The only requirement is that vertex buffers used for software vertex processing must be allocated in system memory.
唯一的要求是用于软件顶点处理的顶点缓存必须在系统内存中分配。
In addition, the following table lists the values that are set for members of the D3DCAPS9 structure for a device in software vertex processing mode.
此外，下表列出设备在软件顶点处理模式中需设置的D3DCAPS9结构的成员的值。
Software vertex processing capabilities are fixed and cannot be queried at run time.
软件顶点处理能力在运行时时固定的，无法查询。
Software vertex processing provides a guaranteed set of vertex processing capabilities, including an unbounded number of lights and full support for programmable vertex shaders.
软件顶点处理提供可保证的顶点处理能力集，包括无限制的光源数量和对可编程的顶点着色器的完全支持。
Software vertex processing provides a guaranteed set of vertex processing capabilities, including an unbounded number of lights and full support for programmable vertex shaders.
软件顶点处理提供可保证的顶点处理能力集，包括无限制的光源数量和对可编程的顶点着色器的完全支持。
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