How to modify Post Processing Profiles in Script?

So basically what I want to archive is a simple Camera Shake as a PostFX, Im only using the LensDistortion center value here to move the Image a bit.
I used the HDRP Volume controls as a base, but the change to the profile is not happening at all, even when I try to set it to a constant value.
Do I miss something?

This is what I already have:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.Rendering;
5. using UnityEngine.Rendering.Universal;
6.  
7. public class CameraShake : MonoBehaviour
8. {
9.     Volume volume;
10.     LensDistortion lensDistortion;
11.  
12.     public AnimationCurve animationCurve;
13.  
14.     // Start is called before the first frame update
15.     void Start()
16.     {
17.         Volume volume = gameObject.GetComponent<Volume>();
18.         LensDistortion tmp;
19.  
20.         if(volume.profile.TryGet<LensDistortion>( out tmp ) )
21.         {
22.             lensDistortion = tmp;
23.         }
24.     }
25.  
26.     [ContextMenu("Shake")]
27.     void Shake()
28.     {
29.         if(lensDistortion != null)
30.             StartCoroutine(AutoShake());
31.     }
32.  
33.     IEnumerator AutoShake()
34.     {
35.         float progress = 0;
36.         Vector2 center;
37.  
38.         while(progress < 1)
39.         {
40.             Debug.Log(progress);
41.             progress += Time.deltaTime;
42.             float x = Mathf.Lerp(0.5f, Random.Range(-0.5f, 2), animationCurve.Evaluate(progress));
43.             float y = Mathf.Lerp(0.5f, Random.Range(-1.3f, 2), animationCurve.Evaluate(progress));
44.             center = new Vector2(x, y);
45.             lensDistortion.center = new Vector2Parameter(center, true);
46.             yield return new WaitForSeconds(0);
47.         }
48.     }
49. }

btw I use like a PingPong AnimationCurve, so that the value is going back to 0.5f again.

 

Edit: It seems like the profile values are changing, but they don't have any effect on the rendering. Somehow the PostFX Rendering is stuck when changing values with a script.

 

Use 'profile' in the 'volume'. I post example code here. You can have a try.

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Rendering;
3. using UnityEngine.Rendering.Universal;
4.  
5. public class VolumeTest : MonoBehaviour
6. {
7.  
8.     private Volume v;
9.     private Bloom b;
10.     private Vignette vg;
11.     // Start is called before the first frame update
12.     void Start()
13.     {
14.         v = GetComponent<Volume>();
15.         v.profile.TryGet(out b);
16.         v.profile.TryGet(out vg);
17.     }
18.  
19.     [ContextMenu("test")]
20.     private void Test()
21.     {
22.         b.scatter.value = 0.1f;
23.         vg.intensity.value = 0.5f;
24.     }
25.  
26. }

 

The actual Volume reference used during PP rendering is actually cached into a Stack, hence modifying the Volume Component or the profile during runtime will have no effect.
Try using "VolumeManager.instance.stack". <--- This is what the PP pass actually uses.

 

My code works fine.

 

It depends on when you retrieve a reference to the profile. Once the camera with the profile attached to is created (the render camera), the profile is created as a new instance, which is then used in the stack. The original profile on your players camera is then replaced by the one used with the stack.

This means, that if you retrieve a reference to your profile BEFORE the render camera is created. You won't get the correct reference to your object, as that one is going to end up being replaced.
If you get the reference after the render camera is created. You will get the correct reference and can adjust all the settings you like.

Now please note, I could be wrong with this. But that's what I've experienced so far.

 

Same. I have tried all that was suggested here to no avail. How are we supposed to change overrides on runtime?

 

Try this. https://forum.unity.com/threads/urp...gs-at-runtime-via-script.813093/#post-5415663

 

Code (CSharp):

1.     public PostProcessVolume volume;
2.  
3.     public PostProcessVolume volume;
4.     public float BloomIntensityValue;
5.     public Slider BloomIntensitySlider;
6.  
7.     public float BloomDiffusionValue;
8.     public Slider BloomDiffusionSlider;
9.     public void Update()
10.     {
11.         ChangeBloomIntensitySettings();
12.         BloomIntensityValue = BloomIntensitySlider.value * 20;
13.  
14.         ChangeBloomDiffusionSettings();
15.         BloomDiffusionValue = BloomDiffusionSlider.value * 10;
16.     }
17.     public void ChangeBloomIntensitySettings()
18.     {
19.         GameObject gameObject = GameObject.Find("Coloured Cubes");
20.         volume = gameObject.GetComponent<PostProcessVolume>();
21.         Bloom bloom;
22.         volume.profile.TryGetSettings(out bloom);
23.         bloom.intensity.value = BloomIntensityValue;
24.     }
25.     public void ChangeBloomDiffusionSettings()
26.     {
27.         GameObject gameObject = GameObject.Find("Coloured Cubes");
28.         volume = gameObject.GetComponent<PostProcessVolume>();
29.         Bloom bloom;
30.         volume.profile.TryGetSettings(out bloom);
31.         bloom.diffusion.value = BloomDiffusionValue;
32.     }

