1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 Robert Osfield
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version. The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * OpenSceneGraph Public License for more details.
14#ifndef OSGTERRAIN_DISPLACEMENTMAPPINGTECHNIQUE
15#define OSGTERRAIN_DISPLACEMENTMAPPINGTECHNIQUE
17#include <OpenThreads/Mutex>
18#include <osg/MatrixTransform>
20#include <osgTerrain/GeometryTechnique>
25class OSGTERRAIN_EXPORT DisplacementMappingTechnique : public osgTerrain::TerrainTechnique
29 DisplacementMappingTechnique();
31 DisplacementMappingTechnique(const DisplacementMappingTechnique&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
33 META_Object(osgTerrain, DisplacementMappingTechnique);
35 virtual void init(int dirtyMask, bool assumeMultiThreaded);
36 virtual void update(osgUtil::UpdateVisitor* uv);
37 virtual void cull(osgUtil::CullVisitor* cv);
38 virtual void traverse(osg::NodeVisitor& nv);
39 virtual void cleanSceneGraph();
40 virtual void releaseGLObjects(osg::State* state) const;
44 virtual ~DisplacementMappingTechnique();
46 mutable OpenThreads::Mutex _traversalMutex;
48 mutable OpenThreads::Mutex _transformMutex;
49 osg::ref_ptr<osg::MatrixTransform> _transform;
51 OpenThreads::Atomic _currentTraversalCount;