54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 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/ViewportIndexed>
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#include <osg/GLExtensions>
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#include <osg/State>
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using namespace osg;
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ViewportIndexed::ViewportIndexed():
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_index(0)
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{
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}
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ViewportIndexed::~ViewportIndexed()
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{
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}
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void ViewportIndexed::setIndex(unsigned int index)
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{
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if (_index==index) return;
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ReassignToParents needToReassingToParentsWhenMemberValueChanges(this);
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_index = index;
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}
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void ViewportIndexed::apply(State& state) const
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{
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const GLExtensions* extensions = state.get<GLExtensions>();
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if (extensions->glViewportIndexedf)
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{
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extensions->glViewportIndexedf(static_cast<GLuint>(_index),
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static_cast<GLfloat>(_x),
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static_cast<GLfloat>(_y),
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static_cast<GLfloat>(_width),
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static_cast<GLfloat>(_height));
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}
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else
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{
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OSG_WARN<<"Warning: ViewportIndexed::apply(..) failed, glViewportIndexed is not support by OpenGL driver."<<std::endl;
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}
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}
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