UnderworldShader.cs

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using System;
using Microsoft.Xna.Framework;
using ReLogic.Peripherals.RGB;
 
namespace Terraria.GameContent.RGB;
 
public class UnderworldShader : ChromaShader
{
    private readonly Vector4 _backColor;
 
    private readonly Vector4 _frontColor;
 
    private readonly float _speed;
 
    public UnderworldShader(Color backColor, Color frontColor, float speed)
    {
        _backColor = backColor.ToVector4();
        _frontColor = frontColor.ToVector4();
        _speed = speed;
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessLowDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        for (int i = 0; i < fragment.Count; i++)
        {
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            Vector4 vector = Vector4.Lerp(_backColor, _frontColor, (float)Math.Sin(time * _speed + canvasPositionOfIndex.X) * 0.5f + 0.5f);
            fragment.SetColor(i, vector);
        }
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessHighDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        for (int i = 0; i < fragment.Count; i++)
        {
            float dynamicNoise = NoiseHelper.GetDynamicNoise(fragment.GetCanvasPositionOfIndex(i) * 0.5f, time * _speed / 3f);
            Vector4 vector = Vector4.Lerp(_backColor, _frontColor, dynamicNoise);
            fragment.SetColor(i, vector);
        }
    }
}