Krita/Sprint2011

Krita Sprint 2011

When?

The Krita sprint is held on 20. May til 22. May.
We will gather at the Blender Institute, you can come since 10 A.M. there

Where?

Blender Institute, Amsterdam, Netherlands
Address: Blender Institute, Entrepotdok 57A 1018AD Amsterdam, The Netherlands

Where we sleep?

Stayokey hostel
Address: Amsterdam Zeeburg, Timorplein 21, 1094 CC Amsterdam, Netherlands
~20 minutes walk from Blender Institute
we have got 2x 6 bed rooms
Lukas will send you email with instructions about the hostel

Attendance

Note

Fill out at least the travel costs and if you need accommodation and sponsorship. For the travel cost please give an rough estimate.

Name	estimated travel costs	accommodation needed?	sponsorship needed?	Arrives	Leaves	Travel information
Lukáš Tvrdý	not yet known	yes	yes	friday	sunday	by airplane or train
David Revoy	256.12€	yes	yes	friday - 14h30	mon - 14h30	by airplane (Toulouse)
Timothée Giet	around 300€	yes	yes	friday	sunday	by airplane or train
Boudewijn Rempt	not yet known	yes	yes	friday	sunday	by airplane or train
Sven Langkamp	Blender Institue ~80€ Linuxhotel ~0€	yes	yes	friday	sunday	by train
Matus Talcik	0	yes	yes	friday	sunday
Dmitry Kazakov	around 320€	yes	yes	friday	sun/mon	by airplane
Silvio Grosso	n/a	not in Amsterdam	yes	friday	sun/mon	n/a
Cyrille Berger	around 150€	yes	yes	friday	sun/mon	by airplane
Bugsbane	XXXX€	yes	yes	Friday	Sun/Mon	by airplane
Adam Celarek	200	yes	yes	friday	sunday
José Luis Vergara	1870 + ~30 USD	yes	yes	saturday 11:25	friday 27th	by airplane

Doodle: http://doodle.com/h65u9utpib6p6qtq

Invited people

Artists&users:

David Revoy
Animtim
Silvio Grosso

Possible other invites:

pippin -- discussions about the performance of the Krita

Programme

demonstration of the various other painting software -- what do you miss in Krita?
pizza
goals for the next 12 months
breakout sessions on various topics.

Outlines of the first organization meeting

Live version is here: http://piratepad.net/KritaSprintOutlines

Ideas for sprint

Performance:
1) Photoshop7 as a reference of performance
2) Long time ago it was believed that the lack of speed was provoked by general code to support many colorspaces (PS7 and Gimp (used to) support RGB,CMYK,G only). We need to prove or refute this statement.
3) Discuss multithreaded subsystem for tools (dmitryK + ?)
4) Based on 3) discuss abilities to implement mipmapping (as a long-term plan)
5) Automatic speed-regression testing (like the thing implemented by pippin)
6) ROI for the scheduler -- are we interested in it, how much performance we can gain with it?

Memory consumption:
Krita is the greediest raster graphics app I have seen in action. We need to somehow fix our memory consumption, for instance through in-memory compression of tiles.

Technologies:
OpenCL does not provide toolchain, Photoshop is faster without SSE3 (and, probably without OpenGL (need check),

Organization:
1) either focus on one topic (performance vs usability) 
   votes:
       performance : LukasT, dmitryK, Animtim
       usability (that empowers performance) : Bugsbane 
2) having both:
   a) parallel BoFs 
   b) one day performance, one day usability
3) a general track on day 1, BoF on day 2

pippin is interested, but might be occupied

Some non-related topics:
1) Discuss the system to save arbitrary data between strokes (DmitryK + LukasT)
2) Listem to a lecture from LukasT on the topic "Brush Mask Generation and Friends" (DmitryK) =)
3) Comic Book Studio
4) Release a training DVD about comics drawing with Krita (Animtim)

Result

Summary

This sprint brought together not only developers of Krita, but also four artists who work with the program. The artists demonstrated how they work with Krita. Thanks to that presentation, many issues were logged, some of them were fixed over the next week. Direction for Krita for the next year was discussed: Krita is okay for creating art, but changes have to be made to get it ready for the professional user. There are still some performance issues (little speedbumps, memory consumption) which need to be fixed.

Achievements

More than sixty new issues were logged
Quite a few issues were fixed during the sprint
Discussed the direction for improving Krita
Screencasts of artists working with Krita ([1], [2], [3], [4])