Check that saving compiled shaders to the cache is supported before enabling the option to save to the cache.
Check that saving compiled shaders to the cache is supported before enabling the option to save to the cache.

--HG--
branch : v1-9

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