123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2010 Robert Osfield
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*
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* This application is open source and may be redistributed and/or modified
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* freely and without restriction, both in commercial and non commercial applications,
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* as long as this copyright notice is maintained.
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*
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* This application 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.
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*/
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#include <osgDB/ReadFile>
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#include <osgGA/StateSetManipulator>
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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#include <iostream>
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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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osgViewer::Viewer viewer(arguments);
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// add the state manipulator
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viewer.addEventHandler( new osgGA::StateSetManipulator(viewer.getCamera()->getOrCreateStateSet()) );
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// add the stats handler
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viewer.addEventHandler(new osgViewer::StatsHandler);
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osg::ref_ptr<osg::Program> program = new osg::Program;
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bool vertexShadersAssigned = false;
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std::string vertexShaderFilename;
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while(arguments.read("--vert", vertexShaderFilename))
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{
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osg::ref_ptr<osg::Shader> vertexShader = osgDB::readRefShaderFile(vertexShaderFilename);
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if (vertexShader)
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{
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vertexShadersAssigned = true;
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program->addShader(vertexShader);
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}
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else
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{
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OSG_NOTICE<<"Unable to load vertex shader file : "<<vertexShaderFilename<<std::endl;
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}
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}
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if (!vertexShadersAssigned)
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{
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vertexShaderFilename = "shaders/shaderpipeline.vert";
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osg::ref_ptr<osg::Shader> vertexShader = osgDB::readRefShaderFile(vertexShaderFilename);
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if (vertexShader)
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{
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vertexShadersAssigned = true;
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program->addShader(vertexShader);
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}
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else
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{
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OSG_NOTICE<<"Unable to load vertex shader file : "<<vertexShaderFilename<<std::endl;
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return 1;
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}
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}
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bool fragmentShadersAssigned = false;
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std::string fragmentShaderFilename;
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while(arguments.read("--frag", fragmentShaderFilename))
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{
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osg::ref_ptr<osg::Shader> fragmentShader = osgDB::readRefShaderFile(fragmentShaderFilename);
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if (fragmentShader)
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{
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fragmentShadersAssigned = true;
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program->addShader(fragmentShader);
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}
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else
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{
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OSG_NOTICE<<"Unable to load fragment shader file : "<<fragmentShaderFilename<<std::endl;
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}
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}
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if (!fragmentShadersAssigned)
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{
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fragmentShaderFilename = "shaders/shaderpipeline.frag";
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osg::ref_ptr<osg::Shader> fragmentShader = osgDB::readRefShaderFile(fragmentShaderFilename);
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if (fragmentShader)
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{
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fragmentShadersAssigned = true;
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program->addShader(fragmentShader);
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}
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else
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{
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OSG_NOTICE<<"Unable to load fragment shader file : "<<fragmentShaderFilename<<std::endl;
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return 1;
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}
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}
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// assign program to topmost StateSet
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viewer.getCamera()->getOrCreateStateSet()->setAttribute(program);
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// load the data
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osg::ref_ptr<osg::Node> loadedModel = osgDB::readRefNodeFiles(arguments);
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if (!loadedModel)
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{
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std::cout << arguments.getApplicationName() <<": No data loaded" << std::endl;
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return 1;
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}
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viewer.setSceneData(loadedModel);
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viewer.realize();
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return viewer.run();
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}
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