ADOFAIRenderer/Component/PostRenderHook.cs

using System.Reflection;
using HarmonyLib;
using UnityEngine;

namespace ADOFAIRenderer.Component
{
    [DefaultExecutionOrder(int.MaxValue)]
    public class PostRenderHook : MonoBehaviour
    {
        private FieldInfo? _camQuadMeshField;

        private void Awake()
        {
            _camQuadMeshField = AccessTools.Field(typeof(scrCamera), "camQuadMesh");
        }
        
        private void LateUpdate()
        {
            var val = (MeshRenderer)_camQuadMeshField!.GetValue(scrCamera.instance);
            RenderMod.OnPostRender(val.material.mainTexture as RenderTexture);
        }
    }
}