60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 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_POINTSPRITE
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#define OSG_POINTSPRITE 1
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#include <osg/GL>
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#include <osg/StateAttribute>
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#ifndef GL_ARB_point_sprite
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#define GL_POINT_SPRITE_ARB 0x8861
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#define GL_COORD_REPLACE_ARB 0x8862
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#endif
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namespace osg {
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/** PointSprite base class which encapsulates enabling of point sprites .*/
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class OSG_EXPORT PointSprite : public osg::StateAttribute {
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public:
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PointSprite() {}
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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PointSprite(const PointSprite& texenv,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
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StateAttribute(texenv,copyop) {}
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META_StateAttribute(osg, PointSprite, POINTSPRITE);
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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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virtual bool getModeUsage(ModeUsage& usage) const
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{
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usage.usesMode(GL_POINT_SPRITE_ARB);
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return true;
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}
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virtual bool isTextureAttribute() const { return true; }
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virtual void apply(osg::State& state) const;
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protected:
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virtual ~PointSprite( void ) {}
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};
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}
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#endif
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