From Wand Rui, "I've rewritten the osgblenddrawbuffers example to use the new BlendFunci and Capability classes. Hope it will tell others how to make use of the new functionality and why they are important in modern MRT-based applications."


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14587 16af8721-9629-0410-8352-f15c8da7e697
Quietened down debug messages


git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14588 16af8721-9629-0410-8352-f15c8da7e697