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Project Focus : Slimers by Promotion Studio


Remember the 'Slimers' commercial by Promotion Studios? James Neale talks about the project's pipeline and Blender's role in it, how they rebuilt Blender to run on their 64 bit quad-cores machines with 8 gig ram (closed source apps, eat your heart out! ;-) and about trademarked Nickelodeon slime properties. A very cool read.

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. Why doesn't the fluid sim in 64-bit versions of Blender utilize all cores & RAM? Is there a build on that has this fluid sim fix?

  2. Hi, the multi-core fluid sim already exists, it's not something we developed. It wasn't in the released Windows version that we were using though - the point is that we were able to get a new unreleased one compiled including this support, which is something that's a little difficult to do with closed source!

  3. On the fluid-sim-built:
    I've actually written to James Neal directly after reading the interview about the "giving back" and he answered, quoting

    "Slimers required we build a multicore vers of the fluid sim engine.. that tech has already been available to all Blender users for a while.
    Otherwise we used the standard vanilla version from svn."

    I felt a bit stupid for asking him to think about "giving back" and now it's just a special built... From the article I thought they had recoded some parts of the engine and didn't offer a patch back into the mainstream (which would suck).

    Perhaps it should be cleared up in this newsflash, that they didn't do that, but simply compiled a built with some more options applied (if I'm not the only one who read the article wrong).

  4. Hey all
    Yeah, Lars is right, sorry for the confusion.
    We just utilised code that already existed to build a version of Blender specifically to do fluid sims with.
    Once the Quad cores did their work, we had folders and folders of sim calcs which we used in the regular Blender we had on each render node and workstation.


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