300 lines
11 KiB
C++
300 lines
11 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 <osgUtil/Optimizer>
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#include <osg/CoordinateSystemNode>
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#include <osg/Switch>
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#include <osgText/Text>
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#include <osgViewer/Viewer>
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#include <osgViewer/ViewerEventHandlers>
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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 <osgGA/KeySwitchMatrixManipulator>
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#include <osgGA/StateSetManipulator>
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#include <osgGA/AnimationPathManipulator>
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#include <osgGA/TerrainManipulator>
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#include <osgGA/SphericalManipulator>
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#include <osgGA/Device>
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#include <iostream>
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#include <osg/GLExtensions>
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#ifndef GL_ARB_sync
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#define GL_MAX_SERVER_WAIT_TIMEOUT 0x9111
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#define GL_OBJECT_TYPE 0x9112
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#define GL_SYNC_CONDITION 0x9113
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#define GL_SYNC_STATUS 0x9114
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#define GL_SYNC_FLAGS 0x9115
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#define GL_SYNC_FENCE 0x9116
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#define GL_SYNC_GPU_COMMANDS_COMPLETE 0x9117
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#define GL_UNSIGNALED 0x9118
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#define GL_SIGNALED 0x9119
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#define GL_ALREADY_SIGNALED 0x911A
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#define GL_TIMEOUT_EXPIRED 0x911B
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#define GL_CONDITION_SATISFIED 0x911C
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#define GL_WAIT_FAILED 0x911D
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#define GL_SYNC_FLUSH_COMMANDS_BIT 0x00000001
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#define GL_TIMEOUT_IGNORED 0xFFFFFFFFFFFFFFFFull
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#endif
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class MySwapBuffersCallback : public osg::GraphicsContext::SwapCallback
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{
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public:
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MySwapBuffersCallback():
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_extensionInitialized(false),
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_glFenceSync(0),
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_glIsSync(0),
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_glDeleteSync(0),
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_glClientWaitSync(0),
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_glWaitSync(0),
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_glGetInteger64v(0),
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_glGetSynciv(0),
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_previousSync(0)
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{
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OSG_NOTICE<<"Created Swap callback."<<std::endl;
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}
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void setUpExtensions()
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{
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_extensionInitialized = true;
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osg::setGLExtensionFuncPtr(_glFenceSync, "glFenceSync");
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osg::setGLExtensionFuncPtr(_glIsSync, "glIsSync");
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osg::setGLExtensionFuncPtr(_glDeleteSync, "glDeleteSync");
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osg::setGLExtensionFuncPtr(_glClientWaitSync, "glClientWaitSync");
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osg::setGLExtensionFuncPtr(_glWaitSync, "glWaitSync");
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osg::setGLExtensionFuncPtr(_glGetInteger64v, "glGetInteger64v");
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osg::setGLExtensionFuncPtr(_glGetSynciv, "glGetSynciv");
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}
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virtual void swapBuffersImplementation(osg::GraphicsContext* gc)
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{
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// OSG_NOTICE<<"Before swap - place to do swap ready sync"<<std::endl;
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gc->swapBuffersImplementation();
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//glFinish();
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if (!_extensionInitialized) setUpExtensions();
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if (_glClientWaitSync)
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{
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if (_previousSync)
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{
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unsigned int num_seconds = 1;
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GLuint64 timeout = num_seconds * ((GLuint64)1000 * 1000 * 1000);
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_glClientWaitSync(_previousSync, 0, timeout);
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_glDeleteSync(_previousSync);
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}
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_previousSync = _glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
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}
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//gc->getState()->checkGLErrors("after glWaitSync");
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//OSG_NOTICE<<"After swap"<<std::endl;
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}
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#ifdef _WIN32
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typedef __int64 GLint64;
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typedef unsigned __int64 GLuint64;
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#else
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typedef int64_t GLint64;
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typedef uint64_t GLuint64;
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#endif
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typedef struct __GLsync *GLsync;
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typedef GLsync (GL_APIENTRY * PFNGLFENCESYNCPROC) (GLenum condition, GLbitfield flags);
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typedef GLboolean (GL_APIENTRY * PFNGLISSYNCPROC) (GLsync sync);
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typedef void (GL_APIENTRY * PFNGLDELETESYNCPROC) (GLsync sync);
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typedef GLenum (GL_APIENTRY * PFNGLCLIENTWAITSYNCPROC) (GLsync sync, GLbitfield flags, GLuint64 timeout);
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typedef void (GL_APIENTRY * PFNGLWAITSYNCPROC) (GLsync sync, GLbitfield flags, GLuint64 timeout);
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typedef void (GL_APIENTRY * PFNGLGETINTEGER64VPROC) (GLenum pname, GLint64 *params);
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typedef void (GL_APIENTRY * PFNGLGETSYNCIVPROC) (GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values);
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bool _extensionInitialized;
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PFNGLFENCESYNCPROC _glFenceSync;
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PFNGLISSYNCPROC _glIsSync;
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PFNGLDELETESYNCPROC _glDeleteSync;
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PFNGLCLIENTWAITSYNCPROC _glClientWaitSync;
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PFNGLWAITSYNCPROC _glWaitSync;
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PFNGLGETINTEGER64VPROC _glGetInteger64v;
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PFNGLGETSYNCIVPROC _glGetSynciv;
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GLsync _previousSync;
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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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arguments.getApplicationUsage()->setApplicationName(arguments.getApplicationName());
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arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the standard OpenSceneGraph example which loads and visualises 3d models.");
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arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
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arguments.getApplicationUsage()->addCommandLineOption("--image <filename>","Load an image and render it on a quad");
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arguments.getApplicationUsage()->addCommandLineOption("--dem <filename>","Load an image/DEM and render it on a HeightField");
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arguments.getApplicationUsage()->addCommandLineOption("--login <url> <username> <password>","Provide authentication information for http file access.");
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arguments.getApplicationUsage()->addCommandLineOption("--device <device-name>","add named device to the viewer");
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osgViewer::Viewer viewer(arguments);
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unsigned int helpType = 0;
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if ((helpType = arguments.readHelpType()))
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{
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arguments.getApplicationUsage()->write(std::cout, helpType);
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return 1;
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}
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// report any errors if they have occurred when parsing the program arguments.
