TgluProject

type TgluProject = function(

  objx: GLdouble;

  objy: GLdouble;

  objz: GLdouble;

  const modelMatrix: TGLMatrixd4;

  const projMatrix: TGLMatrixd4;

  const viewport: TVector4i;

  winx: PGLdouble;

  winy: PGLdouble;

  winz: PGLdouble

):GLint;