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Sketching Meetup in Brussels

Journal Entry: Mon Sep 14, 2015, 1:06 AM

Is there any Deviant following my journal living around Brussels?

Join me on Sunday 20 September 2015 at 13h30 in front the Museum of Natural Sciences ; I'll spend my afternoon inside sketching minerals, shells, dinosaur skeletons (the museum is famous for having the largest Dinosaur Gallery in Europe! it looks really good on their website ). We can form a little sketching group inside, and meet each other. We can share feedback, tips, and improve after a good afternoon. I'll personally work on my shape vocabulary to sketch better fantasy creatures and environments. Beginners, students, hobbyist or professionals are welcome!

More info, and official blog thread :…


Devious Journal Entry

Journal Entry: Thu Feb 12, 2015, 8:22 AM

My open webcomic, got a new website, and it's now online ! :happybounce: 

Check the three long making-of of episode 3, 4 and 5 under 'webcomic' ; the fan-arts gallery, and a fully illustrated 'Philosophy' page.
Pages are also now faster, and I can host the 1GB of 'Sources' directly.

I also cleaned my blog : , tagging all 300 articles licenses so now you can search content by license, or software. (eg: )
Feel free to send any feedback about it if you meet a problem or see an easy improvement.

Challenge now: finish to draw long episode #6  'Potion challenge' , answer all emails and finish freelance artworks.

Chaos and Evolution - 1h30 of open tutorials

Journal Entry: Fri May 31, 2013, 2:04 AM

On my recent 'move cleaning' , I decided to release my full Chaos&Evolutions DVD to the public for free on Youtube. So, to not post every chapter separated, I remixed all the main lessons into a 1h30 epic-to-render HD video ( in Kdenlive ). I also did cut, merge, etc...  The tool used ( Gimp-painter 2.6 ) on the video is outdated , but the core course is still ok and the DVD wasn't about the tool anyway. Any digital painting software ( Krita, Mypaint, SAI, Photoshop , etc... )  should work for it. Those basic and simple lessons will feet beginners in research of more self discipline and a structured workflow about the act of painting using layers and digital tools as a global concept.  For more advanced user ; the content might be too simplistic and I'm ready to receive rants about it too. Maybe one day I'll do a Chaos&Evolutions˛ for advanced hard-core technics and skill , but only when my technic will be more more advanced, I still work on it   >:-)

More infos, full dynamic menu on the video description ( under the video )  on the Youtube video page . Feel free to share and comment.
Thanks to all who purchased by the past the real DVD & thanks for watching ( and obviously , thx Youtube for hosting this 1h30 HD file ).

Why are you using open-source ?

Journal Entry: Wed May 1, 2013, 6:50 AM

[ picture : I'm moving soon, and while I'm cleaning, I found in the bottom of my bookshelves my old software licenses.  I took a quick photo on the ground to keep a souvenir. ]

"What lead you to use FLOSS ( free/libre open-source software ) on :tux: ? ... are you poor ? utopic ? or ignorant about Pro softwares? ..."

(^_^; )  ...
It's in fact a really frequented-asked-question I get, over and over.
I thought writing a blog post about it could explain it, at least make my life easier in the future when someone ask.
A sensible topic... And you, why are you using mostly open-source ?

Read the detailed blog post here

Free Painting Workshop in Madrid

Journal Entry: Sat Mar 30, 2013, 9:12 PM

I'll offer as a volunteer a free workshop with many art tips at the Libre Graphic Meeting 2013 in Madrid.
Any Deviant watcher from Spain or around ? The workshop will be in english.

Experienced or beginner are welcome, with or without Krita on :tux: . Feel free to come to discover, share, practise.
More infos about the workshop content, place, etc... on my blog…

QuickTip 1 : Krita user interface, working values

Journal Entry: Sat Feb 2, 2013, 3:39 AM

For black and white artworks or when you need to spend long time working on the values in your process , you 'll probably appreciate this Krita tips ...

Specific Color Selector

- Add the docker 'Specific Color Selector'  ( Top menu : Settings > Docker > Specific Color Selector )
- Check the box 'Show Colorspace Selector'
- Turn the model to 'Grayscale'
- Uncheck the 'Show Colorspace Selector'
- Resize the box to have a long width
... Now you have a wider range of selection for selecting precisely a value

Light pollution around

- To dim down all the polluting back-light of your display around artwork and help you to focus on your artwork, a good idea to change Krita for a darker theme.
Top menu : Setting > Theme >  ...then choose.
I tend to work more in the 'Krita-blender' theme, or as on the screenshot above  'Krita-darker'
Note : Gnome / Xfce / Unity users may have a bad rendering. Install kde-style-oxygen package , and setup it with qt4-qtconfig to solve

- Also, you can dim the value of the color 'around the canvas' in Krita
Top menu : Settings > Configure Krita -> ( display icon on the left column ) -> Canvas border :  'Color'
Depending the mood, I use or a dark value here ( 50 ) or a mid one ( 128 ) , but rarely above

Keyboard shortcut

You can press at any moment while painting this two mnemonic shortcuts
K for 10% darKer value
L for 10% Lighter value
Also, as a reminder : I for less opacIty,  and O for more Opaque are just above , and M for Mirroring view ...

