Gazebo 8.0.0 startup error on Arch Linux with Ogre 1.10.5 (Request for Information)

[osrf-migration]

Original report (archived issue) by Tim Rakowski (Bitbucket: Tim Rakowski).

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Hi,

I understand that you don't actively support gazebo on Arch Linux, and this is only a request for information, not a "bug report".

When running "gazebo --verbose" (Gazebo 8.0.0) on Arch Linux, where ogre currently has version 1.10.5, we get the following error on startup:

[Err] [server_main.cc:54] Ogre Error:ItemIdentityException: Resource with the name DeferredRendering/Shadows/RSMCaster_Spot already exists. in ResourceManager::add at /build/ogre/src/ogre/OgreMain/src/OgreResourceManager.cpp (line 150)
[Err] [main.cc:34] Ogre Error:ItemIdentityException: Resource with the name DeferredRendering/Shadows/RSMCaster_Spot already exists. in ResourceManager::add at /build/ogre/src/ogre/OgreMain/src/OgreResourceManager.cpp (line 150)

Building against an unsupported version of ogre-1.8 works, but I would like to avoid potential conflicts, especially since ("other") ros packages (rviz) work fine with ogre-1.10.

• Should gazebo 8.0.0 work with ogre-1.10?
• If not, does some other gazebo version/branch work with ogre-1.10? Is there some patch I could apply?

I was only able to find https://osrf-migration.github.io/gazebo-gh-pages/#!/osrf/gazebo/pull-requests/1384/merge-haptix-branch-with-default/diff, which makes it look like gazebo should work with ogre-1.10 since quite a while.

So is this actually an Arch Linux only issue?

[osrf-migration]

Original comment by Tim Rakowski (Bitbucket: Tim Rakowski).

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• Edited issue description

[osrf-migration]

Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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• set component to "rendering::ogre_gazebo"

I'll defer to @iche033

[osrf-migration]

Original comment by Ian Chen (Bitbucket: Ian Chen, GitHub: iche033).

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we've merged a few pull requests recently that address issues related to ogre 1.10. A couple are backported to gazebo8:

https://osrf-migration.github.io/gazebo-gh-pages/#!/osrf/gazebo/pull-requests/2721

https://osrf-migration.github.io/gazebo-gh-pages/#!/osrf/gazebo/pull-requests/2722

I don't think we've made a new gazebo8 release with those patches yet. The workaround for the problem described in this issue is to edit and delete the duplicate material in [install_prefix]/share/gazebo-8/media/materials/scripts/ShadowCaster.material, see changes in pull request #2721

[osrf-migration]

Original comment by Tim Rakowski (Bitbucket: Tim Rakowski).

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Thanks a lot, worked like a charm. I noticed, though, that the client does not shutdown cleanly. gazebo returns -1 and gdb gzclient revealed a segfault in Ogre::Root::shutdown. The same does not happen with ogre 1.8 on Arch Linux. Not sure if I have enough time to (learn enough about gazebo and) debug that issue, since I am not even a gazebo user :/

Thank you very much for the fast help!

[osrf-migration]

Original comment by Tim Rakowski (Bitbucket: Tim Rakowski).

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• changed state from "new" to "closed"