Hello,
I have been experiencing a crash when opening multiple OSG windows at
the same time on Windows. It is quite difficult to reproduce, but the
end result is that the glyphsWereSubloading reference in
GlyphTexture::apply() ends up pointing to a memory location that
consists of 0xdd repeated. On MSVC debug builds, this usually indicates
memory that was recently deleted. The _glyphsToSubload member has
reasonable values (and a different memory location) when the problem
occurs. Somehow, the reference and the member become out of sync,
presumably due to some sort of threading problem.
I have not determined exactly what the problem is, but two things that I
suspect are:
1. _glyphsToSubload is read outside of the lock in a number of locations
in GlyphTexture::apply().
2. _glyphsToSubload is written outside of a lock in
GlyphTexture::resizeGLObjectBuffers().
Anyone have any suggestions?
I am running OSG 3.2.0 on Windows 8.1, with OSG compiled from source
using MSVC 10. The viewers are running in single threaded mode, but each
viewer is running on its own thread.
Thanks,
Judson
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