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  1. TheoPoilmek
    Post

    Physics.Simulate for a single object - possible ?

    The way to do that in PhysX would be the immediate mode API. I suppose Unity doesn't use it?
    Post by: TheoPoilmek, Apr 15, 2019 in forum: Physics
  2. TheoPoilmek
    Post

    Physics.Simulate for a single object - possible ?

    That sounds incorrect. PhysX itself is deterministic and has flags like PxSceneFlag::eENABLE_ENHANCED_DETERMINISM to deal with edge cases that...
    Post by: TheoPoilmek, Apr 15, 2019 in forum: Physics
  3. TheoPoilmek
    Post

    Official Unity Physics Discussion

    But I did. Just not through Unity. And my point was that it worked fine. Again, I think there's something fishy going on in the Unity...
    Post by: TheoPoilmek, Apr 13, 2019 in forum: Physics for ECS
  4. TheoPoilmek
    Post

    Official Unity Physics Discussion

    Pardon me but if we're suddenly talking about shipping an actual game, 3 hours is actually not that much if it's robust in the end. You really...
    Post by: TheoPoilmek, Apr 13, 2019 in forum: Physics for ECS
  5. TheoPoilmek
    Post

    Official Unity Physics Discussion

    FWIW there's no "character joint" in PhysX. "Ball and joint" sounds like a "ball and socket" joint, a.k.a. spherical joint in PhysX. It doesn't...
    Post by: TheoPoilmek, Apr 13, 2019 in forum: Physics for ECS
  6. TheoPoilmek
    Post

    Official Unity Physics Discussion

    FWIW there's a "createLongChain" function in this snippet, that doesn't use "hacks" and still works fine. But it's using articulations so I guess...
    Post by: TheoPoilmek, Apr 13, 2019 in forum: Physics for ECS
  7. TheoPoilmek
    Post

    Official Unity Physics Discussion

    One thing I don't understand is why isn't Unity doing the "duct tape and hacks" for users under the hood. Exposing half of the PhysX API as-is...
    Post by: TheoPoilmek, Apr 13, 2019 in forum: Physics for ECS
  8. TheoPoilmek
    Post

    Official Unity Physics Discussion

    Well it's PhysX, it has always been "performance by default", not "stability by default" :) But the "hacks" like tweaking inertia tensors are the...
    Post by: TheoPoilmek, Apr 13, 2019 in forum: Physics for ECS
  9. TheoPoilmek
    Post

    Official Unity Physics Discussion

    That looks like a very biased video, conveniently showing a few cherry-picked tests. The original benchmark suite has hundred more. It's also...
    Post by: TheoPoilmek, Apr 12, 2019 in forum: Physics for ECS
  10. TheoPoilmek
    Post

    Official Unity Physics Discussion

    Isn't it just the Dzhanibekov Effect ? It's been supported by Bullet for years - they even have a sample for it IIRC.
    Post by: TheoPoilmek, Apr 12, 2019 in forum: Physics for ECS
  11. TheoPoilmek
    Post

    Official Unity Physics Discussion

    That suggests there is a problem in the setup. You can definitely do stable chains with PhysX. Here's an example using the default joints, but...
    Post by: TheoPoilmek, Apr 12, 2019 in forum: Physics for ECS
  12. TheoPoilmek
    Post

    Official Unity Physics Discussion

    But would it be possible? I got the feeling from the MegaCity presentation that the hierarchical culling etc was kind of hardcoded for that...
    Post by: TheoPoilmek, Apr 12, 2019 in forum: Physics for ECS
  13. TheoPoilmek
    Post

    Official Unity Physics Discussion

    Do you have a source for Chaos being GPU based? I didn't hear that before. FWIW I think you could have "GPU based" rigid bodies right now in Unity...
    Post by: TheoPoilmek, Apr 12, 2019 in forum: Physics for ECS
  14. TheoPoilmek
    Post

    Official Unity Physics Discussion

    FWIW you can do "stateless" physics in PhysX using the immediate mode API:...
    Post by: TheoPoilmek, Mar 22, 2019 in forum: Physics for ECS
  15. TheoPoilmek
    Post

    Official Unity Physics Discussion

    Can you explain why PhysX has a high network cost compared to the others? I didn't follow that bit.
    Post by: TheoPoilmek, Mar 22, 2019 in forum: Physics for ECS
  16. TheoPoilmek
    Post

    Official Unity Physics Discussion

    PhysX is deterministic on the same CPU provided you follow a few rules explained in the docs:...
    Post by: TheoPoilmek, Mar 22, 2019 in forum: Physics for ECS
  17. TheoPoilmek
    Post

    Official Unity Physics Discussion

    This works for them because they have CCD. If you don't have CCD in Unity Physics and replace your heightmap with a triangle mesh, you will get...
    Post by: TheoPoilmek, Mar 22, 2019 in forum: Physics for ECS
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