using System;
using UnityEngine;

[AddComponentMenu(""), RequireComponent(typeof(Camera))]
public class ImageEffectBase : MonoBehaviour
{
    private Material m_Material;
    public Shader shader;

    protected virtual void OnDisable()
    {
        if (this.m_Material != null)
        {
            UnityEngine.Object.DestroyImmediate(this.m_Material);
        }
    }

    protected virtual void Start()
    {
        if (!SystemInfo.supportsImageEffects)
        {
            base.enabled = false;
        }
        else if ((this.shader == null) || !this.shader.isSupported)
        {
            base.enabled = false;
        }
    }

    protected Material material
    {
        get
        {
            if (this.m_Material == null)
            {
                this.m_Material = new Material(this.shader);
                this.m_Material.hideFlags = HideFlags.HideAndDontSave;
            }
            return this.m_Material;
        }
    }
}