Because searching up it’s GPU. You’re able to find a list of Maestro functions that it could do and Bump mapping is one of them but what about normal mapping? I’ve seen people who know a decent amount about technology that said the 3DS does have normal mapping and bump mapping at the same time. Although the Wikipedia page does say the 3DS does support Dot3 Bump Mapping/Normal Mapping so to an extent it does but likely a much older and less modern technique of it. I have seen games like Jett Rocket 2 and Ironfall invasion that seem to have some sort of Normal mapping trick that probably can’t be done with bump mapping or Dot3. But hey let me know or not