The vertex array now has a texture coordinate component instead of a color component.

本章顶点数组用纹理坐标替代了颜色。

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The new texture coordinate is used to index a regular texture map and any other maps applied to the surface.

这个新的贴图坐标被用来索引一般的材质贴图和其他用在表面上的贴图。

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However instead of a color input and color output we now have a texture coordinate input and a texture coordinate output.

使用纹理坐标输入输出替换了之前的颜色输入输出。

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We add refraction to scene rendering and adopt the approach of perturbing the texture coordinate to carry out refraction on the lake. We get over deformation of refraction through masked identifier.

将光线折射加入到场景渲染中，采用纹理坐标扰动方法实现湖面光线的折射，同时，利用掩码标识，克服了折射走样现象。

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The original texture coordinate and height values are already represented in tangent space, so the eye vector must be as well.

原始的材质贴图坐标和高度数据已经在切线空间中了，因此视向量最好也能如此。

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The original texture coordinate and height values are already represented in tangent space, so the eye vector must be as well.

原始的材质贴图坐标和高度数据已经在切线空间中了，因此视向量最好也能如此。

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