[Opensim-dev] BulletSim update for Windows and linkset crashes

[Mister Blue]

Large meshes can take a while to be converted into physical hulls[1]. I
notice this with something like Nebadon's racer (linkset of meshes) --
riding the car makes it physical and the CPU maxes out for a few seconds
and the car is unridable until it is meshed.

So, if there is a problem, it could be that the vehicle mesh has to be read
in (from cache or asset store), converted into a mesh, then converted into
a hull. All the while, your NPC is trying to sit on it.

There is no programatic way to tell if a linkset is fully physical and
operational. All I can suggest is adding some delays if there are problems.

-- mb

[1] If you don't supply a physics, hull representation of the mesh
(possible with the mesh file format), BulletSim uses a HACD algorithm to
turn the mesh into a set of convex hulls. This algorithm is recursive and,
sometimes, slow.

On Mon, Dec 1, 2014 at 5:45 AM, Ai Austin <ai.ai.austin at gmail.com> wrote:

> At 12:00 01/12/2014, Mister Blue wrote:
>
>> I just checked into the 'master' branch an updated version of BulletSim
>> that hopefully fixes Mantis 7371 [1] and Mantis 7364 [2] and 7191 [3]. The
>> changes are a new compilation that seems to fix the Windows mesh crash and
>> additionally adds 'incomplete linkset' logic that should reduce the errors
>> caused by linksets waiting for assets to be fetched.
>>
>> I'm sure the bleeding edge testers will find the problems
>>
>
>
> Thanks Mister Blue... I will test soon on Openvue and Ailand grids.
>
> I have a question... in one region I have an NPC that is automatically
> refreshed after a new OpenSim version is installed and restarted.... and
> the behaviour of this NPC after its created i to immediately sit in the
> pilot seat or a vehicle that itself is a very complex multi-part mesh (my
> Supercar test mesh)
>
> Could that cause any specific issues on fresh OpenSim build for region
> startup if the linkset is large and postboy delayed past the point where
> the NPC attempts the automated sit down?
>
>
> _______________________________________________
> Opensim-dev mailing list
> Opensim-dev at opensimulator.org
> http://opensimulator.org/cgi-bin/mailman/listinfo/opensim-dev
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://opensimulator.org/pipermail/opensim-dev/attachments/20141201/bca0d982/attachment.html>