多重纹理从原则上讲全部可以被多次渲染所替代，因为多重纹理实际上就是将多次渲染中的每遍中的纹理在一遍中进行操作。因此我们首先介绍一下多次渲染，然后概要介绍一下多重纹理的使用方法和实现的效果。-multiple texture principle all can be replaced by repeatedly exaggerated, because multiple texture is actually to exaggerate the number of times each of the texture again for the operation. Therefore, we first introduce repeatedly exaggerated, then outlined what the texture of multiple use and the achievement of results.