Hi, Phil, I have a small sample with single threaded osgViewer that might help you: https://github.com/OGStudio/openscenegraph-cross-platform-guide/tree/master/1.10.SampleWeb OSG sources host the same Emscripten sample. Though, compile time flags might need just a bit of tweaking (see openscenegraph-cross-platform-guide open issues).
Regards, Michael. On Tue, 31 Mar 2020 at 02:35, OpenSceneGraph Users <osg-users@lists.openscenegraph.org> wrote: > > The issue is actually before anything runs, it’s link-time errors (in this > case, linking the compiled WebAssembly). OpenThreads uses the standard > FindThreads.cmake module, which in the case of WebAssembly still finds the > pthreads headers, but at link time no pthreads libraru is available so the > pthreads symbols can’t be resolved. > > I don’t recall if I mentioned earlier, but the multi-threaded version works > just fine in multi-threaded WebAssembly. This depends on SharedArrayBuffer > support in Javascript, which has been disabled in many browsers to mitigate > spectre-style attacks. So I’m trying to support the single-threaded case as > well to support those browsers. This is primarily on mobile platforms. > > I guess to build a usable single-threaded version, what is needed is a patch > to OpenThreads to ignore all pthreads headers, and effectively stub-out some > of the methods. In single-threaded WebAssembly there are apparently still > gcc-style internals available for atomics, so it wouldn’t be necessary to > create new code for all stubs. > > Kind regards, > Phil. > > > On 30/03/2020, at 10:22 PM, OpenSceneGraph Users > > <osg-users@lists.openscenegraph.org> wrote: > > > > Hi, Phil, > > > > when you run single threaded osgViewer, you have single thread. Which > > browsers don't like that and why? > > > > Regards, > > Michael. > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
