Appendix:Substrate Materials

We can almost consider our section on Materials complete. But wait, why did I say almost? Well, that’s because everything explained so far is related to traditional or legacy Materials. Starting with UE 5.2, an entirely new type called Substrate Materials has been introduced. They are truly innovative, and they are poised to eventually replace the current Material system. However, this is more of a long-term goal, and the current Material system will likely remain as an option. As of the current version, UE 5.3, the traditional Material system is still the default and official system, while Substrate Materials are experimental, not even in beta, which doesn’t make it very clear how or when this transition will happen.

For these reasons, I believe it’s worth introducing these new Materials now, even though you may not use them for production any time soon. Even the official documentation encourages experimentation but not shipping...