Sven Neumann wrote:
> Hi,
> On Mon, 2008-12-29 at 09:56 +0100, Roel Schroeven wrote:
>> I have some BMP-files that GIMP doesn't load correctly; GIMP shows
>> almost the whole image as transparent instead of the real image data.
>> Only a small region is visible, and even that with partial transparency.
>> The image doesn't contain any transparency though (I don't even think
>> BMP supports transparency).
>> Other image editors and viewers such as Irfanview and Paint.NET open the
>> image correctly.
> I am not so sure about that. The image opened in GIMP has all the
> information and an alpha channel. If you change the alpha channel to be
> all opaque, then you will see the image as shown by other viewers you
> tried. So I would rather assume that the other viewers don't support
> masks in BMP files and just ignore that extra information. As long as
> that is not sorted out, you should not file this as a bug report against
> GIMP. It is quite likely that the bug is elsewhere.
> Sven

Sven is right. I just did:
"Add Layer Mask" -> "Transfer layer's alpha channel", check "Invert 
Mask", then file -> open as layers -> open the original image, flatten 
and the image is O.K.
So it is not a bug in GIMP, but maybe in the way the image was saved 
with this mask.

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