Font3D.LiveKerningLookup
public delegate float Font3D.LiveKerningLookup(char left, char right)Live kerning lookup, typically backed by TextStudio.ThreeD.TTFOutlineProvider.GetKerning(System.Int32%2cSystem.Int32).
Non-serialized — set at runtime so a single TextStudio.ThreeD.Font3D asset can expose
kerning from its embedded TTF bytes without re-baking. Serialized pairs always win.