BrainShader.cs

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using System;
using Microsoft.Xna.Framework;
using ReLogic.Peripherals.RGB;
 
namespace Terraria.GameContent.RGB;
 
public class BrainShader : ChromaShader
{
    private readonly Vector4 _brainColor;
 
    private readonly Vector4 _veinColor;
 
    public BrainShader(Color brainColor, Color veinColor)
    {
        _brainColor = brainColor.ToVector4();
        _veinColor = veinColor.ToVector4();
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessLowDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        Vector4 vector = Vector4.Lerp(_brainColor, _veinColor, Math.Max(0f, (float)Math.Sin(time * 3f)));
        for (int i = 0; i < fragment.Count; i++)
        {
            fragment.SetColor(i, vector);
        }
    }
 
    [RgbProcessor(/*Could not decode attribute arguments.*/)]
    private void ProcessHighDetail(RgbDevice device, Fragment fragment, EffectDetailLevel quality, float time)
    {
        new Vector2(1.6f, 0.5f);
        Vector4 value = Vector4.Lerp(_brainColor, _veinColor, Math.Max(0f, (float)Math.Sin(time * 3f)) * 0.5f + 0.5f);
        for (int i = 0; i < fragment.Count; i++)
        {
            Vector2 canvasPositionOfIndex = fragment.GetCanvasPositionOfIndex(i);
            Vector4 brainColor = _brainColor;
            float dynamicNoise = NoiseHelper.GetDynamicNoise(canvasPositionOfIndex * 0.15f + new Vector2(time * 0.002f), time * 0.03f);
            dynamicNoise = (float)Math.Sin(dynamicNoise * 10f) * 0.5f + 0.5f;
            dynamicNoise = Math.Max(0f, 1f - 5f * dynamicNoise);
            brainColor = Vector4.Lerp(brainColor, value, dynamicNoise);
            fragment.SetColor(i, brainColor);
        }
    }
}