Question Is there a way to change the import settings for one specific texture through code?

I've written an editor script to generate ramp textures from gradient arrays, and I'm looking for a way to disable mip map generation for the generated texture on import. Looking through the documentation, it seems like

AssetPostprocessor

works with file paths, but the script I've written allows the user to select where they'd like to save the texture, and I can't figure out how to pass the user-given path to the postprocessor.

One idea I had was to use a single static boolean in the

AssetPostprocessor

-derived class to control the

OnPreprocessTexture

override (or should I say Unity Message?) from my editor script, but on that note, when exactly does

AssetPostprocessor

run? My first guess was whenever

AssetDatabase

operations occur, but I'm saving the texture to disk using

System.File.WriteAllBytes()

rather than

AssetDatabase.CreateAsset

and the Improter still runs (although in hindsight, this makes sense). So is it whenever Unity detects changes in the Assets directory? When the texture is clicked and shown in the inspector?

I'm quite confused.