138 lines
4.3 KiB
C++
138 lines
4.3 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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#ifndef OSGUTIL_GLOBJECTSVISITOR
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#define OSGUTIL_GLOBJECTSVISITOR 1
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#include <OpenThreads/Mutex>
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#include <osg/NodeVisitor>
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#include <osg/Geode>
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#include <osg/State>
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#include <osgUtil/Export>
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namespace osgUtil {
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/** Visitor for traversing scene graph and setting each osg::Drawable's _useDisplayList flag,
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* with option to immediately compile osg::Drawable OpenGL Display lists and
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* osg::StateAttribute's.
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*/
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class OSGUTIL_EXPORT GLObjectsVisitor : public osg::NodeVisitor
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{
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public:
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/** Operation modes of the.*/
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enum ModeValues
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{
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SWITCH_ON_DISPLAY_LISTS = 0x1,
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SWITCH_OFF_DISPLAY_LISTS = 0x2,
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COMPILE_DISPLAY_LISTS = 0x4,
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COMPILE_STATE_ATTRIBUTES = 0x8,
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RELEASE_DISPLAY_LISTS = 0x10,
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RELEASE_STATE_ATTRIBUTES = 0x20,
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SWITCH_ON_VERTEX_BUFFER_OBJECTS = 0x40,
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SWITCH_OFF_VERTEX_BUFFER_OBJECTS = 0x80,
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CHECK_BLACK_LISTED_MODES = 0x100
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};
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typedef unsigned int Mode;
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/** Construct a GLObjectsVisitor to traverse all children, operating on
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* node according to specified mode, such as to compile or release
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* display list/texture objects etc. Default mode is to compile
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* GL objects.
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*/
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GLObjectsVisitor(Mode mode=COMPILE_DISPLAY_LISTS|COMPILE_STATE_ATTRIBUTES|CHECK_BLACK_LISTED_MODES);
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META_NodeVisitor("osg","GLObjectsVisitor")
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virtual void reset()
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{
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_drawablesAppliedSet.clear();
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_stateSetAppliedSet.clear();
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}
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/** Set the operational mode of what operations to do on the scene graph.*/
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void setMode(Mode mode) { _mode = mode; }
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/** Get the operational mode.*/
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Mode getMode() const { return _mode; }
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/** Set the State to use during traversal. */
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void setState(osg::State* state)
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{
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_renderInfo.setState(state);
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}
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osg::State* getState()
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{
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return _renderInfo.getState();
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}
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void setRenderInfo(osg::RenderInfo& renderInfo)
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{
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_renderInfo = renderInfo;
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}
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osg::RenderInfo& getRenderInfo()
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{
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return _renderInfo;
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}
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/** Simply traverse using standard NodeVisitor traverse method.*/
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virtual void apply(osg::Node& node);
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/** For each Geode visited set the display list usage according to the
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* _displayListMode.
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*/
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virtual void apply(osg::Geode& node);
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void apply(osg::Drawable& drawable);
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void apply(osg::StateSet& stateset);
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protected:
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typedef std::set<osg::Drawable*> DrawableAppliedSet;
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typedef std::set<osg::StateSet*> StatesSetAppliedSet;
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Mode _mode;
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osg::RenderInfo _renderInfo;
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DrawableAppliedSet _drawablesAppliedSet;
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StatesSetAppliedSet _stateSetAppliedSet;
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osg::ref_ptr<osg::Program> _lastCompiledProgram;
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};
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class OSGUTIL_EXPORT GLObjectsOperation : public osg::GraphicsOperation
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{
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public:
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GLObjectsOperation(GLObjectsVisitor::Mode mode = GLObjectsVisitor::COMPILE_DISPLAY_LISTS|GLObjectsVisitor::COMPILE_STATE_ATTRIBUTES|GLObjectsVisitor::CHECK_BLACK_LISTED_MODES);
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GLObjectsOperation(osg::Node* subgraph, GLObjectsVisitor::Mode mode = GLObjectsVisitor::COMPILE_DISPLAY_LISTS|GLObjectsVisitor::COMPILE_STATE_ATTRIBUTES|GLObjectsVisitor::CHECK_BLACK_LISTED_MODES);
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virtual void operator () (osg::GraphicsContext* context);
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protected:
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osg::ref_ptr<osg::Node> _subgraph;
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GLObjectsVisitor::Mode _mode;
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};
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}
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#endif
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