dd996a3289
forcing users to use osgDB::readRef*File() methods. The later is preferable as it closes a potential threading bug when using paging databases in conjunction
with the osgDB::Registry Object Cache. This threading bug occurs when one thread gets an object from the Cache via an osgDB::read*File() call where only
a pointer to the object is passed back, so taking a reference to the object is delayed till it gets reassigned to a ref_ptr<>, but at the same time another
thread calls a flush of the Object Cache deleting this object as it's referenceCount is now zero. Using osgDB::readREf*File() makes sure the a ref_ptr<> is
passed back and the referenceCount never goes to zero.
To ensure the OSG builds when OSG_PROVIDE_READFILE is to OFF the many cases of osgDB::read*File() usage had to be replaced with a ref_ptr<> osgDB::readRef*File()
usage. The avoid this change causing lots of other client code to be rewritten to handle the use of ref_ptr<> in place of C pointer I introduced a serious of
templte methods in various class to adapt ref_ptr<> to the underly C pointer to be passed to old OSG API's, example of this is found in include/osg/Group:
bool addChild(Node* child); // old method which can only be used with a Node*
tempalte<class T> bool addChild(const osg::ref_ptr<T>& child) { return addChild(child.get()); } // adapter template method
These changes together cover 149 modified files, so it's a large submission. This extent of changes are warrent to make use of the Object Cache
and multi-threaded loaded more robust.
git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@15164 16af8721-9629-0410-8352-f15c8da7e697
124 lines
4.9 KiB
C++
124 lines
4.9 KiB
C++
/* OpenSceneGraph example, osgcubemap.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <osg/Group>
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#include <osg/StateSet>
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#include <osg/TextureCubeMap>
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#include <osg/TexGen>
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#include <osg/TexEnvCombine>
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#include <osgUtil/ReflectionMapGenerator>
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#include <osgUtil/HighlightMapGenerator>
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#include <osgUtil/HalfWayMapGenerator>
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#include <osgUtil/Optimizer>
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#include <osgDB/ReadFile>
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#include <osgDB/Registry>
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#include <osgGA/TrackballManipulator>
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#include <osgGA/FlightManipulator>
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#include <osgGA/DriveManipulator>
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#include <osgViewer/Viewer>
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#include <iostream>
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#include <string>
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#include <vector>
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void create_specular_highlights(osg::Node *node)
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{
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osg::StateSet *ss = node->getOrCreateStateSet();
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// create and setup the texture object
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osg::TextureCubeMap *tcm = new osg::TextureCubeMap;
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tcm->setWrap(osg::Texture::WRAP_S, osg::Texture::CLAMP);
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tcm->setWrap(osg::Texture::WRAP_T, osg::Texture::CLAMP);
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tcm->setWrap(osg::Texture::WRAP_R, osg::Texture::CLAMP);
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tcm->setFilter(osg::Texture::MIN_FILTER, osg::Texture::LINEAR_MIPMAP_LINEAR);
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tcm->setFilter(osg::Texture::MAG_FILTER, osg::Texture::LINEAR);
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// generate the six highlight map images (light direction = [1, 1, -1])
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osgUtil::HighlightMapGenerator *mapgen = new osgUtil::HighlightMapGenerator(
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osg::Vec3(1, 1, -1), // light direction
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osg::Vec4(1, 0.9f, 0.8f, 1), // light color
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8); // specular exponent
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mapgen->generateMap();
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// assign the six images to the texture object
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tcm->setImage(osg::TextureCubeMap::POSITIVE_X, mapgen->getImage(osg::TextureCubeMap::POSITIVE_X));
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tcm->setImage(osg::TextureCubeMap::NEGATIVE_X, mapgen->getImage(osg::TextureCubeMap::NEGATIVE_X));
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tcm->setImage(osg::TextureCubeMap::POSITIVE_Y, mapgen->getImage(osg::TextureCubeMap::POSITIVE_Y));
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tcm->setImage(osg::TextureCubeMap::NEGATIVE_Y, mapgen->getImage(osg::TextureCubeMap::NEGATIVE_Y));
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tcm->setImage(osg::TextureCubeMap::POSITIVE_Z, mapgen->getImage(osg::TextureCubeMap::POSITIVE_Z));
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tcm->setImage(osg::TextureCubeMap::NEGATIVE_Z, mapgen->getImage(osg::TextureCubeMap::NEGATIVE_Z));
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// enable texturing, replacing any textures in the subgraphs
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ss->setTextureAttributeAndModes(0, tcm, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
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// texture coordinate generation
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osg::TexGen *tg = new osg::TexGen;
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tg->setMode(osg::TexGen::REFLECTION_MAP);
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ss->setTextureAttributeAndModes(0, tg, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
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// use TexEnvCombine to add the highlights to the original lighting
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osg::TexEnvCombine *te = new osg::TexEnvCombine;
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te->setCombine_RGB(osg::TexEnvCombine::ADD);
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te->setSource0_RGB(osg::TexEnvCombine::TEXTURE);
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te->setOperand0_RGB(osg::TexEnvCombine::SRC_COLOR);
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te->setSource1_RGB(osg::TexEnvCombine::PRIMARY_COLOR);
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te->setOperand1_RGB(osg::TexEnvCombine::SRC_COLOR);
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ss->setTextureAttributeAndModes(0, te, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON);
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}
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int main(int argc, char *argv[])
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{
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// use an ArgumentParser object to manage the program arguments.
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osg::ArgumentParser arguments(&argc,argv);
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// construct the viewer.
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osgViewer::Viewer viewer;
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// load the nodes from the commandline arguments.
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osg::ref_ptr<osg::Node> rootnode = osgDB::readRefNodeFiles(arguments);
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// if not loaded assume no arguments passed in, try use default mode instead.
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if (!rootnode) rootnode = osgDB::readRefNodeFile("cessna.osgt");
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if (!rootnode)
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{
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osg::notify(osg::NOTICE)<<"Please specify a model filename on the command line."<<std::endl;
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return 1;
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}
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// create specular highlights
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create_specular_highlights(rootnode.get());
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// run optimization over the scene graph
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osgUtil::Optimizer optimzer;
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optimzer.optimize(rootnode);
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// add a viewport to the viewer and attach the scene graph.
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viewer.setSceneData(rootnode);
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// create the windows and run the threads.
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viewer.realize();
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return viewer.run();
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}
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