D3DXMatrixMultiplyTranspose function (D3DX10Math.h)
Calculates the transposed product of two matrices.
Syntax
D3DXMATRIX* D3DXMatrixMultiplyTranspose(
_Inout_ D3DXMATRIX *pOut,
_In_ const D3DXMATRIX *pM1,
_In_ const D3DXMATRIX *pM2
);
Parameters

pOut [in, out]

Type: D3DXMATRIX*
Pointer to the D3DXMATRIX structure that is the result of the operation.

pM1 [in]

Type: const D3DXMATRIX*
Pointer to a source D3DXMATRIX structure (left hand side).

pM2 [in]

Type: const D3DXMATRIX*
Pointer to a source D3DXMATRIX structure (right hand side).
Return value
Type: D3DXMATRIX*
Pointer to a D3DXMATRIX structure that is the product of two matrices.
Remarks
The result is the transposed of the product of two transformation matrices, Out = T(M1*M2).
The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXMatrixMultiplyTranspose function can be used as a parameter for another function.
This function is useful to set matrices as constants for vertex and pixel shaders.
Requirements
Header 

Library 

See also