station_obscurum_unity/Assets/Scripts/Darkness/VectorFieldHandler.cs

using System.Collections.Generic;
using UnityEngine;
using UnityEngine.VFX;

public class VectorFieldHandler : MonoBehaviour
{
    [SerializeField] private float avoidanceDist;

    [SerializeField] private List<Vector3> avoidances;

    [SerializeField] private Vector3 size;

    [SerializeField] private VisualEffect effect;

    private Texture3D vField;

    // Start is called before the first frame update
    private void Start()
    {
        vField = new Texture3D((int)size.x, (int)size.y, (int)size.z, TextureFormat.RFloat, 0);
        for (var x = 0; x < size.x; x++)
        for (var y = 0; y < size.y; y++)
        for (var z = 0; z < size.z; z++)
            vField.SetPixel(x, y, z, new Color(1, 0, 0, 0));
        //vField.SetPixel(0, 0, 0, new Color(1, 0, 0, 0));
        effect.SetTexture("VectorField", vField);
    }

    // Update is called once per frame
    private void Update()
    {
    }
}