const GLfloat *model,
                                                const GLfloat *perspective,
                                                const GLint *view )

PARAMETERS
       nurb         Specifies     the     NURBS     object     (created    with
                    gluNewNurbsRenderer).

       model        Specifies a modelview matrix (as from a glGetFloatv call).

       perspective  Specifies a projection matrix (as from a glGetFloatv call).

       view         Specifies a viewport (as from a glGetIntegerv call).

DESCRIPTION
       gluLoadSamplingMatrices uses model, perspective, and view  to  recompute
       the  sampling  and culling matrices stored in nurb.  The sampling matrix
       determines how finely a NURBS curve or surface must  be  tessellated  to
       satisfy    the    sampling    tolerance    (as    determined    by   the
       GLU_SAMPLING_TOLERANCE property).  The culling matrix is used in  decid‐
       ing  if a NURBS curve or surface should be culled before rendering (when
       the GLU_CULLING property is turned on).

       gluLoadSamplingMatrices is necessary only  if  the  GLU_AUTO_LOAD_MATRIX
       property  is turned off (see gluNurbsProperty).  Although it can be con‐
       venient to leave the GLU_AUTO_LOAD_MATRIX property turned on, there  can
       be  a  performance penalty for doing so.  (A round trip to the GL server
       is needed to fetch the current values of the modelview  matrix,  projec‐
       tion matrix, and viewport.)

SEE ALSO
       gluGetNurbsProperty, gluNewNurbsRenderer, gluNurbsProperty

                                                    GLULOADSAMPLINGMATRICES(3G)