Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
invalid .bmp in 2.8.4
519 views
Skip to first unread message
Tod Mar
Apr 2, 2013, 2:04:23 PM4/2/13
to
I have started using 2.8.4 and am exporting a .bmp file with 32 bit color A8 R8 G8 B8.
I have tried both "Compatibility Option / Do Not Write Color space information" options, Neither works.
Under Visual Studio the error is 'Cannot load file. Unknown bitmap format'.
I think this worked previously but I have to try it.
The bitmap I am trying to create is 3x3 with A channel.
Todd.
I have tried both "Compatibility Option / Do Not Write Color space information" options, Neither works.
Under Visual Studio the error is 'Cannot load file. Unknown bitmap format'.
I think this worked previously but I have to try it.
The bitmap I am trying to create is 3x3 with A channel.
Todd.
Tod Mar
Apr 2, 2013, 2:19:13 PM4/2/13
to
Confirmed that 2.8.4 .bmp cannot be read by 2.4.7 gimp. 2.8.4 creating invalid .bmp files.
Message has been deleted
Paolo Gibellini
Apr 3, 2013, 4:31:57 AM4/3/13
to
Paolo
Tod Mar
Apr 3, 2013, 10:38:43 AM4/3/13
to
rich
Apr 4, 2013, 4:31:02 AM4/4/13
to
On Tue, 02 Apr 2013 11:25:11 -0700, Tod Mar wrote:
> Is there a repository of various Gimp install versions? at least I could
> figure out which version got broken.
> Todd.
Is that 3 pixels by 3 pixels or 3 apples x 3 oranges or what?
For windows easy enough to get old versions, hunt through
http://sourceforge.net/projects/gimp-win/files/GIMP%20%2B%20GTK%2B%20
(stable%20release)/
thats above tinyurled http://tinyurl.com/akdqy5w
linux, could be a problem, you would have to compile probably against
some old packages.
FWIW a quick test.
A Win7 VM with Gimp 2.8.4
Made an image with an alpha channel. Exported as bmp to both A8R8G8B8
with compatibility and without.
A linux Gimp 2.8.2 - both open ok
A WinXP SP2 VM & Gimp 2.6.11, - no compatibility opened but "with
compatibility" lost the alpha channel.
a screenshot of that http://i.imgur.com/h2qTbX0.jpg
File viewers, Things like XnViewMP would not show the alpha in the image
but would show it separately if required. A linux viewer evince showed
compatibility but crashed with no compatibility. FireFox browser gave a
very strange result for both.
Screenshot of that. http://i.imgur.com/hMe3DPT.jpg
Just out of interest, why Gimp version 2.4.x ?
> figure out which version got broken.
> Todd.
Is that 3 pixels by 3 pixels or 3 apples x 3 oranges or what?
For windows easy enough to get old versions, hunt through
http://sourceforge.net/projects/gimp-win/files/GIMP%20%2B%20GTK%2B%20
(stable%20release)/
thats above tinyurled http://tinyurl.com/akdqy5w
linux, could be a problem, you would have to compile probably against
some old packages.
FWIW a quick test.
A Win7 VM with Gimp 2.8.4
Made an image with an alpha channel. Exported as bmp to both A8R8G8B8
with compatibility and without.
A linux Gimp 2.8.2 - both open ok
A WinXP SP2 VM & Gimp 2.6.11, - no compatibility opened but "with
compatibility" lost the alpha channel.
a screenshot of that http://i.imgur.com/h2qTbX0.jpg
File viewers, Things like XnViewMP would not show the alpha in the image
but would show it separately if required. A linux viewer evince showed
compatibility but crashed with no compatibility. FireFox browser gave a
very strange result for both.
Screenshot of that. http://i.imgur.com/hMe3DPT.jpg
Just out of interest, why Gimp version 2.4.x ?
Paolo Gibellini
Apr 4, 2013, 12:25:04 PM4/4/13
to
>Tod Mar on date 03/04/2013 16.38 wrote:
>> Usually Visual Studio loves 24 bit bmp bitmaps.
>>
>> Paolo
>
> Gimp 2.8.4 does create invalid .bmp that previous gimp cannot read.
>
Sorry, I was referring to Visual Studio 2008, unable to manage 32 bit
>> Usually Visual Studio loves 24 bit bmp bitmaps.
>>
>> Paolo
>
> Gimp 2.8.4 does create invalid .bmp that previous gimp cannot read.
>
bitmaps.
And yes, there is some issue with alpha channels in bmp (I've always
used png in VS).
Paolo
0 new messages