We run the two meshes through the Unreal Engine 3 preprocessing tool and generate a high-res normal map for the renderable mesh, based on analyzing all of the geometry in the detail mesh.

• 然后我们将两个模型通过虚幻3引擎所提供的法线贴图处理工具进行映射加工，从而产生出一张用在低模上的高分辨率法线贴土。