OpenSceneGraph 2.8 with OpenGL draw instanced extension support and improved COLLADA support

OpenSceneGraph 2.8, written entirely in Standard C++ and built upon OpenGL, has been released. OpenSceneGraph is the industry's leading open-source scene graph technology, designed to accelerate application development and improve 3D graphics performance. Along with many updates this version sees OpenGL "draw instanced" extension support and improved COLLADA support.