Save your workspace

Krita can save 'workspace'  witch mean you can save mukltiple dockers positions depending your activities, or workflow
Toolbar : Last icon -> Insert a name -> Save
ex : here I have my trusty 'Black-White_1200x1600' workspace ready to launch for my screen.

Top Screenshot : Krita 2.7pre-alpha, built from source on :tux: Linux Mint KDE 14. artwork  : Water-Dragons cooking place by Deevad

Mypaint 1.1 : A guide through the new features

Journal Entry: Fri Jan 4, 2013, 5:19 PM
At the very end of 2012, the code of the famous free and open-source digital-painting program Mypaint 1.1 was released. If you still using Mypaint 1.0 , you might be interested to see what happened into this one year of change. For reading an excellent review about it , please read the very cool and full article wrote by Alexandre Prokoudine on Libre Graphic World , he also made a cool video.

Here I will focus on writing a review for Mypaint 1.0 user, to let them know what changed and how they will benefit from it.

On Canvas Notifications

Now Mypaint is a bit more talkative when you press '+' or '-' on the keyboard to zoom with the 'Control+Space' shortcut. It was difficult back to Mypaint 1.0 days to have an idea of the actual zoom level. For the future development , this box system was made to be reusable ; so Mypaint might have better and better visual feedbacks on the next versions.The notifications are activated by defaults , and concern for the moment only the zoom level. To set them off or on : Menu > View > Feedbacks  ;

Symmetry mode

An icon on the toolbar allow you to activate the symmetric painting mode. The axis displayed is a bold dotted orange line also part of the new ; 'on canvas ' feedbacks. ; To display the axis or hide it : Menu > View > Feedback.The feature is very young and the axis is actually centered to the viewport, so take care if you zoom out or pan the canvas.

Line Mode

Mypaint 1.1 is now really able to do precise drawing, more technical, such as perspectives, or comics frames. This is not aimed to be a feature as flexible as in a vector programs (ex: Inkscape ) ; , but its now very capable to get the work done and having very cool results for your perspectives drawing, concept art of props , etc ...On the toolbar an icon will invite you to switch between various tracing mode , there is 4 : Freehand , Lines, Line Seq , Ellipse. Under them there is a graph , where you can tweak 4 points. Those 4 points represent a simulation of pressure ; input on left and output on right.

On the screen under you can see how even more complex presets ( here watercolor_expressive from the set#2 ) are traced real time while you deform them. Also, you can see how the 'Line Pressure' parameters works when the input in low, and output is high.

Each 'Line Mode' have it's own little secret of key combinations with Shift for extra features :

Freehand mode + hold Shift
A shortcut to do a straight lines, perfect to draw perspective grid

Freehand mode + press then release shift
A shortcut to do a straight lines , but constrained to every 15°, good if you need to draw square , rectangle ( framing thumbnails, drawing comics frame, or drawing the an horizontal horizon line on a perspective drawing. )

Lines Mode and Lines Sequences : Create a lines , then drag and drop with Shift
A shortcut to bend the lines interactively on the canvas as you can see on picture with red curve under representing various preset bend.
or Ctrl while drawing
constrained to every 15°

Ellipses + hold Shift during creation
A shortcut to rotate the ellipse

Ellipses + hold Ctrl during creation
A shortcut to constrain ellipse to be a circle

New layer blending modes

One of the revolution in the precedent release were the addition of 4 layer blending modes. Now, the number of them grew to 16 and are compatible with Krita ( for Gimp, still take care of two particularity : they have a 'color' mode incompatible with Mypaint and Krita, and also have a 'overlay' mode broken , a duplicate of the 'soft light' , probably solved in series post 2.8 ).

For Krita user, the Mypaint color blending equivalent mode can be found on Krita under the HSY > Color.


This feature solved the number one public enemy ; bug report of all precedent version of Mypaint : the non ability to frame. Now Mypaint can still benefit of the infinite canvas feature, but you can set a frame on the top and resize. This framing zone will be the ; only part exported if you save to PNG or JPG , the outside limit of the canvas will be saved if you use the Open Raster format, ORA . If you open a painting with Mypaint from another application , you may want to turn on the 'Enabled' frame ( I have a shortcut for this ). Your picture dimension will be locked. And Mypaint don't round to 64px everything as in 1.0 anymore.

Convert to normal

On the main menu, Layer > Convert to normal mode ; is another innovation from the Mypaint developers ; it allows to 'bake' the pixels of a layer and render them as a normal blending mode. On the picture under, the textured 'soft light' channel was converted to a 'normal' layer blending mode with keeping the same aspect ( of course, picture loose flexibility , the layer bellow are less editable ).

