The constructor of VertexArray takes the number of vertices (eight), the number of components per vertex (x, y, z), and the size of each component (one byte).
VertexArray构造函数中保存了顶点数量(8个)、各顶点的组件数(x, y, z)以及各组件的大小(1字节)。
One texture unit, texture size limited to 512, vertex light count limited to 4.
一个纹理单元，纹理大小限制为512，顶点光数限制为4。
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