Re: Antialiasing and IR

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Jean Daigle (jaydee++at++ATSaerospace.com)
Fri, 8 Nov 1996 17:30:17 -0500


Hi!

On Nov 8, 2:27pm, "Russell Suter" wrote:
...
} We reciently upgraded an Onyx from an RE2 to IR. The Onyx is running IRIX
} 6.2 now as well. The application runs Performer 1.2 and is being compiled
} on an Indy running IRIX 5.2. For some reason, it appears that on the new
} configuration, Antialiasing is turned off where it has always been on before.
} I tried to turn it on with pfAntialias(PFAA_ON) and that didn't seem to work.
} I also tried to do a pfOverride with limited success. Now, things that are
} relatively far away in the scene seem to have nice smooth edges while stuff
} that's close in has jagged edges. Is there something I'm missing or can
} I do some configure magic on the IR that will make it work like the RE2 did?
} All I need is something quick that will work until I get around to porting
} the code to OpenGL, Performer 2.0 and IRIS 6.2. Any help is much appreciated.
...
}-- End of excerpt from "Russell Suter"

My experience is that Performer 1.2 doesn't explicitly know
about iR hardware. It defaults to treating it as some older
(e.g., VTX class) machine.

The bottom line is that multisample antialiasing and transparency
don't work, because Performer believes the machine to be some
retrograde hardware.

At least texture works!

I was pleasantly surprised that it worked at all.

You really do need to port to Performer 2.x. The script
        /usr/share/Performer/src/tools/port2.0

will be very helpful in that regard.

It might even take less time than wrestling with pfOverride()!

:-)

Regards,
Jean Daigle.

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