I've been researching for some time now the Relief Texture Mapping (https://www.inf.ufrgs.br/~oliveira/RTM.html), and I'm trying to identify implementations of this technique and its improvements in the industry (mainly game engines and rendering softwares) but I can't find anything about it.
Do the usual methodologies have a better cost benefit? What is this based on? Are there difficulties in implementing this technique such as lack of a tool or optimizations?