RE: [GD-Windows] Image formats (was [Algorithms] Scrolling starfi eld)

[Andrew G. <ag...@cl...>]

You can "fix" (or at least unbreak) this if you take Targa.8BI from PS6 and
place it in the PS7/plugin directory. Not ideal but at least a workaround if
you've upgraded to PS7 for other features.

The other negative point is that I don't believe Photoshop supports alpha in
palletised formats which is a bind. Currently we have to take a 32-bit targa
and use another package to convert it to 8-bit.

I agree with Brian, Adobe's attitude smacks of arrogance and a lack of
knowledge about what their customers are actually using their product for.

Someone suggested PNG which looks good, but doesn't do palettised alpha
sadly :(

Andrew Grant-
Climax Brighton 



> -----Original Message-----
> From: Tom Forsyth [mailto:to...@mu...]
> Sent: 31 July 2002 16:19
> To: gam...@li...
> Subject: RE: [GD-Windows] Image formats (was [Algorithms] Scrolling
> starfi eld)
> 
> 
> Oh dear god. We were literally just today evaluating PS7, 
> having used PS6
> until the current project was done (hooray! Crunch time 
> over!). After these
> comments we've had a fiddle round with it, and alpha-channel 
> support is so
> totally broken. Even when we can get it to work correctly for 
> alpha=0 or
> alpha=1, the edges are wierdly rubbish, as if some 
> premultiplying has gone
> on.
> 
> So that's one package we're not going to be "upgrading" to 
> until this is
> fixed. The benefits of PS7 are marginal, and such a 
> fundamental chunk of
> functionality is broken. We hereby vote with our wallets :-)
> 
> Thanks for the heads-up everyone.
> 
> 
> Tom Forsyth - purely hypothetical Muckyfoot bloke.
> 
> This email is the product of your deranged imagination,
> and does not in any way imply existence of the author.
> 
> > -----Original Message-----
> > From: brian hook [mailto:bri...@py...]
> > Sent: 31 July 2002 16:11
> > To: gam...@li...
> > Subject: Re: [GD-Windows] Image formats (was [Algorithms] Scrolling
> > starfield)
> > 
> > 
> > > What formats are people using for images these days? We're 
> > currently 
> > using
> > > TGA which "suffices" but isn't great due to Adobe less than 
> > embracing 
> > the
> > > concept of alpha channels.
> > 
> > Photoshop 7 completely and utterly broke TGA support, but you can 
> > supposedly go back and get the TGA exporter from PS6 and copy 
> > up to PS7 
> > and it starts working again.
> > 
> > This is OT, but damn, Adobe has the most piss poor attitude 
> I've ever 
> > seen.  When this TGA screwup was brought to their attention, their 
> > response was three fold:
> > 
> > - testers should have pointed it out to them, hence it's not 
> > their fault
> > 
> > - no one mentioned that alpha was being used "that way" (for games)
> > 
> > - using alpha channel "that way" is clearly against the spec, 
> > and game 
> > developers are relying on "broken" behaviour (i.e. TGA 
> > support in PS up 
> > through PS6), so it's really their fault
> > 
> > That, coupled with the completely broken PNG support in 
> > Photoshop, has 
> > just made me really dislike Adobe.
> > 
> > Anyway, we use TGA, JPG and PNG.  TGA if we need alpha or 
> 16-bit; JPG 
> > if we need lots of compression; and PNG if we need the files to be 
> > compressed individually.
> > 
> > -Hook
> > 
> > 
> > 
> > 
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