using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.XR.ARFoundation;

public class CameraGrainURP : MonoBehaviour
{
    [SerializeField]
    ARCameraManager m_CameraManager;
    public ARCameraManager cameraManager
    {
        get { return m_CameraManager; }
        set { m_CameraManager = value; }
    }

    Renderer m_Renderer;

    const string k_NoiseTextureProperty = "_NoiseTex";
    const string k_NoiseIntensityProperty = "_NoiseIntensity";

    void OnEnable()
    {
        if(m_CameraManager == null)
        {
            m_CameraManager = FindObjectOfType<ARCameraManager>();
        }

        m_Renderer = GetComponent<Renderer>();
        m_CameraManager.frameReceived += OnReceivedFrame;
    }
    
    void OnDisable()
    {
        m_CameraManager.frameReceived -= OnReceivedFrame;
    }
    void OnReceivedFrame(ARCameraFrameEventArgs eventArgs)
    {
#if UNITY_IOS
        if(m_Renderer != null && eventArgs.cameraGrainTexture != null)
        {
            if (m_Renderer.material.HasProperty(k_NoiseTextureProperty))
            {
                m_Renderer.material.SetTexture(k_NoiseTextureProperty, eventArgs.cameraGrainTexture);
            }

            if (m_Renderer.material.HasProperty(k_NoiseIntensityProperty))
            {
                m_Renderer.material.SetFloat(k_NoiseIntensityProperty, eventArgs.noiseIntensity);
            }
        }
#endif
    }
}