timoore
40fe078021
This allows different OpenGL features (point sprites, point attenuation) to be used depending on hardware support.
74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
// Copyright (C) 2008 Timothy Moore timoore@redhat.com
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#include <osg/StateSet>
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#include "EffectCullVisitor.hxx"
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#include "EffectGeode.hxx"
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#include "Effect.hxx"
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#include "Technique.hxx"
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namespace simgear
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{
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using osgUtil::CullVisitor;
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EffectCullVisitor::EffectCullVisitor()
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{
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}
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EffectCullVisitor::EffectCullVisitor(const EffectCullVisitor& rhs) :
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CullVisitor(rhs)
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{
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}
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CullVisitor* EffectCullVisitor::clone() const
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{
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return new EffectCullVisitor(*this);
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}
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void EffectCullVisitor::apply(osg::Geode& node)
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{
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if (isCulled(node))
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return;
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EffectGeode *eg = dynamic_cast<EffectGeode*>(&node);
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if (!eg) {
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CullVisitor::apply(node);
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return;
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}
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Technique* technique = eg->getEffect()->chooseTechnique(&getRenderInfo());
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if (!technique) {
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CullVisitor::apply(node);
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return;
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}
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// push the node's state.
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osg::StateSet* node_state = node.getStateSet();
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if (node_state)
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pushStateSet(node_state);
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for (EffectGeode::DrawablesIterator beginItr = eg->drawablesBegin(),
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e = eg->drawablesEnd();
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beginItr != e;
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beginItr = technique->processDrawables(beginItr, e, this,
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eg->isCullingActive()))
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;
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// pop the node's state off the geostate stack.
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if (node_state)
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popStateSet();
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}
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}
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