Before changing everything again, can we go back to the revision that 
introduced the change in the first place and maybe understand why it was done? 
There was probably a reason, even if it wasn't a good one, understanding why 
might be useful.

Martin

--- On Tue, 2/22/11, Sean Olson <seanol...@gmail.com> wrote:

> From: Sean Olson <seanol...@gmail.com>
> Subject: Re: [Bf-committers] normal maps, red/green channel inverted
> To: "bf-blender developers" <bf-committers@blender.org>
> Received: Tuesday, February 22, 2011, 4:35 PM
> I also could not agree
> more.   Some standardization here would get
> rid of
> plenty of headaches.  To be clear, the step that I
> would like to avoid is
> under:
> "GIMPing the image" on this page:
> http://www.foro3d.com/f217/blender-normal-mapping-76567.html
> 
> (It's basically just instructing to invert the green
> channel)
> 
> <http://www.foro3d.com/f217/blender-normal-mapping-76567.html>I
> believe it
> worked this way in 2.49 and currently works this way also
> though I have not
> tested very recently.
> 
> If I recall the results of the last mailing list
> conversation on this
> subject, the consensus was that there is no 'standard' on
> ways to do normal
> mapping so Blender's is as good as anybody else's, and is
> not technically
> 'wrong'.  The problem is that most of the other apps
> have standardized in
> 'the other method'.  I tried tracking the email thread
> down, but after about
> an hour of digging have given up.
> 
> -Sean
> 
> 
> On Tue, Feb 22, 2011 at 12:26 PM, Morten Mikkelsen 
> <mikkels...@gmail.com>wrote:
> 
> > >
> > > >Make it standard please, nmaps are something
> that you usually share
> > > >between softwares. no point in forcing
> headaches to users
> > >
> > > >Daniel Salazar
> > >
> >
> > May your first born be a son and may your harvest be
> plentiful!! :)
> > I could not agree more. That's exactly why this patch
> needs to go in asap.
> > Normal maps are indeed typically exported between
> tools.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > >
> > >
> > > 2011/2/22 Knapp <magick.c...@gmail.com>:
> > > > Just provide an external tool or add-on to
> fix the files. Perhaps pop
> > up
> > > a
> > > > warning: this file has a broken bump-map,
> run XXX to fix it.
> > > >
> > > > On Tue, Feb 22, 2011 at 7:45 PM, Thomas
> Dinges <blen...@dingto.de>
> > > wrote:
> > > >
> > > >> I wouldn't do a hackish button either,
> if it works correct as in 2.49
> > > >> it's fine and all we need.
> > > >>
> > > >> Am 22.02.2011 19:33, schrieb Ton
> Roosendaal:
> > > >> > Hi all,
> > > >> >
> > > >> > The situation is worse apparently;
> up to Blender 2.49 the normal
> > maps
> > > >> > were fine, but the "newbump" patch
> in 2.51 made red channel become
> > > >> > badly inverted.
> > > >> >
> > > >> > Having it work like in 2.49 is of
> course correct. Brings up the
> > > >> > question if we should provide a
> hackish button to support bad normal
> > > >> > maps created in the alpha/beta
> period.
> > > >> >
> > > >> > Morton's&  Mario's
> proposal is to not do this. I agree, it only
> > makes
> > > >> > UI uglier... :)
> > > >> >
> > > >> > -Ton-
> > > >> >
> > > >> >
> > >
> ------------------------------------------------------------------------
> > > >> > Ton Roosendaal  Blender
> Foundation   t...@blender.org
> > > www.blender.org
> > > >> > Blender
> Institute   Entrepotdok 57A  1018AD
> Amsterdam   The
> > > Netherlands
> > > >> >
> > > >> > On 20 Feb, 2011, at 14:45, Dalai
> Felinto wrote:
> > > >> >
> > > >> >> Instead of "old Blender Normal
> maps" couldn't it be "invert color
> > > >> >> channels [tooltip: old Blender
> Normal Maps - invert red/green
> > > >> >> channels"? Or Blender was
> really the only software out there using
> > > >> >> those inverted?
> > > >> >>
> > > >> >> I remember this being discussed
> a while ago (1year or +) but don't
