Robert, I would like to make you aware of two thread-safety issues in osgText:
Font::getGlyph() is thread-safe, but it returns a shared Glyph object that also needs protection. Glyph::getOrCreateTextureInfo, getTextureInfo, and setTextureInfo can fail when creating Text objects from different threads. Font::getCachedStateSets() returns a container that can be modified by the Text::createStateSet() method. This container also needs mutex protection. Glenn Waldron
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