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if (arguments.errors())
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{
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arguments.writeErrorMessages(std::cout);
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return 1;
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}
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if (arguments.argc()<=1)
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{
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arguments.getApplicationUsage()->write(std::cout,osg::ApplicationUsage::COMMAND_LINE_OPTION);
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return 1;
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}
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std::string url, username, password;
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while(arguments.read("--login",url, username, password))
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{
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if (!osgDB::Registry::instance()->getAuthenticationMap())
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{
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osgDB::Registry::instance()->setAuthenticationMap(new osgDB::AuthenticationMap);
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osgDB::Registry::instance()->getAuthenticationMap()->addAuthenticationDetails(
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url,
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new osgDB::AuthenticationDetails(username, password)
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);
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}
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}
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std::string device;
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while(arguments.read("--device", device))
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{
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osg::ref_ptr<osgGA::Device> dev = osgDB::readFile<osgGA::Device>(device);
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if (dev.valid())
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{
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viewer.addDevice(dev.get());
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}
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}
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// set up the camera manipulators.
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{
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osg::ref_ptr<osgGA::KeySwitchMatrixManipulator> keyswitchManipulator = new osgGA::KeySwitchMatrixManipulator;
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keyswitchManipulator->addMatrixManipulator( '1', "Trackball", new osgGA::TrackballManipulator() );
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keyswitchManipulator->addMatrixManipulator( '2', "Flight", new osgGA::FlightManipulator() );
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keyswitchManipulator->addMatrixManipulator( '3', "Drive", new osgGA::DriveManipulator() );
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keyswitchManipulator->addMatrixManipulator( '4', "Terrain", new osgGA::TerrainManipulator() );
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keyswitchManipulator->addMatrixManipulator( '5', "Orbit", new osgGA::OrbitManipulator() );
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keyswitchManipulator->addMatrixManipulator( '6', "FirstPerson", new osgGA::FirstPersonManipulator() );
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keyswitchManipulator->addMatrixManipulator( '7', "Spherical", new osgGA::SphericalManipulator() );
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std::string pathfile;
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double animationSpeed = 1.0;
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while(arguments.read("--speed",animationSpeed) ) {}
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char keyForAnimationPath = '8';
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while (arguments.read("-p",pathfile))
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{
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osgGA::AnimationPathManipulator* apm = new osgGA::AnimationPathManipulator(pathfile);
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if (apm || !apm->valid())
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{
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apm->setTimeScale(animationSpeed);
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unsigned int num = keyswitchManipulator->getNumMatrixManipulators();
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keyswitchManipulator->addMatrixManipulator( keyForAnimationPath, "Path", apm );
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keyswitchManipulator->selectMatrixManipulator(num);
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++keyForAnimationPath;
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}
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}
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viewer.setCameraManipulator( keyswitchManipulator.get() );
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}
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bool doArbSync = arguments.read("--sync");
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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 thread model handler
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viewer.addEventHandler(new osgViewer::ThreadingHandler);
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// add the window size toggle handler
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viewer.addEventHandler(new osgViewer::WindowSizeHandler);
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// add the stats handler
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viewer.addEventHandler(new osgViewer::StatsHandler);
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// add the help handler
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viewer.addEventHandler(new osgViewer::HelpHandler(arguments.getApplicationUsage()));
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// add the record camera path handler
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viewer.addEventHandler(new osgViewer::RecordCameraPathHandler);
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// add the LOD Scale handler
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viewer.addEventHandler(new osgViewer::LODScaleHandler);
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// add the screen capture handler
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viewer.addEventHandler(new osgViewer::ScreenCaptureHandler);
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// load the data
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osg::ref_ptr<osg::Node> loadedModel = osgDB::readNodeFiles(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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// any option left unread are converted into errors to write out later.
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arguments.reportRemainingOptionsAsUnrecognized();
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// report any errors if they have occurred when parsing the program arguments.
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if (arguments.errors())
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{
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arguments.writeErrorMessages(std::cout);
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return 1;
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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.get());
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viewer.setSceneData( loadedModel.get() );
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viewer.realize();
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if (doArbSync)
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{
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osgViewer::ViewerBase::Contexts contexts;
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viewer.getContexts(contexts);
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for(osgViewer::ViewerBase::Contexts::iterator itr = contexts.begin();
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itr != contexts.end();
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++itr)
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{
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(*itr)->setSwapCallback(new MySwapBuffersCallback);
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}
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}
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return viewer.run();
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}
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