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 Forum index » Advanced Topics » Additional Software (PETs, n' stuff) » Graphics
mtpaint 3.49.12- April 2016
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wjaguar

Joined: 21 Jun 2006
Posts: 335

PostPosted: Fri 18 Mar 2016, 04:46    Post subject:  

don570 wrote:
Tahr pup was always okay. The patch doesn't affect it.
It's Ubuntu Tahr that needs the patch.

Precisely. And the difference between the two is: Ubuntu inserted into GTK+2 a shitty module for perverting scrollbars, and Tahrpup left the module out.
Quote:
Raspberry pi Jessie to test because I read that
it uses gtk3

GTK+3 is irrelevant.
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Sat 19 Mar 2016, 16:32    Post subject:  

updated to version 3.49.02
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Mon 21 Mar 2016, 20:27    Post subject:  

Quote:
wjaguar Version 3.49.03

Fixed [ ] keys for next/prev color
Fixed compilation on Windows
Disabled liboverlay-scrollbars-gtk2 to get rid of glitches on Ubuntu
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Tue 22 Mar 2016, 20:25    Post subject:  

version 3.49.03 is available in first post

_________________________________

I also made a fatdog 64 bit version

mtpaint-fatdog-3.49.03-x86_64-PET.txz

___________________________________
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Tue 29 Mar 2016, 12:40    Post subject:  

version 3.49.04

Quote:

Added option for gamma-corrected alpha blending
Made *_row() and render_layers() parallelizable
Switched simple luminance formulae to integer math
Fixed "Transform colour" sometimes losing original palette (since 3.44.81)
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Wed 30 Mar 2016, 15:05    Post subject:  

Updated to version 3.49.04 Laughing

I noticed the following. I'm not sure if it's a bug or feature???

Steps:

1) open a gif
2) make an alpha channel with several levels of alpha
3) put the result in a clipboard
4) paste in a gif ----> only the highest level of alpha will paste in the window

5) paste in a 24 bit rgb image and all levels of alpha in the clipboard is
respected

I assume this is the regular behaviour of the gif format because only one color
is chosen to be transparent
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wjaguar

Joined: 21 Jun 2006
Posts: 335

PostPosted: Thu 31 Mar 2016, 02:35    Post subject:  

don570 wrote:
I assume this is the regular behaviour of the gif format because only one color is chosen to be transparent

All indexed images support only on-off transparency. Because alpha mixing would produce colors not existing within their palette.
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Thu 31 Mar 2016, 16:49    Post subject:  

Updated to version 3.49.06. Working well Cool

_________________________________________

Quote:
All indexed images support only on-off transparency

Does the PNG image format support on/off transparency as well
as an alpha layer (0 to 255 levels)?

_________________________________________________
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wjaguar

Joined: 21 Jun 2006
Posts: 335

PostPosted: Thu 31 Mar 2016, 17:36    Post subject:  

don570 wrote:
Does the PNG image format support on/off transparency as well as an alpha layer (0 to 255 levels)?

Transparency in PNGs is a complicated story.
https://www.w3.org/TR/PNG/#11tRNS
https://www.w3.org/TR/PNG/#6Colour-values
Basically, the format was designed by control freaks, and combining color-key transparency with alpha is forbidden "because reasons". Same as combining alpha with indexed color (!).
mtPaint works around the latter limitation by writing its own chunk type, like for the other two utility channels. But the former one is just not worth the hassle; color-key is virtually never used with RGBA, and with indexed+alpha the problem does not arise.

But as image formats go, the only one where standard allows indexed+alpha is TIFF - and even there, not all readers honor it (GIMP does, however).
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Tue 05 Apr 2016, 18:37    Post subject:  

version 3.49.07 available at first post. Works well.
I'm using it with fatdog arm distro. Cool
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Sat 09 Apr 2016, 15:53    Post subject:  

Recent improvements by Dmitri:

09
Added path selector & format chooser to "Configure animation"
Allowed layers to stay visible in canvas while "Configure animation" is active
Fixed lockups in layers renderer in threaded mode (since 3.49.07)
Fixed another glitch with modal dialogs (since 3.44.97)

08
Simplified animation view logic
Made canvas window unaffected by animation

07

Multithreaded layer rendering
Zoom up to 8000%
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Wed 13 Apr 2016, 13:31    Post subject:  

New version 3.49.09 available on first post.

I noticed that this version won't run on tahr 6, but it's easy to
compile --->
Code:
./configure release intl --prefix=/usr
make
make install


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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Thu 21 Apr 2016, 18:01    Post subject:  

version 3.49.10 available
_______________________

An obscure bug... gifview shows the wrong animation...

Method:

Make a gif animation but save one of the layer images as png format.

Export an animation under 'File' menu --> however use the same name as another
gif animation previously made. You will see an error message
because of the png image, but gifview will show the previous animation.



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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Thu 21 Apr 2016, 18:12    Post subject:  

The raspberry pi forum reported successful compiling of mtpaint

Code:
    sudo apt-get install build-essential git libgettextpo-dev liblcms-dev argyll libjpeg-dev libtiff-dev libgtk2.0-dev libpng-dev zlib1g-dev libgif-dev
    git clone https://github.com/wjaguar/mtPaint.git
    cd mtPaint
    ./configure intl
    make -j4


I suggested libjasper-dev as well
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don570


Joined: 10 Mar 2010
Posts: 5085
Location: Ontario

PostPosted: Thu 02 Jun 2016, 18:33    Post subject:  

new version 3.49.12 at git
https://github.com/wjaguar/mtPaint/tree/master
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