- int gluUnProject(
- GLdouble winx,
- GLdouble winy,
- GLdouble winz,
- const GLdouble modelMatrix[16],
- const GLdouble projMatrix[16],
- const GLint viewport[4],
- GLdouble *objx,
- GLdouble *objy,
- GLdouble *objz
- );