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inside the osg::Image::ensureValidSizeForTexturing() method. The smallest of GL_MAX_TEXTURE_SIZE and OSG_MAX_TEXTURE_SIZE is used for the final max texture size. This new env. var. allows users to deliberate cap the size of their textures so they can test whether their models are limited by texture memory. If reducing the max texture size increases performance then you are limited by texture memory!
Welcome to the OpenSceneGraph (OSG). For information on the project, this distribtion, how to compile and run libraries and demos, and for documention see open up index.html in your perfered html browser. Robert Osfield. robert@openscenegraph.com April 2002.