When a texture map representing an uneven surface is applied to a flat polygon, the surface appears to get flattened.
当使用材质贴图在光滑的多边形上表现一个粗糙的表面时，那个表面看起来像是平坦的。
2
Signs of sun damage to the skin include wrinkles, brown spots, an uneven complexion and a tough, leathery skin texture.
晒伤的迹象包括皮肤的皱纹、色斑、肤色不均以及粗糙的皮肤纹理。
3
Ordinary texture mapping can simulate three-dimensional objects relatively smooth surface, it is difficult to show that the surface of ups and downs, uneven results.