Hi Bruce,
On 19 December 2016 at 21:34, Bruce Clay <[email protected]> wrote:
> Robert:
> Just to be sure I pulled the latest git release and diffed it against the
> code I had and only found differences in commented headers. I built the code
> as I had previously and got the same errors. I am using the 32 bit version
> of 3rd party dependencies which is not the latest posted but only a 64 bit
> version of the latest dependencies is posted and I need a 32 bit app.
>
> I tried a couple of different things based on flags I saw in the cmake file.
>
> first I tried using the OSG_MULTIMONITOR_WIN32_NVIDIA_WORKAROUND flag. I
> rebuilt the entire package and ran osgViewer cessnafire.osg. In this
> configuration, the program sometime crashed immediately with no scene display
> and other times ran fine. It we still to unstable to leave in this
> configuration.
I've just looked at the history of GraphicsWindowWin32.cpp, the
OSG_MULTIMONITOR_WIN32_NVIDIA_WORKAROUND is a workaround for an NVidia
driver bug from 8 years ago, I'd hope that it's no longer relevant...
https://github.com/openscenegraph/OpenSceneGraph/commit/7c23951ee17ab444220220951dae16df7c691e2a
> next I turned off the flag set in the previous step and tried the
> BUILD_OPENTHREADS_WITH_QT flag and rebuilt the package. With this
> configuration, osgViewer never crashed but some of the other / larger apps
> still crashed. I can not name those that crashed or where they crashed at
> this moment because I am installing Visual Studio 2015 and the installer
> won't let me run any version of Visual Studio while it is doing a setup. It
> did still point towards a threading problem though. I can check tomorrow
> when the install is finished. Hope this sheds some light on the problem. I
> will try vs2015 tomorrow as well.
The effect of shifting the BUILD_OPENTHREADS_WITH_QT suggests a either
that the bug is timing sensitive or the OpenThreads::Win32 implement
is not protecting threads as it should be. It may be worth looking at
the differences between OSG-3.2 and 3.4 w.r.t OpenThreads, perhaps one
of the "fixes" has actually caused a regression.
Do you have any non NVidia or non Windows setups?
Robert
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