[GL] In some situations the GL context may be changed by external APIs. Before rendering make sure that ours is the currently selected context.
[GL] In some situations the GL context may be changed by external APIs. Before rendering make sure that ours is the currently selected context.

--HG--
branch : v1-9

digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre