Mapping between a Direct3D Declaration and FVF Codes
This table maps members of a D3DVERTEXELEMENT9 declaration to a FVF code.
| Data type |
Usage |
Usage index |
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 |
N/A |
| D3DDECLTYPE_FLOAT3 |
D3DDECLUSAGE_NORMAL |
1 |
N/A |
