Guide
Seamless textures
Control repeat, scale, and edge continuity so materials tile cleanly on large surfaces.
Core idea
A good material page explains the surface model first, then shows how controls affect exportable maps.
Map relationship
Every channel should describe the same surface so color, height, normal, roughness, and AO agree.
Export judgment
Before export, test tiling, scale, normal strength, roughness range, and final target requirements.