63 lines
2.4 KiB
C++
63 lines
2.4 KiB
C++
#ifndef _VIRTUAL_PROGRAM__
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#define _VIRTUAL_PROGRAM__ 1
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#include<string>
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#include<map>
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#include<osg/Shader>
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#include<osg/Program>
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////////////////////////////////////////////////////////////////////////////////
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namespace osgCandidate {
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////////////////////////////////////////////////////////////////////////////////
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class VirtualProgram: public osg::Program
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{
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public:
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VirtualProgram( unsigned int mask = 0xFFFFFFFFUL );
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virtual ~VirtualProgram( void );
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VirtualProgram( const VirtualProgram& VirtualProgram,
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const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY );
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META_StateAttribute( osgCandidate, VirtualProgram, Type( PROGRAM ) )
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/** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/
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virtual int compare(const StateAttribute& sa) const
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{
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// check the types are equal and then create the rhs variable
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// used by the COMPARE_StateAttribute_Parameter macros below.
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COMPARE_StateAttribute_Types(VirtualProgram,sa)
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// compare each parameter in turn against the rhs.
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COMPARE_StateAttribute_Parameter(_mask)
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COMPARE_StateAttribute_Parameter(_shaderMap)
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return 0; // passed all the above comparison macros, must be equal.
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}
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/** If enabled, activate our program in the GL pipeline,
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* performing any rebuild operations that might be pending. */
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virtual void apply(osg::State& state) const;
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osg::Shader* getShader ( const std::string & shaderSemantic,
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osg::Shader::Type type );
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osg::Shader* setShader ( const std::string & shaderSemantic,
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osg::Shader * shader );
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protected:
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typedef std::vector< osg::ref_ptr< osg::Shader > > ShaderList;
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typedef std::pair< std::string, osg::Shader::Type > ShaderSemantic;
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typedef std::map< ShaderSemantic, osg::ref_ptr<osg::Shader> > ShaderMap;
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typedef std::map< ShaderList, osg::ref_ptr<osg::Program> > ProgramMap;
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mutable ProgramMap _programMap;
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ShaderMap _shaderMap;
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unsigned int _mask;
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}; // class VirtualProgram
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////////////////////////////////////////////////////////////////////////////////
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} // namespace osgCandidate
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////////////////////////////////////////////////////////////////////////////////
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#endif
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