this.
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