D3DFVF_TEXCOORDSIZEN

Constructs bit patterns that are used to identify texture coordinate formats within a FVF description. The results of these macros can be combined within a FVF description by using the OR operator.

#define D3DFVF_TEXCOORDSIZEN(CoordIndex) 
#define D3DFVF_TEXCOORDSIZE1(CoordIndex) (D3DFVF_TEXTUREFORMAT1 << (CoordIndex*2 + 16)) 
#define D3DFVF_TEXCOORDSIZE2(CoordIndex) (D3DFVF_TEXTUREFORMAT2) 
#define D3DFVF_TEXCOORDSIZE3(CoordIndex) (D3DFVF_TEXTUREFORMAT3 << (CoordIndex*2 + 16)) 
#define D3DFVF_TEXCOORDSIZE4(CoordIndex) (D3DFVF_TEXTUREFORMAT4 << (CoordIndex*2 + 16))

Parameters

CoordIndex

Value that identifies the texture coordinate set at which the texture coordinate size (1-, 2-, 3-, or 4Dimensional) applies.

Remarks

The D3DFVF_TEXCOORDSIZEN macros use the following constants.

#define D3DFVF_TEXTUREFORMAT1 3 // one floating point value
#define D3DFVF_TEXTUREFORMAT2 0 // two floating point values
#define D3DFVF_TEXTUREFORMAT3 1 // three floating point values
#define D3DFVF_TEXTUREFORMAT4 2 // four floating point values

The following FVF description identifies a vertex format that has a position; a normal; diffuse and specular colors; and two sets of texture coordinates. The first set of texture coordinates includes a single element, and the second set includes two elements:

DWORD dwFVF = D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_DIFFUSE |
              D3DFVF_SPECULAR | D3DFVF_TEX2 |
              D3DFVF_TEXCOORDSIZE1(0) |  // Uses 1D texture coordinates for
                                         // texture coordinate set 1 (index 0).
              D3DFVF_TEXCOORDSIZE2(1);   // And 2D texture coordinates for 
                                         // texture coordinate set 2 (index 1).

See Also

D3DFVF