Is more geometry the solution to texture smoothness from various angles? With "smoothness" I refer to how much can a texture give the illusion of volume when seen from more extreme/perpendicular angles, if that explains it.
Not much to say here, add more geometry. There are tricks that exist like tesselation but they're not worth implementing when adding another lod will solve it.
More geometry is the easiest solution. If you wanted to get fancy, and know the model is only going to be viewed from a certain angle, you would paint the textures in a way for it to look smoother, but that's really specific and not practical.
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