ADOFAIRenderer/Core/PostRenderHook.cs

using System.Collections;
using System.Reflection;
using HarmonyLib;
using UnityEngine;

namespace ADOFAIRenderer.Core;

[DefaultExecutionOrder(int.MaxValue)]
internal class PostRenderHook : MonoBehaviour
{
    private FieldInfo? _camQuadMeshField;

    private void Awake()
    {
        _camQuadMeshField = AccessTools.Field(typeof(scrCamera), "camQuadMesh");
    }
        
    private void LateUpdate()
    {
        if (RenderManager.Instance)
            RenderManager.Instance.OnLastUpdate();
            
        StartCoroutine(PostFrameCoroutine());
    }

    private IEnumerator PostFrameCoroutine()
    {
        yield return new WaitForEndOfFrame();
            
        var val = (MeshRenderer)_camQuadMeshField!.GetValue(scrCamera.instance);
        if (RenderManager.Instance)
            RenderManager.Instance.OnPostFrame(val.sharedMaterial.mainTexture as RenderTexture);
    }
}