namespace XCEngine.Rendering
{
    public struct RenderGraphTextureHandle
    {
        private readonly int m_indexPlusOne;

        private RenderGraphTextureHandle(
            int indexPlusOne)
        {
            m_indexPlusOne = indexPlusOne;
        }

        public bool isValid =>
            m_indexPlusOne > 0;

        internal int nativeIndex =>
            m_indexPlusOne > 0
                ? m_indexPlusOne - 1
                : -1;

        internal static RenderGraphTextureHandle
        FromNativeIndex(int nativeIndex)
        {
            return nativeIndex >= 0
                ? new RenderGraphTextureHandle(
                    nativeIndex + 1)
                : default;
        }
    }
}