Adds two 3D vectors.
D3DXVECTOR3 * D3DXVec3Add( D3DXVECTOR3 * pOut, CONST D3DXVECTOR3 * pV1, CONST D3DXVECTOR3 * pV2 );
Pointer to a D3DXVECTOR3 structure that is the sum of the two 3D vectors.
The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXVec3Add function can be used as a parameter for another function.
Header: Declared in D3dx9math.h.