Marcus (giraffe.asd.sgi.com!sgi.sgi.com!uunet.uu.net!multigen!Marcus)
Tue, 28 Feb 1995 12:24:10 PST
Wow! I'm being misquoted ;-,
>Does anybody know more about the subject below? I'm getting this sort of
>behaviour... Specifically what I'm seeing is:
>
> * Crashing on pfGetLPointColor() calls with some database's
> * Other pfLightPoint nodes only have sigificant colours in the 0
> index of the node (I gather this is related to the PFGS_OVERALL
> colormode)
>
>Does anybody know if:
>
> * The flight 14.1 loader always uses this PFGS_OVERALL color mode
> (listed in the pfPrint output)
A) No it only uses PFLP_OVERALL (*not* PFGS_OVERALL) when all the point
colors are the same.
> * PFGS_OVERALL is causing Performer to crash in the pfGetLPointColor
> calls?
A) It may be that only pfGetLPointColor( lp, PFLP_OVERALL, color )
works for pfLightPoints with PFLP_OVERALL color binding.
> * The PFGS_OVERALL color mode for lightpoints is documented
> anywhere?
A) The PFLP_OVERALL token is in the include file pf.h. I don't see it
in the documentation either. All versions of the Flight loader
have used it, going back to Performer 1.0, including the V11 loader
which was co-developed by SGI and MultiGen.
>Also I remember hearing about a limitation with Performer and flight
>databases that doesn't allow you to draw a seamless bidirectional
>lightpoint with different colour per side.... Can anybody confirm or
>deny this?
A) OpenFlight bi-directional light points, with different colors (front
and back), are created in Performer using 2 uni-directional
pfLightPoints (180 degrees opposed). Performer 1.2 has a bug that
limits the shape to 179 degrees, so there is a 2 degree "seam" around
the "light" where neither point is visible.
>Experiences anyone?
>
>Thanx
>
> Simon Bennett simonb++at++wormald.com.au
> Wormald Technology Advanced Systems Engineering Ph: +61 2 981 0611 (x512)
Regards,
Marcus Barnes, Member Technical Staff
MultiGen Inc., 1884 The Alameda, San Jose CA, 95126
PH: (408) 261 4118 FX: (408) 247 4329
EMAIL: multigen!marcus++at++uunet.UU.NET
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