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95 lines
2.7 KiB
95 lines
2.7 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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#ifndef OSG_TEXENV |
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#define OSG_TEXENV 1 |
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#include <osg/GL> |
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#include <osg/StateAttribute> |
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#include <osg/Vec4> |
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#ifndef OSG_GL_FIXED_FUNCTION_AVAILABLE |
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#define GL_MODULATE 0x2100 |
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#define GL_ADD 0x0104 |
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#define GL_MODULATE 0x2100 |
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#define GL_DECAL 0x2101 |
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#endif |
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namespace osg { |
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/** TexEnv encapsulates the OpenGL glTexEnv (texture environment) state. |
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*/ |
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class OSG_EXPORT TexEnv : public StateAttribute |
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{ |
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public : |
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enum Mode { |
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DECAL = GL_DECAL, |
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MODULATE = GL_MODULATE, |
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BLEND = GL_BLEND, |
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REPLACE = GL_REPLACE, |
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ADD = GL_ADD |
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}; |
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TexEnv(Mode mode=MODULATE); |
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */ |
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TexEnv(const TexEnv& texenv,const CopyOp& copyop=CopyOp::SHALLOW_COPY): |
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StateAttribute(texenv,copyop), |
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_mode(texenv._mode), |
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_color(texenv._color) {} |
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META_StateAttribute(osg, TexEnv, TEXENV); |
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virtual bool isTextureAttribute() const { return true; } |
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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(TexEnv,sa) |
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// Compare each parameter in turn against the rhs. |
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COMPARE_StateAttribute_Parameter(_mode) |
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COMPARE_StateAttribute_Parameter(_color) |
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return 0; // Passed all the above comparison macros, so must be equal. |
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} |
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void setMode( Mode mode ) { _mode = mode; } |
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Mode getMode() const { return _mode; } |
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void setColor( const Vec4& color ) { _color = color; } |
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Vec4& getColor() { return _color; } |
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const Vec4& getColor() const { return _color; } |
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virtual void apply(State& state) const; |
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protected : |
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virtual ~TexEnv( void ); |
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Mode _mode; |
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osg::Vec4 _color; |
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}; |
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} |
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#endif
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