DungeonShader.cs

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using System;
using Microsoft.Xna.Framework;
using ReLogic.Peripherals.RGB;
 
namespace Terraria.GameContent.RGB;
 
public class DungeonShader : ChromaShader
{
    private readonly Vector4 _backgroundColor = new Color(5, 5, 5).ToVector4();
 
    private readonly Vector4 _spiritTrailColor = new Color(6, 51, 222).ToVector4();
 
    private readonly Vector4 _spiritColor = Color.White.ToVector4();
 
    [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++)
        {
            Point gridPositionOfIndex = fragment.GetGridPositionOfIndex(i);
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            float num = ((NoiseHelper.GetStaticNoise(gridPositionOfIndex.Y) * 10f + time) % 10f - (canvasPositionOfIndex.X + 2f)) * 0.5f;
            Vector4 vector = _backgroundColor;
            if (num > 0f)
            {
                float num2 = Math.Max(0f, 1.2f - num);
                float amount = MathHelper.Clamp(num2 * num2 * num2, 0f, 1f);
                if (num < 0.2f)
                {
                    num2 = num / 0.2f;
                }
                Vector4 value = Vector4.Lerp(_spiritTrailColor, _spiritColor, amount);
                vector = Vector4.Lerp(vector, value, num2);
            }
            fragment.SetColor(i, vector);
        }
    }
}