Hardware [Question] d Can the 3DS do normal mapping?

[PlayerSlayer69]

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

 

[lone_wolf323]

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

is something like this https://gbatemp.net/threads/wip-rehid-button-remapping-for-3ds.585387/ what you are after?

 

[PlayerSlayer69]

is something like this https://gbatemp.net/threads/wip-rehid-button-remapping-for-3ds.585387/ what you are after?

I was actually talking about Normal Mapping. A graphical technique to to make models have more geometry without adding polygons. (A Wikipedia page to understand better: https://en.m.wikipedia.org/wiki/Normal_mapping)

But thanks for the reply. I still might think about using it

 

[Voxel]

Yes, both are very much achievable on hardware as you've already seen in some games.

To achieve dot3 bump mapping, you need to configure a texture combiner stage to use dot3rgb(a), setting the texture and primary color as the source operands, then pass an object-space (rainbow-colored) normal map to the relevant texture slot and a directional light vector to the primary color (you'll calculate and pass these in the vertex shader). It's a very old technique, and won't look nearly as nice as true normal mapping, but I imagine it also has decent performance over the latter since the operation is done per-texel and not per-pixel.

True normal mapping with a per-pixel light is a little more difficult, but devkitpro provides an example of how to do this. The PICA200 only has a fixed-function pixel pipeline, but provides necessary fragment lighting extensions that are enough to achieve the effect. I'm still a bit sketchy on the details, so I'd advise taking a look though the sample code I linked to get an idea of how it's configured, but it seems very similar to configuring the texture environment, but for per-pixel lighting instead (and this time, you would pass the more well-known blue/pink tangent-space normal map to the texture slot)