Multiview shaders.
Refactor Frustum management
Rewrite shared shadow map
cull mask should respect stereo
Stereo savegame screencap
LocalMap refactoring
use the vertex buffer hint instead of the display list patch to enable/disable display lists
Character preview fixes
This PR removes dummy serialisers for `StateSetUpdater`, `NodeCallback` and the respective `META` macros that trigger serialisation requirement here.
`StateSetUpdater` and `NodeCallback` are just base classes that can not be used on their own, so there is no need to incorporate them into serialisation. These changes might have minor effects on derived classes that forget to override `className()`, `libraryName()` through `META`, but it makes hardly a difference to now serialise such classes as a dysfunctional `osg::Callback` instead of a dysfunctional `SceneUtil::NodeCallback`.
(cherry picked from commit 496b3aef88b8fd867dcdd23a6ca43144573b1b2f)
Stereo friendly water
(cherry picked from commit 0e22c55e48a7f965367d3d430c1bef5357b22748)
Option to disable per view mapping.
Include memory header
De-hardcode settings and buffers.
formatting error
Update water.cpp (whitespace)
Update water.cpp (more whitespace)
include render order
c array -> c++ array
