f0277df858
one to use the osg::TexMat to automatically scale non dimensional tex coordinats to the size of the last texture rectangle applied.
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
/* -*-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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#include <osg/GL>
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#include <osg/TexMat>
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#include <osg/Notify>
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#include <osg/TextureRectangle>
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using namespace osg;
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TexMat::TexMat():
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_scaleByTextureRectangleSize(false)
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{
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}
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TexMat::~TexMat()
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{
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}
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void TexMat::apply(State& state) const
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{
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glMatrixMode( GL_TEXTURE );
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glLoadMatrix(_matrix.ptr());
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if (_scaleByTextureRectangleSize)
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{
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const osg::TextureRectangle* tex = dynamic_cast<const osg::TextureRectangle*>(state.getLastAppliedTextureAttribute(state.getActiveTextureUnit(), osg::StateAttribute::TEXTURE));
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if (tex)
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{
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glScalef(tex->getTextureWidth(),tex->getTextureHeight(),1.0f);
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}
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}
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glMatrixMode( GL_MODELVIEW );
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}
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