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

[Tom F. <to...@mu...>]

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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