Previously the complete StateSet was cleared, even the non clipping releted
state attributes and modes in this stateset on a call to
setLocalSetateSetModes.
With this change only those modes/attributes are changed that need to be
changed. That is, if a clip plane is removed from the ClipNode, only this
assiciated mode is removed from the state set, instead of throwing away the
whole state set.
In this way we have less surprising results if the state set of a clip node is
used for more state than just the clip state.
"
It does not like that the prototype of ClipNode::setStateSetModes() differs
from implementation of that function in the constness of the second
parameter.
On SunOS it compiles fine, but I get link errors when the variant that is
declared in the header is referenced.
The attached src/osg/ClipNode.cpp file removes the const qualifier from the
implementation to match exactly the prototype in the header file.
The file is based on revision 7386 as of today.
"