> > > >> >> remember what was the outcome
> of it.
> > > >> >>
> > > >> >> --
> > > >> >> Dalai
> > > >> >>
> > > >> >> 2011/2/20 Ton Roosendaal<t...@blender.org>:
> > > >> >>> Hi,
> > > >> >>>
> > > >> >>> I think Carsten's proposal
> is the nicest way, even when a bit
> > > "ugly".
> > > >> >>> We can add a version patch
> in .blend files that sets this button
> > > >> >>> active for all old .blends,
> but not active for newly created
> > > >> >>> textures.
> > > >> >>>
> > > >> >>> -Ton-
> > > >> >>>
> > > >> >>>
> > > >>
> >
> ------------------------------------------------------------------------
> > > >> >>> Ton Roosendaal 
> Blender Foundation   t...@blender.org
> > > >> www.blender.org
> > > >> >>> Blender
> Institute   Entrepotdok 57A  1018AD
> Amsterdam   The
> > > >> >>> Netherlands
> > > >> >>>
> > > >> >>> On 19 Feb, 2011, at 23:47,
> Carsten Wartmann wrote:
> > > >> >>>
> > > >> >>>> Am 19.02.2011 23:08,
> schrieb Dalai Felinto:
> > > >> >>>>> I wonder if instead
> of a commandline it would be possible to do
> > > >> >>>>> this
> > > >> >>>>> conversion with
> Python. I'm not sure of the current status of
> > bpy
> > > >> >>>>> for
> > > >> >>>>> image handling, but
> it would be neat to have an addon for that.
> > > >> >>>> My idea was having a
> Button inside the Texture Context, Image Tab
> > > >> >>>> (beneath the Normal Map
> Button) to use "old Blender Normal maps".
> > > >> >>>>
> > > >> >>>> Carsten
> > > >> >>>> --
> > > >> >>>> Carsten Wartmann: Autor
> - Dozent - 3D - Grafik
> > > >> >>>> Homepage:   
>      http://blenderbuch.de/
> > > >> >>>> Das Blender-Buch: http://blenderbuch.de/redirect.html
> > > >> >>>>
> _______________________________________________
> > > >> >>>> Bf-committers mailing
> list
> > > >> >>>> Bf-committers@blender.org
> > > >> >>>> http://lists.blender.org/mailman/listinfo/bf-committers
> > > >> >>>
> _______________________________________________
> > > >> >>> Bf-committers mailing list
> > > >> >>> Bf-committers@blender.org
> > > >> >>> http://lists.blender.org/mailman/listinfo/bf-committers
> > > >> >>>
> > > >> >>
> _______________________________________________
> > > >> >> Bf-committers mailing list
> > > >> >> Bf-committers@blender.org
> > > >> >> http://lists.blender.org/mailman/listinfo/bf-committers
> > > >> >>
> > > >> >
> _______________________________________________
> > > >> > Bf-committers mailing list
> > > >> > Bf-committers@blender.org
> > > >> > http://lists.blender.org/mailman/listinfo/bf-committers
> > > >>
> > > >>
> _______________________________________________
> > > >> Bf-committers mailing list
> > > >> Bf-committers@blender.org
> > > >> http://lists.blender.org/mailman/listinfo/bf-committers
> > > >>
> > > >
> > > >
> > > >
> > > > --
> > > > Douglas E Knapp
> > > >
> > > > Creative Commons Film Group, Helping people
> make open source movies
> > > > with open source software!
> > > > http://douglas.bespin.org/CommonsFilmGroup/phpBB3/index.php
> > > >
> > > > Massage in Gelsenkirchen-Buer:
> > > > http://douglas.bespin.org/tcm/ztab1.htm
> > > > Please link to me and trade links with me!
> > > >
> > > > Open Source Sci-Fi mmoRPG Game project.
> > > > http://sf-journey-creations.wikispot.org/Front_Page
> > > > http://code.google.com/p/perspectiveproject/
> > > >
> _______________________________________________
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> > > > Bf-committers@blender.org
> > > > http://lists.blender.org/mailman/listinfo/bf-committers
> > > >
> > > _______________________________________________
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> > > Bf-committers@blender.org
> > > http://lists.blender.org/mailman/listinfo/bf-committers
> > >
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> > http://lists.blender.org/mailman/listinfo/bf-committers
> >
> 
> 
> 
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