Marco Crocetta (giraffe.asd.sgi.com!sgi.sgi.com!relay.iunet.it!hpdtmt2!onyx)
Thu, 15 Jun 95 18:20:26 METDST
I'm developing a Performer application on a ONYX RE2.
In the scene to render, I use a NURBS surface to simulate
the sea surface motion.
The NURBS is rendered in the pre-draw callback using the GL calls
nurbssurface(....).
At first, I was running with only one RM4, but just now I have bought
another one, so I can use multisampling and antialiasing features.
Things go well if I force multisample disabling, calling multisample(FALSE).
If I leave multisample enabled, whith the default framebuffer configuration
supplied by the function pfuGLXWinopen in libpfutil, I see that the NURBS
increases a lot the number of his polygons.
Using the default framebuffer configuration supplied by the function
pfuGLXWinopen in libpfutil (8 bits for subsample and 24 bits for Z buffer
with a full resolution of 1280*1024), I see that the number of polygons
in the NURBS increases a lot.
The question is:
Is there any relationship between NURBS surfaces and multisample ?
Thanks in advance
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Antonio Diotallevi
DATAMAT SpA, Rome
e-mail: onyx++at++datamat.it
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