Your message mentioned an unitialized 4th lighting component, but I
don't see any mention of where that was in the code, or what evidence
contributed to this theory. After a quick perusal of the code, I
don't see any uninitialized 4th elements. I'd be happy to take
another look at something you think is questionable if you point me to
where it is.
Regards,
Curt.
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From: Martin Spott <[EMAIL PROTECTED]>
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Subject: Re: [Flightgear-devel] Re: Flightgear and lighting (WAS: SWTCL vertex data
corruption)
Date: Tue, 18 Feb 2003 16:01:27 +0100 (CET)
> Another issue concerns lightning - an issue that Erik Hofman once repor=
ted
> to have noticed on his O2 (I don't have the posting any more):
> FlightGear looks way too dark when hardware-T&L is enabled for the Rade=
on
> driver. This looks like this (at 11 am local time !):
> http://document.ihg.uni-duisburg.de/bitmap/FGFS/TCL.png
[...]
> On Thu, Feb 13, 2003 at 04:12:46PM +0100, Felix K=FChling wrote:
>> As to the lighting problem, Brian and I discovered a few months ago th=
at
>> an uninitialized (random) fourth component of the light source positio=
n
>> can cause large lighting differences between hardware and software TCL.
>> I made just that mistake :) and Brian pointed it out to me.
Huhu ? Anyone listening ?
Curt told me to bug people with the purpose achieve compatibility between=
=20
FlightGear and the upcoming XFre86-4.3.0 - so I decided to do :-) =20
Obviously DRI people are not really interested very much in this issue, s=
o
anyone else has to be if we want to see this compatibility. I'd really lo=
ve
to see any hint on the topic of light source positions in FlightGear / Pl=
ib.
If this won't be covered, FlightGear might be supposed to display very
strange in future releases of XFree86.
Thanks,
Martin.
--=20
Unix _IS_ user friendly - it's just selective about who its friends are =
!
-------------------------------------------------------------------------=
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--
Curtis Olson IVLab / HumanFIRST Program FlightGear Project
Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED]
Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org
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