D3DVSD_CONST

Loads data into the vertex shader constant memory.

Function D3DVSD_CONST(ConstantAddress As Long, Count As Long) As Long
     D3DVSD_CONST = (D3DVSD_MAKETOKENTYPE(D3DVSD_TOKEN_constMEM) Or _
     ((Count) * 2 ^ D3DVSD_CONSTCOUNTSHIFT) Or (ConstantAddress))
End Function

Parameters

ConstantAddress

Address of the constant array to begin filling data. Possible values range from 0 to 95.

Count

Number of constant vectors to load. See Remarks.

Remarks

D3DVSD_CONST and all the constants it uses are found in (SDK Root)\Samples\Multimedia\VBSamples\Common\D3DShaders.bas.

The following code example shows how this function might be used.

Dim Declarator(12) As Long

Declarator(0)  = D3DVSD_CONST(8, 1)
Declarator(1)  = FtoDW(1)
Declarator(2)  = FtoDW(1)
Declarator(3)  = FtoDW(1/255)
Declarator(4)  = FtoDW(1)
Declarator(5)  = D3DVSD_STREAM(0)
Declarator(6)  = D3DVSD_REG(0, D3DVSDT_FLOAT3)
Declarator(7)  = D3DVSD_REG(2, D3DVSDT_D3DCOLOR)
Declarator(8)  = D3DVSD_STREAM(1)
Declarator(9)  = D3DVSD_REG(1, D3DVSDT_FLOAT1)
Declarator(10) = D3DVSD_STREAM(2)
Declarator(11) = D3DVSD_REG(3, D3DVSDT_FLOAT2)
Declarator(12) = D3DVSD_END()

See Also

Direct3DDevice8.CreateVertexShader