using System;
using System.Collections.Generic;
using UnityEngine;

[ExecuteInEditMode]
[AddComponentMenu("NGUI/Internal/Draw Call")]
public class UIDrawCall : MonoBehaviour
{
	public enum Clipping
	{
		None = 0,
		SoftClip = 3,
		ConstrainButDontClip = 4
	}

	public delegate void OnRenderCallback(Material mat);

	private static BetterList<UIDrawCall> mInactiveList = new BetterList<UIDrawCall>();

	[NonSerialized]
	[HideInInspector]
	public int widgetCount;

	private Material mMaterial;

	private Texture mTexture;

	private Shader mShader;

	private Material mDynamicMat;

	private bool mRebuildMat = true;

	[NonSerialized]
	public bool isDirty;

	private static int[] ClipRange = null;

	private static int[] ClipArgs = null;

	public Texture mainTexture
	{
		get
		{
			return mTexture;
		}
		set
		{
			mTexture = value;
			if (mDynamicMat != null)
			{
				mDynamicMat.mainTexture = value;
			}
		}
	}

	public Shader shader
	{
		get
		{
			return mShader;
		}
		set
		{
			if (mShader != value)
			{
				mShader = value;
				mRebuildMat = true;
			}
		}
	}

	private void Awake()
	{
		if (ClipRange == null)
		{
			ClipRange = new int[4]
			{
				Shader.PropertyToID("_ClipRange0"),
				Shader.PropertyToID("_ClipRange1"),
				Shader.PropertyToID("_ClipRange2"),
				Shader.PropertyToID("_ClipRange4")
			};
		}
		if (ClipArgs == null)
		{
			ClipArgs = new int[4]
			{
				Shader.PropertyToID("_ClipArgs0"),
				Shader.PropertyToID("_ClipArgs1"),
				Shader.PropertyToID("_ClipArgs2"),
				Shader.PropertyToID("_ClipArgs3")
			};
		}
	}

	public static void ReleaseInactive()
	{
		int num = mInactiveList.size;
		while (num > 0)
		{
			UIDrawCall uIDrawCall = mInactiveList[--num];
			if ((bool)uIDrawCall)
			{
				NGUITools.DestroyImmediate(uIDrawCall.gameObject);
			}
		}
		mInactiveList.Clear();
	}
}