gluLoadSamplingMatrices — load NURBS sampling and culling matrices
|const GLfloat *||model,|
|const GLfloat *||perspective,|
|const GLint *||view|
view to recompute the sampling and culling
matrices stored in
The sampling matrix determines how finely a NURBS curve or surface
must be tessellated to satisfy the sampling tolerance (as determined by the
The culling matrix is used in deciding 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 convenient to leave the
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, projection matrix, and viewport.)
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