Flexible Vertex Format Flags

The flexible vertex format (FVF) is used to describe the contents of vertices stored interleaved in a single data stream. A FVF code is generally used to specify data to be processed by fixed function vertex processing.

The following flags defined by the CONST_D3DFVFFLAGS enumeration, describe a vertex format.

Flexible vertex format (FVF) flags

D3DFVF_DIFFUSE

Vertex format includes a diffuse color component.

D3DFVF_NORMAL

Vertex format includes a vertex normal vector. This flag cannot be used with the D3DFVF_XYZRHW flag.

D3DFVF_PSIZE

Vertex format specified in point size. This size is expressed in camera space units for vertices that are not transformed and lit, and in device-space units for transformed and lit vertices.

D3DFVF_SPECULAR

Vertex format includes a specular color component.

D3DFVF_VERTEX )

Same as specifying (D3DFVF_XYZ Or D3DFVF_NORMAL Or D3DFVF_TEX1).

D3DFVF_XYZ

Vertex format includes the position of an untransformed vertex. This flag cannot be used with the D3DFVF_XYZRHW flag.

D3DFVF_XYZRHW

Vertex format includes the position of a transformed vertex. This flag cannot be used with the D3DFVF_XYZ or D3DFVF_NORMAL flags.

D3DFVF_XYZB1 through D3DFVF_XYZB5

Vertex format contains position data, and a corresponding number of weighting (beta) values to use for multimatrix vertex blending operations. Currently, Microsoft® Direct3D® can blend with up to three weighting values and four blending matrices.

Texture-related FVF flags

D3DFVF_TEX0 through D3DFVF_TEX8

Number of texture coordinate sets for this vertex. The actual values for these flags are not sequential. For information on additional texture-related FVF flags, see the CONST_D3DFVFTEXTUREFORMATS enumeration.

Mask values

D3DFVF_POSITION_MASK

Mask for position bits.

D3DFVF_RESERVED0 and D3DFVF_RESERVED2

Mask values for reserved bits in the flexible vertex format. Do not use.

D3DFVF_TEXCOUNT_MASK

Mask value for texture flag bits.

Miscellaneous

D3DFVF_TEXCOUNT_SHIFT

The number of bits by which to shift an integer value that identifies the number of a texture coordinates for a vertex.

See Also

Vertex Formats, Geometry Blending