How to manipulate bloom intensity and bloom diffusion through scripting with a slider. Hope it helps, i don't really understand this override stuff but this works for me.

The way it works is by finding the gameobject in my scene called "Coloured Cubes" (which contains my post process volume - reference the object in the inspector), setting the PostProcessVolume called volume to the PostProVolume of that gameObject and then allows me to edit the settings for effects attatched to the volume's post profile, for example in this case, BLOOM.

 

Worked man! Thanks

 

This is what I did for URP:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5. using UnityEngine.Rendering;
6. using UnityEngine.Rendering.Universal;
7.  
8. public class BloomControl : MonoBehaviour
9. {
10.     public Slider bloomSld;
11.     public Volume volume;
12.     private Bloom thisBloom;
13.  
14.  
15.     public void BloomCtrl()
16.     {
17.         VolumeProfile proflile = volume.sharedProfile;
18.  
19.  
20.         volume.profile.TryGet(out thisBloom);
21.         thisBloom.intensity.value = bloomSld.value;
22.  
23.         if(bloomSld.value == 0)
24.             thisBloom.active = false;
25.         else
26.             thisBloom.active = true;
27.     }
28. }

Basicaly it takes the value from a slider and pass it to the bloom value, and if slider value equals to 0, it deactivate the bloom override. I hope it helps!

 

using UnityEngine;
using UnityEngine.Rendering.PostProcessing;

public class BloomEffector : MonoBehaviour
{
private PostProcessVolume volume;
private Bloom bloom;
public float value;

void Start()
{
var getVolume = GetComponent<PostProcessVolume>();
volume = getVolume;
volume.profile.TryGetSettings(out bloom);
}

private void Update()
{
var value = this.value;
bloom.threshold.value = value;
}
}

 

Unity cannot find this namespace.

While this works indeed, thanks.

 

If your code is inside an asmdef, you need to manually reference Unity.PostProcessing.Runtime there.

 

To get a VolumeProfile in URP you need to reference the Unity.RenderPipelines.Core.Runtime assembly.

 

I faced the same problem,, and searched for hours, tried many different codes, and didn't understand, why can't I see the change, if the values are changing. Than I realized that I hadn't enabled post processing on the camera:
Make sure to enable it IN EVERY SCENE. (At least in Universal Render Pipeline)

 

Code (CSharp):

1.    public PostProcessVolume volume;
2.     public PostProcessVolume volume;
3.     public float BloomIntensityValue;
4.     public Slider BloomIntensitySlider;
5.     public float BloomDiffusionValue;
6.     public Slider BloomDiffusionSlider;
7.     public void Update()
8.     {
9.         ChangeBloomIntensitySettings();
10.         BloomIntensityValue = BloomIntensitySlider.value * 20;
11.         ChangeBloomDiffusionSettings();
12.         BloomDiffusionValue = BloomDiffusionSlider.value * 10;
13.     }
14.     public void ChangeBloomIntensitySettings()
15.     {
16.         GameObject gameObject = GameObject.Find("Coloured Cubes");
17.         volume = gameObject.GetComponent<PostProcessVolume>();
18.         Bloom bloom;
19.         volume.profile.TryGetSettings(out bloom);
20.         bloom.intensity.value = BloomIntensityValue;
21.     }
22.     public void ChangeBloomDiffusionSettings()
23.     {
24.         GameObject gameObject = GameObject.Find("Coloured Cubes");
25.         volume = gameObject.GetComponent<PostProcessVolume>();
26.         Bloom bloom;
27.         volume.profile.TryGetSettings(out bloom);
28.         bloom.diffusion.value = BloomDiffusionValue;
29.     }

How to manipulate bloom intensity and bloom diffusion through scripting with a slider. Hope it helps, i don't really understand this override stuff but this works for me.

 

nooooo it can't be
(thank you so much man)

 

This is the only useful answer regarding the thread subject.