#67 glu NURBs rendering is very slow

OpenGLContext v2.0
Context (22)

All gluNurbs rendering examples (redbook and
Context-specific) are showing slow rendering rates,
particularly when a mouse-over occurs.


  • Mike C. Fletcher

    • priority: 6 --> 7
  • Mike C. Fletcher

    Logged In: YES

    The was partially a problem with Context's mouse-event
    queuing, at least under Context. It's still slow if you're
    right up close to the object (it's rendering very high LOD
    then), but is fine if you're some distance away.

    Other part of the problem is that the geometry has no
    optimised path for the selection rendering-pass, so it's
    rendering the whole thing for each pass. Still, the samples
    will render dozens of frames/second if there's no
    mouse-over, so there's something fishy still going on.

  • Mike C. Fletcher

    Logged In: YES

    Nurbs rendering is acceptably fast these days (though it may
    simply be that the hardware has become much faster). Going
    to mark this closed.

  • Mike C. Fletcher

    • status: open --> closed-out-of-date

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