A good starting point is to take a clean texture from the 3d Total Textures DVD into Photoshop as a base layer, and then place other grunge (dirt maps) on top.
一个好的起点是从3dtotal的纹理光盘中找一个干净的纹理在PS里作为基础层，然后放置其他的污损贴图在它上面。
Well as you will notice this Texture CD also includes a few extras such as shadow maps and dirt masks, so lets try putting these into use.
好吧，你可能会注意到这张材质光盘中也包括了一些附加的东西，比如：阴影贴图和污垢的遮罩，所以让我们试着将它们应用进去。
They spend weeks looking through the dirt for pottery, COINS, statues... They put string over the holes to help them make maps.
他们花数周的时间在泥土里寻找陶器、硬币、雕像…他们在洞的上面拉上绳子，来帮助他们制图。
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