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78 lines
2.5 KiB
78 lines
2.5 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 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_BLENDFUNCI
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#define OSG_BLENDFUNCI 1
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#include <osg/BlendFunc>
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namespace osg {
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/** Encapsulates glBlendFunci function : the index version of glBlendEquation for multiple render target.
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*/
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class OSG_EXPORT BlendFunci : public BlendFunc
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{
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public :
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BlendFunci();
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BlendFunci(unsigned int buf, GLenum source, GLenum destination):
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BlendFunc(source, destination),
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_index(buf) {}
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BlendFunci(unsigned int buf, GLenum source, GLenum destination, GLenum source_alpha, GLenum destination_alpha):
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BlendFunc(source, destination, source_alpha, destination_alpha),
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_index(buf) {}
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */
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BlendFunci(const BlendFunci& cm,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
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BlendFunc(cm,copyop),
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_index(cm._index) {}
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META_StateAttribute(osg, BlendFunci, BLENDFUNC);
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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 for equal types, then create the rhs variable
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// used by the COMPARE_StateAttribute_Parameter macros below.
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COMPARE_StateAttribute_Types(BlendFunci,sa)
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COMPARE_StateAttribute_Parameter(_index);
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return BlendFunc::compare(sa);
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}
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/** Return the buffer index as the member identifier.*/
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virtual unsigned int getMember() const { return _index; }
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/** Set the renderbuffer index of the BlendFunci. */
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void setIndex(unsigned int buf);
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/** Get the renderbuffer index of the BlendFunci. */
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unsigned int getIndex() const { return _index; }
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virtual void apply(State& state) const;
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protected:
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virtual ~BlendFunci();
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unsigned int _index;
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};
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}
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#endif
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