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75 lines
2.3 KiB
75 lines
2.3 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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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//osgFX - Copyright (C) 2003 Marco Jez |
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#ifndef OSGFX_VALIDATOR_ |
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#define OSGFX_VALIDATOR_ |
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#include <osgFX/Effect> |
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#include <osg/ref_ptr> |
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#include <osg/StateAttribute> |
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#include <vector> |
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namespace osgFX |
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{ |
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/** |
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This class is used internally by osgFX::Effect to choose between different |
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techniques dynamically. The apply() method will call each technique's |
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validate() method and store the results in a buffered array. The Effect |
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class will then choose the first technique that could be validated in all |
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active rendering contexts. |
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*/ |
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class OSGFX_EXPORT Validator: public osg::StateAttribute { |
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public: |
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Validator(); |
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Validator(Effect* effect); |
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Validator(const Validator& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY); |
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META_StateAttribute(osgFX, Validator, VALIDATOR); |
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void apply(osg::State& state) const; |
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void compileGLObjects(osg::State& state) const; |
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inline int compare(const osg::StateAttribute& sa) const; |
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inline void disable() { _effect = 0; } |
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protected: |
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virtual ~Validator() {} |
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Validator& operator=(const Validator&) { return *this; } |
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private: |
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mutable Effect* _effect; |
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}; |
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// INLINE METHODS |
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inline int Validator::compare(const osg::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(Validator,sa) |
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// compare parameters |
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COMPARE_StateAttribute_Parameter(_effect) |
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return 0; |
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} |
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} |
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#endif
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