[Gimp-user] Bizzare .png behavior

[Elwin Estle]

Okay, I did a further experiment.  I did alpha to selection on the layer.  Saved the selection to a channel.  Flattened the image, then re-added the alpha channel and used the selection to cut away the white background.

Now, when I save out the image, it works as it should and the filesize is way smaller.  Still won't do what I want in Blender, but that is another matter.


--- On Fri, 7/11/08, Elwin Estle <chrysalis_reborn at yahoo.com> wrote:

> From: Elwin Estle <chrysalis_reborn at yahoo.com>
> Subject: [Gimp-user] Bizzare .png behavior
> To: gimp-user at lists.xcf.berkeley.edu
> Date: Friday, July 11, 2008, 10:35 AM
> This is with Gimp 2.4.6 on Windows XP professional.
> 
> I loaded an image into gimp and selected various aspects of
> it and cut away, i.e. rendered parts of the background using
> layer masks.  What I ended up with were several layers, each
> with a different part of the original image, but still the
> same size as the original, i.e. with a subject surrounded
> by transparency.
> 
> I saved each layer out as an individual image using
> edit>copy and edit>paste as new to save each one as a
> .png file.
> 
> These were then loaded into Blender as texture files.
> 
> Now for the weird part.  If I turn off "use
> alpha" in the Blender texture file options, the
> entire, original image appears, it's as if the .png
> file was saved out just like the original picture, without
> any renders cut from it, etc.
> 
> I viewed the images using Windows Explorer in filmstrip
> mode.  They looked as they should.  I opened one of them in
> Windows Picture and Fax Viewer.  They looked as they should.
> 
> Then, just for the heck of it, I loaded one into Microsoft
> Paint.
> 
> What I got was not a subject against alpha, but the
> original, completely unmodified picture!
> 
> What in heck is going on?
> 
> 
>       
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