85 lines
2.3 KiB
Plaintext
85 lines
2.3 KiB
Plaintext
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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/**
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* \brief Shader generator framework.
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* \author Maciej Krol
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*/
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#ifndef OSGUTIL_SHADER_STATE_
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#define OSGUTIL_SHADER_STATE_ 1
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#include <osgUtil/Export>
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#include <osg/NodeVisitor>
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#include <osg/State>
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namespace osgUtil
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{
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class OSGUTIL_EXPORT ShaderGenCache : public osg::Referenced
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{
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public:
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enum StateMask
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{
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BLEND = 1,
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LIGHTING = 2,
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FOG = 4,
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DIFFUSE_MAP = 8, //< Texture in unit 0
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NORMAL_MAP = 16 //< Texture in unit 1 and vertex attribute array 6
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};
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typedef std::map<unsigned int, osg::ref_ptr<osg::StateSet> > StateSetMap;
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ShaderGenCache() {};
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void setStateSet(unsigned int stateMask, osg::StateSet *program);
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osg::StateSet *getStateSet(unsigned int stateMask) const;
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osg::StateSet *getOrCreateStateSet(unsigned int stateMask);
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protected:
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osg::StateSet *createStateSet(unsigned int stateMask) const;
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mutable OpenThreads::Mutex _mutex;
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StateSetMap _stateSetMap;
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};
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class OSGUTIL_EXPORT ShaderGenVisitor : public osg::NodeVisitor
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{
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public:
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ShaderGenVisitor();
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ShaderGenVisitor(ShaderGenCache *stateCache);
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void setStateCache(ShaderGenCache *stateCache) { _stateCache = stateCache; }
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ShaderGenCache *getStateCache() const { return _stateCache.get(); }
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/// Top level state set applied as the first one.
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void setRootStateSet(osg::StateSet *stateSet);
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osg::StateSet *getRootStateSet() const { return _rootStateSet.get(); }
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void apply(osg::Node &node);
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void apply(osg::Geode &geode);
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void reset();
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protected:
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void update(osg::Drawable *drawable);
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osg::ref_ptr<ShaderGenCache> _stateCache;
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osg::ref_ptr<osg::State> _state;
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osg::ref_ptr<osg::StateSet> _rootStateSet;
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};
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}
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#endif
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