As far as i understand the neural engine is trained on texture BRDFs which are too memory intensive for most rendering usecases (offline & realtime). The hierar

As far as i understand the neural engine is trained on texture BRDFs which are too memory intensive for most rendering usecases (offline & realtime). The hierarchical model delivers sub-pixel accuracy outperforming mipmaps. So far so good but this is no replacement to tracing a ton of rays. Temporal stability and versatility is questionable. Will be interesting to see how this compares to Unreals Substrate.