Unity : How to convert Render Texture into Texture2d?

ConvertRenderTextureToTexture2d.cs

private static Texture2D toTexture2D(RenderTexture rTex)
{
            int widht = rTex.width;
            int height = rTex.height;

            Texture2D tex = new Texture2D(widht, height, TextureFormat.RGB24, false);
            RenderTexture.active = rTex;
            tex.ReadPixels(new Rect(0, 0, rTex.width, rTex.height), 0, 0);
            tex.Apply();
            return tex;
}