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Blender Developers meeting notes, February 12, 2017


Here are the notes from today's meeting in #blendercoders. Most notably, some bugs crept into 2.78b which means we'll soon see a 2.78c release.

Ton writes:

1) Blender 2.78b performance release

  • Not everything went OK... three issues were reported that would need to be solved:
    1. OSX build had wrong cuda kernels.
    2. GLSL viewport is broken when Light Path node is used
    3. Crash of material preview when using Image sequences
  • Agreed is to update the 'b', to not confuse people we call it a 'c'. Most likely release will be on Wednesday.
  • BTW: Regression tests were updated to include the showstopper cases.

2) The 2.79 release targets

  • Check planning and targets here.
  • Luca Rood: Surface Deform modifier is pretty much ready for master now. SDef tech docs here.
  • Sergey Sharybin: review of catcher patch started, including user side testing.
  • Lukas Stockner: most of the non-essential Denoiser code has been removed locally, will be pushed later.
  • Denoiser needs good docs! Volunteers welcome (makes it faster to get Denoiser in master)
  • Alexander Romanov proposes to add this fix for custom ID properties in 2.79. Is under review still.

3) Blender 2.8 project

  • Julian Eisel wants to get more feedback on Tooltip Guidelines. Decision will be made/confirmed by UI module team via bf-interface list.
  • Bastien Montagne: Blender 2.8 branch gets a 2.8 add-on branch too, to help testing and fix changes in api.
  • Mike Erwin notes great progress on OpenGL task force. Graph is is on the move again.

4) Other projects

  • UPBGE. This topic is still open. We will ask Clement Foucault and Dalai Felinto to feedback on the Viewport/shader issues.
  • Ton Roosendaal suggests to have another midweek 2.8 meeting session, this time with as main topic 2.8. Call will go out in a week, after gathering feedback.
  • The Google Summer of Code application has been finalized. Bookmark this url to give to interested students.



About the Author

Bart Veldhuizen

I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the Blender Artists forum and I'm Head of Community at Sketchfab.


  1. Never thought I'd be so interested in a Grease Pencil function, in all my life. But I am. It's increasingly becoming one of the neatest things in Blender.

  2. Blender is such a complex application, why don't you guys start adding unit-tests for it? This would reduce the chances of regression errors.

    • We do use unit tests, but Blender has a giant code base. Only a small fraction of it is test covered right now, having an (almost) complete coverage is an utopia for the time being.
      I agree unit tests would help reducing the appearance of regressions, but only a bit I'm afraid. Cycles is well covered by unit test and yet, users often find regressions in it.

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