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31 lines
619 B
C++
31 lines
619 B
C++
#include "fog.hpp"
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#include <osg/Matrix>
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#include <osg/State>
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namespace NifOsg
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{
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Fog::Fog()
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: osg::Fog()
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{
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}
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Fog::Fog(const Fog& copy, const osg::CopyOp& copyop)
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: osg::Fog(copy, copyop)
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, mDepth(copy.mDepth)
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{
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}
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void Fog::apply(osg::State& state) const
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{
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osg::Fog::apply(state);
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#ifdef OSG_GL_FIXED_FUNCTION_AVAILABLE
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float fov, aspect, near, far;
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state.getProjectionMatrix().getPerspective(fov, aspect, near, far);
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glFogf(GL_FOG_START, near * mDepth + far * (1.f - mDepth));
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glFogf(GL_FOG_END, far);
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#endif
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}
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}
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