Just curious. What are you using to wrap the native C++ classes for
PhysX into .NET? There is PhysX.NET but it uses C++/CLI. Is the goal
portability to Linux/Mono and Mac/Mono as well as windows?
Mike
On 3/17/15 11:28 AM, Mister Blue wrote:
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)
<[email protected] <mailto:[email protected]>>
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 <tel:%28407%29%20242-0209>
------------------------------------------------------------------------
*From:* [email protected]
<mailto:[email protected]>
[[email protected]
<mailto:[email protected]>] on behalf of Sean
M [[email protected] <mailto:[email protected]>]
*Sent:* Monday, March 16, 2015 4:40 PM
*To:* [email protected]
<mailto:[email protected]>
*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
<[email protected] <mailto:[email protected]>> 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
<[email protected] <mailto:[email protected]>>
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
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