hi dave,
On Thu, Aug 05, 2004 at 09:01:45AM +0200, Dave Neary wrote:
> 
> Actually, no. That's how indexing works in the GIMP. But it is possible to have
> alpha-blended indexed images in PNG. PNG indexes may have an RGBA value, as
> opposed to just the RGB value that we limit things to. Here's the bug jimmac
> opened about this, with a couple of examples of indexed pngs with nice alpha
> channels. http://bugzilla.gnome.org/show_bug.cgi?id=86627
> 
this makes no sense to me.  it might be because i do not understand
alpha.  the way i understand it is that each pixel is assigned a number
that represents a color ....

so you might be talking about (a light just turned on) a number that
represents a color that has four parts. doh.  except when you are still
limited to 256 this will really effect the actual colors and make the
image less eh, colorful after the indexing is done.  meaning if all
those shades of alpha need a different color from the 256 that can be
used then less real colors can be used.

is this how that works?

carol

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