Determines the product of the given matrix and the current matrix.
HRESULT MultMatrixLocal( CONST D3DXMATRIX * pMat );
If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be D3DERR_INVALIDCALL.
This method left-multiplies the given matrix to the current matrix (transformation is about the local origin of the object).
m_pstack[m_currentPos] = (*pMat) * m_pstack[m_currentPos];
This method does not add an item to the stack, it replaces the current matrix with the product of the given matrix and the current matrix.
Header: Declared in D3dx9math.h.