反射：使用反射向量的方向作为坐标。环境映射需要这种输入。
Refl: Uses the direction of the reflection vector as coordinates. You will need this input when Environment Mapping.
目的介绍D3D中环境映射的基本概念，详细论述用D3D实现立方体环境映射和球面环境映射的过程。
Aim to introduce the basic concepts of environment mapping in D3D, and detailedly discuss the process of using D3D to realize cubic and spherical environment mapping.
还包括的是SOATransactionDefinition文件，它定义了业务事务、环境映射，和每个服务消息中包含的数据。
Also included is the SOA transaction Definition file, which defines the business transaction, context mapping, and data included in each service message.
还包括的是SOATransactionDefinition文件，它定义了业务事务、环境映射，和每个服务消息中包含的数据。
Also included is the SOA transaction Definition file, which defines the business transaction, context mapping, and data included in each service message.
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