Sets a non-transposed matrix.
HRESULT SetMatrix( D3DXHANDLE hConstant, CONST D3DXMATRIX* pMatrix );
If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be D3DERR_INVALIDCALL.
A non-transposed matrix contains row-major data; that is, each vector is contained in a row.
Header: Declared in D3dx9shader.h.