Change color (wash)

On of the first on-canvas color chooser of old Mypaint, who disappeared on version 0.7 . I'm really happy to see it back in 1.1 ; I missed it. This color selector offer an explosive fractal flower of colors ; with variation of hue, saturation and lightness. It's intuitive and remind me the traditionnal palette.attribute it a shortcut by going over the item, and pressing a key : Mypaint Menu > Color > Change color ( wash )

Gamut mask

Masking the gamut is popular on traditional painting : and also happen frequently when your tubes of colors are empty , or when you limit yourself to use only some tubes of colors. Restricting the range of color , or masking the gamut , was also really well explained by a famous traditional painter James Gurney . I personnaly really learned a lot with his book : Color and Light. Mypaint 1.1 is the first digital painting application to support Gamut masking , in a digital fashion. Here under is a study with a split complimentary mask. I still need to train with it. I see a lot of potential in this feature especially to have interesting color palette and original renderings.

You can set a lot of various mask , at 1 click away ( bottom right icon of the color palette ) , and move the shapes, etc... The user interface is really easy to learn.

New color selector

A new color selector replace the old one, and propose now :- a HCY Hue and Chroma : ; All the color on the circle have the same lightness intensity ( Y ) nearest of human color perception. - a HSV ; Hue and saturation : Linear and dependent of the RGB value and screen device, Blender user will be familiar with this one. - a palette , compatible with Gimp *.gpl palette files- a classic color triangle , HSV too. Thats the one I use the most ( I'm used to have same in Krita / Inkscape / Gimp ) , but I move slowly to the HCY Hue and Chroma- another HSV under the layout of a square , Photoshop user will be familiar with this one. ; ( not you can also rotate the H, S, V in it )- last tab is for rulersTips : - you can at any moment bookmark a color to the palette , icon in also on the bottom right- if you double click on the square of the actual color on the bottom , another color selector will open , where you can enter values, useful is you have to deal with webdesign/interface elements ( ex : ; entering a grey #7B7B7B ) ,

Color brush blending mode

Brush blending modes where each dabs strokes affect the color bellow is a different feature than layer blending mode. Mainly because you can save the effect into a preset, and because the effect can get stronger as they are pilling on the canvas.

Color blending mode ( HSY ) is one of the first.

Multiply blending mode for glazing will surely be on the way to the next releases , and I guess the 'layer>convert to normal' feature is already a first stone to allow painting with Brush blending modes even on a transparent layer.


Now the Preferences panel can offer you the possibility to map a important number of action to special key ; as tablet and stylus button , or Shift, Ctrl ( named Primary ) , etc...

Brush settings

Brush settings is a panel you can call with pressing 'Control+B' or by going in the menu > Brush > Setting Windows. Nothing really changed on the appearence ( except the top tabs button, with labels now ; ) , but the Brush preset of 1.1 are in a new format. Old preset are still compatible. My own kit of preset is the set #2. Tips : if you modify a brush size , opacity and want the change to be permanent ; open the settings, then press the 'save settings' button.


Mypaint official download page :…
Windows version is still not ready. A bug in one of the library make the tablet not working. Tumagonx is still alone on working on Windows portablity. Linux user will be able to compile the source code ( follow the README inside the source code archive ) , and distributions will certainly provide it via system updates in your package management of their next release. Ubuntu 's based Linux can use the easy PPA ; of Andrew Chadwick :…

Mypaint team

A lot of effort, hours were done on this release ; :
- Martin Renold ( aka maxy ), creator and leader of the project.
- Andrew Chadwick ( aka achadwick ) who made Gamut mask, frame feature, ; color selector, notifications and many more.
- Jon Nordby (aka jonnor ) who worked a lot on cleaning the brush engine, library , performances.
- Richard Jones ( aka optigon ) who made all the Line modes. - and of course, all other contributors , translators, and testers.

If you now cross this nicknames on IRC freenode channel #mypaint or on the forum , thanks them for the awesome work they do around this open-source software. They already started the road to 1.2.

License of the article :
Images and text on this article are licensed under a CC-By : Any usage of it ( copy paste / translating / commercial / publishing / derivations, etc ... ) ; are allowed if providing back the credit "by David Revoy" . Full license :…

( PS : Well... that was long to write, now I blemish imagining doing the same thing for the release of Krita 2.6 ... oh my.... it will be long )

Install notes for Ubuntu/Linux

Journal Entry: Tue Oct 2, 2012, 12:05 PM
Install notes for the Open-sources digital painting software I use on Ubuntu/Linux (12.04 ) ;
to install the recent version of them, in a terminal copy this line by line :

Mypaint 1+Git:
sudo add-apt-repository ppa:achadwick/mypaint-testing
sudo apt-get update
sudo apt-get install mypaint

Krita 2.5.2 :
sudo add-apt-repository ppa:kubuntu-ppa/backports
sudo apt-get update
sudo apt-get install krita

Gimp 2.8 and G'Mic :
sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update
sudo apt-get install gimp gimp-gmic

[update] more detailed infos ; on my blog [here]