Transforms a 4D vector by a given matrix.
D3DXVECTOR4 * D3DXVec4Transform( D3DXVECTOR4 * pOut, CONST D3DXVECTOR4 * pV, CONST D3DXMATRIX * pM );
Pointer to a D3DXVECTOR4 structure that is the transformed 4D vector.
The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXVec4Transform function can be used as a parameter for another function.
Header: Declared in D3dx9math.h.