This is a very cool project! And @mattpiz is completely correct that this kind of advanced use of textures is beyond what’s possible in elm-3d-scene currently, although supporting custom shaders and fixing the 65536 vertex limit are certainly on the roadmap. Standard normal maps should be supported soon, though, I have everything working locally (as far as I can tell!) and just need to do some more testing/playing around with the API.
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