C#将RenderTexture转为Texture2D

  private Texture2D RenderTextureToTexture2D(RenderTexture texture)
    {
        RenderTexture RT = RenderTexture.active;
        RenderTexture.active = texture;
        Texture2D texture2D = new Texture2D(texture.width, texture.height);
        texture2D.ReadPixels(new Rect(0, 0, texture2D.width, texture2D.height), 0, 0);
        return texture2D;
    }