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Thread: Pixar Universal Scene Descriptor

  1. #1
    while loop
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    Default Pixar Universal Scene Descriptor



    This seems exciting!

    http://graphics.pixar.com/usd/
    When art critics get together they talk about Form and Structure and Meaning. When artists get together they talk about where you can buy cheap turpentine.

    —Pablo Picasso

  2. #2
    Principal Tech Animator
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    It appears to offer a lot more flexibility in terms of external referencing and custom scene definitions than that of Alembic. If it were to become a truly universal format, or FBX replacement, it seems it would need a better level of animation support rather than model/vertex transform bakes. This doesn't directly suit their needs of course as they have custom methods to pair with their Presto rigs it sounds. I applaud them for continuing to push universal formats. It won't suit my needs but I'm not a direct user by any means at this point in time.
    Randall Hess
    Principal Technical Animator
    TechAnim Blog
    @Meatplowz

  3. #3
    while loop
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    Seems really interesting to me (and our niche ;) ). I don't see that as an FBX contender. I'd rather see it as a scene-version of alembic (while considering alembic as a geometry format). FBX is trying to get original procedural data across as much as possible, and i have yet to see an exchange format that even remotely manages to support a majority of features, let alone plugins or in-house tools.

    I really dig the idea of having USD + Alembic at the core of a pipeline.

    The only real issue i currently see is that windows support for alembic is REALLY bad. I assume this will be similar for USD. Application support is also "not ideal".

    Regards,
    Thorsten

  4. #4
    method btribble's Avatar
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    Coming from Pixar, it seems oriented towards film production not games (duh!), so I wouldn't be an early adopter. Also, I'm minorly irked that they came up with yet another text/file format. It looks easy enough to parse, but why do I want to support another format when there are so many others with good parsers and tools available? They explicitly say in the slides that it isn't file format specific, so they're obviously aware of this and trying to get ahead of these complaints. They could have just cloned the MEL/JavaScript syntax pretty easily if they wanted it to look like code instead of data and this wouldn't be an issue. Regardless, I welcome more open source formats if they pursue it...

  5. #5
    while loop
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    I have not read and viewed everything yet. But from what i saw it seemed that there is an API including everything you need to include support. Also it is not plain ascii, the geometry is binary but still offers an ascii editor which seemed kinda neat. Also it definitely fills a gap for me (Vizualisation, Animation, VFX managing highly complex data sets (mostly automotive)). I can see how it might not really appeal to gamedev tho.

    Regards,
    Thorten

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