[Opensim-dev] PhysX Integration into OpenSim

[Mister Blue]

When I added BulletSim to OpenSimulator, it was added as an additional
physics engine and not enabled by default. There are no changes to the base
simulator to add a new physics engine as it is just another module enabled
by INI parameters. If there are large changes to the core simulator, that
is a different matter.

There is a contributors agreement[1][2] that must be executed if  the
sources could be incorporated into the core sources.

All that legaleze being said, I'm looking forward to trying out your
physics engine.

== mb

[1] http://www.overte.org/contribution-agreement.html
[2] http://opensimulator.org/wiki/Contributions_Policy

On Tue, Mar 17, 2015 at 8:02 AM, Maxwell, Douglas CIV USARMY ARL (US) <
douglas.maxwell3.civ at mail.mil> wrote:

>  You bring up some great talking points, Michael, and I'll try to address
> them in a logical order:
>
>
>
> 1)  I agree the submission of one large patch is a bad idea.  We would
> like for the developers to be informed of our work in-situ and even
> participate if they want.  Since this is a major effort, we will be holding
> weekly IPT meetings in MOSES to discuss progress.
>
>
>
> 2)  Does the OpenSimulator project have a formal patch acceptance
> process?  What is your testing and QC regimen?  If you don't have these
> practices in place, I'd be happy to help you formulate.
>
>
>
> 3)  We are attempting to actively engage this list so that you are all
> aware of our work.  If you want to be involved, please speak up.
>
>
>
> 4)  We are acutely aware that we are building on open source software and
> abiding by all licensing terms.  Further, we have made our enhancements and
> grid management software available via GitHub for anyone to download and
> use.  We will be working from our GitHub on this physics effort and you are
> welcome to download the latest code at any time.  We will also be
> submitting patches of our progress periodically to the community once we
> understand what the submission process is.  https://github.com/M-O-S-E-S
>
>
>
> I can only make the code available to you, I cannot make you use it.  We
> are not concerned with backwards compatibility, nor are we concerned with
> SL compatibility.  It is likely there will be a situation where the OS core
> developers may like the new performance or functionality we are working on
> but you may need to massage the code to align it with your requirements.
>
>
>
> v/r -doug
>
>
>
>
>
>
>  Douglas Maxwell, MSME
> Science and Technology Manager
> Virtual World Strategic Applications
> U.S. Army Research Lab
> Human Research & Engineering Directorate
> Simulation & Training Technology Center
> (c) (407) 242-0209 <%28407%29%20242-0209>
>   ------------------------------
> *From:* opensim-dev-bounces at opensimulator.org [
> opensim-dev-bounces at opensimulator.org] on behalf of Sean M [
> mondesire.sean at gmail.com]
> *Sent:* Monday, March 16, 2015 4:40 PM
> *To:* opensim-dev at opensimulator.org
> *Subject:* Re: [Opensim-dev] PhysX Integration into OpenSim
>
>   Thanks for the response Michael. Our PhysX-OpenSim development is now
> underway. We wanted to make the announcement and let the dev community know
> of our plans to share the fruit of our labor.
>
> On Mon, Mar 16, 2015 at 11:56 AM, Michael Emory Cerquoni <
> nebadon2025 at gmail.com> wrote:
>
>> Sounds great Sean, however I must say that submitting monolithic patches
>> into OpenSimulator is not something we tend to accept or encourage, it
>> would be considerably better if development was actively done in smaller
>> pieces so it could be tested on a very wide audience as development is
>> occurring so that the OpenSimulator team can have a say in the process and
>> help out with testing as well, I hardly speak for the entire collective but
>> I can offer my perspective on things being involved in this project from
>> nearly the beginning, I do look forward to seeing what you guys can come up
>> with and I do hope you consider working closer with the OpenSimulator
>> development team and not try to pull off this massive feat in a closed
>> environment, I would hate to see all this work be done and then not end up
>> in OpenSimulator code base.
>>
>>  On Mon, Mar 16, 2015 at 11:49 AM, Sean M <mondesire.sean at gmail.com>
>> wrote:
>>
>>>  Greetings,
>>>
>>>  The MOSES Team has begun the integration of Nvidia's PhysX physics
>>> engine into OpenSim. The effort's motivation stems from a deep review of
>>> the capabilities PhysX can bring the simulator and a number of discovered
>>> limitations that exists with ODE and BulletSim. Abstractly, we want to
>>> improve the overall performance of physics in our grids. Specifically, we
>>> turn to PhysX for its internal multi-threaded capabilities (not just
>>> relying on physics being executed on a separate thread from the OpenSim
>>> core), optimized performance with the use of dedicated GPUs, and the
>>> potential to bring more realistic physics to the system (vehicle movement,
>>> n-bodied physics, etc). Upon completion of this effort, the integrated code
>>> will be shared with the community.
>>>
>>>  PhysX: http://www.geforce.com/hardware/technology/physx
>>> MOSES: http://www.militarymetaverse.org/
>>>
>>>  Best regards,
>>> Sean Mondesire, Ph.D.
>>> MOSES: Virtual World Research Team
>>>
>>>  _______________________________________________
>>> Opensim-dev mailing list
>>> Opensim-dev at opensimulator.org
>>> http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-dev
>>>
>>>
>>
>>
>> --
>> Michael Emory Cerquoni
>>
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>>
>
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