96 lines
3.2 KiB
Plaintext
96 lines
3.2 KiB
Plaintext
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/* -*-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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#ifndef OSG_SAMPLEMASKI
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#define OSG_SAMPLEMASKI 1
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#include <osg/StateAttribute>
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namespace osg {
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/**
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* osg::SampleMaski does nothing if OpenGL 3.2 or ARB_texture_multisample are not available.
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*/
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class OSG_EXPORT SampleMaski : public StateAttribute
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{
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public :
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SampleMaski();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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SampleMaski(const SampleMaski& sampleMaski,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
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META_StateAttribute(osg, SampleMaski, SAMPLEMASKI)
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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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inline void setMask(unsigned int mask, unsigned int maskNumber = 0u ) { _sampleMask[maskNumber] = mask; }
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inline unsigned int getMask(unsigned int maskNumber = 0u) const { return _sampleMask[maskNumber]; }
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virtual void apply(State& state) const;
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public:
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/** Extensions class which encapsulates the querying of extensions and
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* associated function pointers, and provide convenience wrappers to
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* check for the extensions or use the associated functions.
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*/
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class OSG_EXPORT Extensions : public osg::Referenced
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{
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public:
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Extensions(unsigned int contextID);
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Extensions(const Extensions& rhs);
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void lowestCommonDenominator(const Extensions& rhs);
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void setupGLExtensions(unsigned int contextID);
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bool isOpenGL32upported() const { return _isOpenGL32upported; }
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bool isTextureMultisampleSupported() const { return _isTextureMultisampleSupported; }
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bool isSampleMaskiSupported() const { return _isSampleMaskiSupported; }
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void glSampleMaski(GLuint maskNumber, GLbitfield mask) const;
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protected:
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~Extensions() {}
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bool _isOpenGL32upported;
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bool _isTextureMultisampleSupported;
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bool _isSampleMaskiSupported;
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typedef void (GL_APIENTRY * SampleMaski) ( GLuint maskNumber, GLbitfield mask );
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SampleMaski _glSampleMaski;
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};
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static Extensions* getExtensions(unsigned int contextID,bool createIfNotInitalized);
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static void setExtensions(unsigned int contextID,Extensions* extensions);
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protected:
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virtual ~SampleMaski();
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//For now support only up to 64 bit mask;
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unsigned int _sampleMask[2];
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};
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}
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#endif
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