Direct3D 声明与 FVF 代码之间的映射 (Direct3D 9)

此表将 D3DVERTEXELEMENT9 声明的成员映射到 FVF 代码。

数据类型	使用情况	使用情况索引	FVF
D3DDECLTYPE_FLOAT3	D3DDECLUSAGE_POSITION	0	D3DFVF_XYZ
D3DDECLTYPE_FLOAT4	D3DDECLUSAGE_POSITIONT	0	D3DFVF_XYZRHW
D3DDECLTYPE_FLOATn	D3DDECLUSAGE_BLENDWEIGHT	0	D3DFVF_XYZBn
D3DDECLTYPE_UBYTE4	D3DDECLUSAGE_BLENDINDICES	0	D3DFVF_XYZB (nWeights+1)
D3DDECLTYPE_FLOAT3	D3DDECLUSAGE_NORMAL	0	D3DFVF_NORMAL
D3DDECLTYPE_FLOAT1	D3DDECLUSAGE_PSIZE	0	D3DFVF_PSIZE
D3DDECLTYPE_D3DCOLOR	D3DDECLUSAGE_COLOR	0	D3DFVF_DIFFUSE
D3DDECLTYPE_D3DCOLOR	D3DDECLUSAGE_COLOR	1	D3DFVF_SPECULAR
D3DDECLTYPE_FLOATm	D3DDECLUSAGE_TEXCOORD	n	D3DFVF_TEXCOORDSIZEm (n)
D3DDECLTYPE_FLOAT3	D3DDECLUSAGE_POSITION	1	不适用
D3DDECLTYPE_FLOAT3	D3DDECLUSAGE_NORMAL	1	不适用

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