Specular aliasing with high frequency normal map details

[gkjohnson]

I think there used to be a way to generate a normal map and roughness map pair with mipmaps from a root normal map but I don’t seem to be able to find that example, now. @donmccurdy may recall?

This is another issue from this forum on the same / similar topic (specular aliasing at subpixel geometry detail):

Having Geometric Specular Antialiasing would be incredible

Hello! How’s going? I’m working on a offsceen canvas model visualizer for fine art prints that we make in our creative studio. It’s a PBR workflow and so far, it looks really good. However, at certain angles, the aluminum material from the back of the object will cause a lot of specular aliasing on it. It was a lot worse before because the front face of the aluminum object (just behind the artwork plane) would be lit by the environment map, so I had to set a black 1.0 roughness material to it.…