DesertShader.cs

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using System;
using Microsoft.Xna.Framework;
using ReLogic.Peripherals.RGB;
 
namespace Terraria.GameContent.RGB;
 
public class DesertShader : ChromaShader
{
    private readonly Vector4 _baseColor;
 
    private readonly Vector4 _sandColor;
 
    public DesertShader(Color baseColor, Color sandColor)
    {
        _baseColor = baseColor.ToVector4();
        _sandColor = sandColor.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++)
        {
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            fragment.GetGridPositionOfIndex(i);
            canvasPositionOfIndex.Y += (float)Math.Sin(canvasPositionOfIndex.X * 2f + time * 2f) * 0.2f;
            float staticNoise = NoiseHelper.GetStaticNoise(canvasPositionOfIndex * new Vector2(0.1f, 0.5f));
            Vector4 vector = Vector4.Lerp(_baseColor, _sandColor, staticNoise * staticNoise);
            fragment.SetColor(i, vector);
        }
    }
}