Manual
Page 33
If you are not sure which type of your 3D application uses, and you are exclusively for resolving certain incompatibilities within 3D applications that are know which API your 3D application uses, consult the documentation of API (Direct3D® or OpenGL®) your 3D application. ...
If you are not sure which type of your 3D application uses, and you are exclusively for resolving certain incompatibilities within 3D applications that are know which API your 3D application uses, consult the documentation of API (Direct3D® or OpenGL®) your 3D application. ...