TexEnvFilter
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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_TEXENVFILTER
#define OSG_TEXENVFILTER 1
#include <osg/GL>
#include <osg/StateAttribute>
#ifndef GL_EXT_texture_lod_bias
#define GL_MAX_TEXTURE_LOD_BIAS_EXT 0x84FD
#define GL_TEXTURE_FILTER_CONTROL_EXT 0x8500
#define GL_TEXTURE_LOD_BIAS_EXT 0x8501
#endif
namespace osg {
class OSG_EXPORT TexEnvFilter : public StateAttribute
{
public:
TexEnvFilter(float lodBias = 0.0f);
TexEnvFilter(const TexEnvFilter& texenv,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
StateAttribute(texenv,copyop),
_lodBias(texenv._lodBias) {}
META_StateAttribute(osg, TexEnvFilter, TEXENVFILTER);
virtual bool isTextureAttribute() const { return true; }
virtual int compare(const StateAttribute& sa) const
{
// check the types are equal and then create the rhs variable
// used by the COMPARE_StateAttribute_Parameter macros below.
COMPARE_StateAttribute_Types(TexEnvFilter, sa)
// compare each parameter in turn against the rhs.
COMPARE_StateAttribute_Parameter(_lodBias)
return 0; // passed all the above comparison macros, must be equal.
}
void setLodBias( float lodBias ) { _lodBias = lodBias; }
float getLodBias() const { return _lodBias; }
virtual void apply(State& state) const;
protected:
virtual ~TexEnvFilter();
float _lodBias;
};
}
#endif
StateAttribute
COMPARE_StateAttribute_Parameter
#define COMPARE_StateAttribute_Parameter(parameter)
Definition StateAttribute:69
COMPARE_StateAttribute_Types
#define COMPARE_StateAttribute_Types(TYPE, rhs_attribute)
Definition StateAttribute:57
osg::CopyOp
Definition CopyOp:41
osg::CopyOp::SHALLOW_COPY
@ SHALLOW_COPY
Definition CopyOp:47
osg::StateAttribute::StateAttribute
StateAttribute()
osg::StateAttribute::TEXENVFILTER
@ TEXENVFILTER
Definition StateAttribute:145
osg::State
Definition State:80
osg::TexEnvFilter::isTextureAttribute
virtual bool isTextureAttribute() const
Definition TexEnvFilter:41
osg::TexEnvFilter::compare
virtual int compare(const StateAttribute &sa) const
Definition TexEnvFilter:44
osg::TexEnvFilter::TexEnvFilter
TexEnvFilter(const TexEnvFilter &texenv, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
Definition TexEnvFilter:35
osg::TexEnvFilter::setLodBias
void setLodBias(float lodBias)
Definition TexEnvFilter:56
osg::TexEnvFilter::apply
virtual void apply(State &state) const
osg::TexEnvFilter::getLodBias
float getLodBias() const
Definition TexEnvFilter:58
osg::TexEnvFilter::META_StateAttribute
META_StateAttribute(osg, TexEnvFilter, TEXENVFILTER)
osg::TexEnvFilter::_lodBias
float _lodBias
Definition TexEnvFilter:65
osg::TexEnvFilter::TexEnvFilter
TexEnvFilter(float lodBias=0.0f)
osg::TexEnvFilter::~TexEnvFilter
virtual ~TexEnvFilter()
osg
Definition AlphaFunc:19
OSG_EXPORT
#define OSG_EXPORT
Definition osg/Export:39