Unity Texture2D读取像素时出错问题

Texture2D在读取像素处理时，经常会出错，这个时候可以用如下函数先转换：

	public Texture2D DeCompress(Texture2D source){RenderTexture renderTex = RenderTexture.GetTemporary(source.width,source.height,0,RenderTextureFormat.Default,RenderTextureReadWrite.Linear);Graphics.Blit(source, renderTex);RenderTexture previous = RenderTexture.active;RenderTexture.active = renderTex;Texture2D readableText = new Texture2D(source.width, source.height);readableText.ReadPixels(new Rect(0, 0, renderTex.width, renderTex.height), 0, 0);readableText.Apply();RenderTexture.active = previous;RenderTexture.ReleaseTemporary(renderTex);return readableText;}