The set of commands for vertex shaders is quite small - it contains as little as 17 instructions that work with vector and scalar quantities.
顶点着色器的命令集很小：只包含了17条指令，用于处理矢量和标量。
Vector instructions operate on vectors of scalar quantities and on scalar quantities, where the scalar size is byte, halfword, word, and quadword.
矢量指令作用于标量的矢量及标量，其中标量范围为字节、半字、字和四字。
Vector instructions operate on vectors of scalar quantities and on scalar quantities, where the scalar size is byte, halfword, word, and quadword.
矢量指令作用于标量的矢量及标量，其中标量范围为字节、半字、字和四字。
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