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

public class OvrAvatarTextureCopyManager : MonoBehaviour
{
	private struct CopyTextureParams
	{
		public Texture Src;

		public Texture Dst;

		public int Mip;

		public int SrcSize;

		public int DstElement;

		public CopyTextureParams(Texture src, Texture dst, int mip, int srcSize, int dstElement)
		{
			Src = src;
			Dst = dst;
			Mip = mip;
			SrcSize = srcSize;
			DstElement = dstElement;
		}
	}

	private const int TEXTURES_TO_COPY_QUEUE_CAPACITY = 256;

	private Queue<CopyTextureParams> texturesToCopy;

	public OvrAvatarTextureCopyManager()
	{
		texturesToCopy = new Queue<CopyTextureParams>(256);
	}

	public void Update()
	{
		if (texturesToCopy.Count != 0)
		{
			CopyTextureParams copyTextureParams;
			lock (texturesToCopy)
			{
				copyTextureParams = texturesToCopy.Dequeue();
			}
			StartCoroutine(CopyTextureCoroutine(copyTextureParams));
		}
	}

	public int GetTextureCount()
	{
		return texturesToCopy.Count;
	}

	public void CopyTexture(Texture src, Texture dst, int mipLevel, int mipSize, int dstElement, bool useQueue = true)
	{
		bool flag = false;
		CopyTextureParams copyTextureParams = new CopyTextureParams(src, dst, mipLevel, mipSize, dstElement);
		if (useQueue)
		{
			lock (texturesToCopy)
			{
				if (texturesToCopy.Count < 256)
				{
					texturesToCopy.Enqueue(copyTextureParams);
					flag = true;
				}
			}
		}
		else
		{
			CopyTexture(copyTextureParams);
		}
		if (!flag)
		{
			CopyTexture(copyTextureParams);
		}
	}

	private IEnumerator CopyTextureCoroutine(CopyTextureParams copyTextureParams)
	{
		yield return new WaitForEndOfFrame();
		Graphics.CopyTexture(copyTextureParams.Src, 0, copyTextureParams.Mip, 0, 0, copyTextureParams.SrcSize, copyTextureParams.SrcSize, copyTextureParams.Dst, copyTextureParams.DstElement, copyTextureParams.Mip, 0, 0);
	}

	private void CopyTexture(CopyTextureParams copyTextureParams)
	{
		Graphics.CopyTexture(copyTextureParams.Src, 0, copyTextureParams.Mip, 0, 0, copyTextureParams.SrcSize, copyTextureParams.SrcSize, copyTextureParams.Dst, copyTextureParams.DstElement, copyTextureParams.Mip, 0, 0);
	}
}