Re: Undocumented pfLightPoint function
John Rohlf (jrohlf++at++tubes)
Fri, 17 Feb 95 9:42:45 PST
> While we're on the subject of Performer documentation and Performer
> lightpoints... Can anybody explain why it doesn't seem possible to
> resize lightpoints beyond about 4 pixels on a RE^2 while pfAntialias is
> set to PFAA_ON??? The documentation for Performer lightpoints states
> that they can be sized as per the pntsize/pntsizef manpage... this
> doesn't seem to be the case. I've got GL code that runs on the same
> machine which can size points well beyond 4 pixels. Albeit under
> multisampling they are kinda square. (pntsmooth()'ed point are round
> however).
>
> Should the documentation for pfAntialias() or pfLPointSize() be updated?
> Or am I doing something wrong here?
>
> Or is the behaviour scheduled to change for a future release?
>
Multisampled, round, light points are a special back-door
feature that Performer uses. The size is clamped to ~3.5 pixels
for firmware reasons. These points are enabled with PFAA_ON and
are much faster than normal pntsmooth points. If you want bigger points
you can draw polygons or you can call glcompat(1011, 0); which
will disable multisampled, round points.
This archive was generated by hypermail 2.0b2
on Mon Aug 10 1998 - 17:50:58 PDT