Re: spotlight

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Gordon Tomlinson (gordon++at++apollo13.demon.co.uk)
Fri, 17 Apr 1998 10:19:52 GMT

Hi Sam

>Dear Mr. Tomlinson:

It's Gordon please :-)

>
> I use town demo file. Beside the terrain geometry there are
>lots of house. So I think it won't just falling within a polygon.
> Or so I make a terrain which 10*10 m per polygon, but the effect
>is just the same.
> I saw the source code "shadows.c" under ~/pguide which very like
>what I want to simulate, but did I need a projected texture to
>simulate a spotlight?
>
>

Apologies I missed the use of projected texture spot ;-(

Ok. What version of Perfomer are you using ??

If it is Pre 2.2 then there is a perfomer bug ( no patch that I am aware of ,
I believe it has been fixed in 2.2, but I have not had time to check :-( )
 that prevents Projected spots from correctly working in multi process mode..
( APP, CULL, DRAW etc )

Are running in MP mode is so try running it in single mode and see if it works,

I have some code that I used to create a torch effect, that I will dig out
and send to you over the weekend if you require it ( let me know ), the code works
for perfomer 2.1 in SP mode or and I seem to remember that it also worked
by having the Cull and Draw in the same mode.

TTFN

Gordon Tomlinson
System Manager
PERA VR
Technology Centre
Nottingham Road
Melton Mowbray
Leicestershire
LE13 0PB
U.K.
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