How to set color filter through script

[ohnocall911]

Hey guys, I’ve had some issues getting a day/night cycle going on.

I have a main time script below that checks the hours and is supposed to apply a color filter to the PostProcessingVolume. Found a couple similar threads for adjusting values through floats in the forums but none related to setting the color.

Here’s what I have. Tried a couple different variations with no success:

public class TimeSystem : MonoBehaviour
{
    public Volume volume;
    private ColorAdjustments colorAdjustments;

/*
Commented out since this didn't work either

    Color earlyMorningColor = new Color(253, 127, 127);
    Color morningColor = new Color(255, 255, 255);
    Color afternoonColor = new Color(236, 236, 236);
    Color eveningColor = new Color(176, 197, 197);
    Color midnightColor = new Color(121, 125, 166);

    public Gradient dayLight;

    public Color earlyMorningShade;
    public Color morningShade;
    public Color afternoonShade;
    public Color eveningShade;
    public Color midnightShade;
    */

...

void Start()
    {
        volume = GetComponent<Volume>();
        volume.profile.TryGet(out ColorAdjustments colorAdjustments);
    }


void CalculateTimePeriods()
    {
       

        if (hour == 3 || hour == 4 || hour == 5 || hour == 6)
        {

            //volume.profile.TryGetSettings(out colorEarlyMorning);
            //colorEarlyMorning.colorFilter.value = earlyMorningColor;
            colorAdjustments.colorFilter.value = Color.HSVToRGB(253, 127, 127);
        }
}

[TheBossaaaa]

No one has answer to this?

[oliverschnabel]

In the Color class in Unity, each color component is a floating point value with a range from 0 to 1. If you use the values provided above, you get way too high intensity on the HDR Color of the ColorFilter.

So you need to devide the numbers by 255 to get them into the correct range. E.g. the following script assigns the correct earlyMorningColor when you press T in Play Mode.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;

public class ColorFilterAdjustment : MonoBehaviour
{

    public Volume volume;
    private ColorAdjustments colorAdjustments;

    private Color earlyMorningColor = new Color(253.0f / 255.0f, 127.0f / 255.0f, 127.0f / 255.0f);

    void Update()
    {
        if(volume == null)
            return;

        if(Input.GetKeyUp(KeyCode.T)) {
            volume.profile.TryGet(out ColorAdjustments colorAdjustments);

            if(colorAdjustments != null) {
                colorAdjustments.colorFilter.value = earlyMorningColor;
            }
        }
    }
}

I just tested it in the new URP Sample and this is the result that I got in the Terminal Scene:

The Volume that is assigned needs to have the ColorFilter already activated in this example: