fe6238d126
implementations being registered at the same time. One usage case for this functionality to support usage of Wayland and X11 in the same version of the osgViewer. As part of the new functionality there is now a osg::GraphicsContext::Traits::windowingSystemPreferrence string that default to empty, but if defined will ensure that a specific WindowingSystemInterface is utilized when you do a generic call like osg::createGraphicsContext(). Also implemented is standard proxy object for registering the new contexts and removing them automatically, and declaration of standard graphicswindow_name() C entry point to help with static build linking.
110 lines
4.0 KiB
C++
110 lines
4.0 KiB
C++
/* OpenSceneGraph example, osgwindows.
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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 <osgDB/ReadFile>
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#include <osgUtil/Optimizer>
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#include <osgViewer/Viewer>
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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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// read the scene from the list of file specified commandline args.
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osg::ref_ptr<osg::Node> loadedModel = 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 (!loadedModel) loadedModel = osgDB::readRefNodeFile("cow.osgt");
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// if no model has been successfully loaded report failure.
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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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// construct the viewer.
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osgViewer::Viewer viewer;
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int xoffset = 40;
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int yoffset = 40;
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// left window + left slave camera
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{
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
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traits->x = xoffset + 0;
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traits->y = yoffset + 0;
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traits->width = 600;
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traits->height = 480;
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traits->windowDecoration = true;
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traits->doubleBuffer = true;
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traits->sharedContext = 0;
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osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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// add this slave camera to the viewer, with a shift left of the projection matrix
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viewer.addSlave(camera.get(), osg::Matrixd::translate(1.0,0.0,0.0), osg::Matrixd());
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}
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// right window + right slave camera
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{
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = new osg::GraphicsContext::Traits;
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traits->x = xoffset + 600;
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traits->y = yoffset + 0;
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traits->width = 600;
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traits->height = 480;
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traits->windowDecoration = true;
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traits->doubleBuffer = true;
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traits->sharedContext = 0;
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osg::ref_ptr<osg::GraphicsContext> gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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camera->setGraphicsContext(gc.get());
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camera->setViewport(new osg::Viewport(0,0, traits->width, traits->height));
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GLenum buffer = traits->doubleBuffer ? GL_BACK : GL_FRONT;
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camera->setDrawBuffer(buffer);
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camera->setReadBuffer(buffer);
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// add this slave camera to the viewer, with a shift right of the projection matrix
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viewer.addSlave(camera.get(), osg::Matrixd::translate(-1.0,0.0,0.0), osg::Matrixd());
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}
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// optimize the scene graph, remove redundant nodes and state etc.
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osgUtil::Optimizer optimizer;
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optimizer.optimize(loadedModel);
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// set the scene to render
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viewer.setSceneData(loadedModel);
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return viewer.run();
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}
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